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Proceedings Papers

Proceedings Volume Cover
ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition
June 6–10, 2011
Vancouver, British Columbia, Canada
Conference Sponsors:
  • International Gas Turbine Institute
ISBN:
978-0-7918-5466-2
Volume 6: Structures and Dynamics, Parts A and B

Structures and Dynamics

Fatigue, Fracture and Life Prediction

The Effect of Heat Generation on Low Cycle Fatigue Life Prediction
Onome Scott-Emuakpor, Tommy George, Charles Cross, Todd Letcher, John Wertz, M.-H. Herman Shen
GT 2011; 1-9https://doi.org/10.1115/GT2011-45043
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Topics: Heat , Low cycle fatigue , Fatigue , Cycles , Failure , Fatigue life , Stress , Wedges , Acoustics , Compression
Disk Crack Detection and Prognosis Using Non Contact Time of Arrival Sensors
Kam Chana, Dave Cardwell, Lauren Gray, Ben Hall
GT 2011; 11-18https://doi.org/10.1115/GT2011-45158
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Topics: Crack detection , Disks , Sensors , Engines , Fracture (Materials) , Blades , Rotors , Computer software , Eddies (Fluid dynamics) , Eddy currents (Electricity)
Advanced Experimental and Analytical Investigations on Combined Cycle Fatigue (CCF) of Conventional Cast and Single-Crystal Gas Turbine Blades
Swen Weser, Uwe Gampe, Mario Raddatz, Roland Parchem, Petr Lukas
GT 2011; 19-28https://doi.org/10.1115/GT2011-45171
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Topics: Blades , Combined cycles , Crystals , Fatigue , Gas turbines , High cycle fatigue , Design , Rotors , Testing , Aircraft engines
An Energy-Based Axial Isothermal-Mechanical Lifing Procedure
John Wertz, M.-H. Herman Shen, Onome Scott-Emuakpor, Tommy George, Charles Cross
GT 2011; 29-36https://doi.org/10.1115/GT2011-45261
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Topics: Creep , Density , Fatigue , Fatigue life , Fracture (Materials) , Fracture (Process) , Materials properties , Operating temperature , Temperature , Testing
The Influence of Crystal Orientation on the Elastic Stresses of a Single Crystal Nickel-Based Turbine Blade
Michael W. R. Savage
GT 2011; 37-46https://doi.org/10.1115/GT2011-45309
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Topics: Crystal structure , Crystals , Nickel , Stress , Turbine blades , Blades , Fatigue , Casting , Finite element analysis , Geometry
Remaining Life Assessment Technology Applied to Steam Turbines and Hot Gas Expanders
Phillip Dowson, David Dowson
GT 2011; 47-61https://doi.org/10.1115/GT2011-45324
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Topics: Remaining life assessment , Steam turbines , Creep , Life extension , Fatigue , Fatigue life , Machinery , Computer software , Damage , Design
Method to Evaluate Service Boundary Conditions for Gas Turbine Stator Structure by Using Inverse Analysis
Y. Hayasaka, M. Sekihara
GT 2011; 63-68https://doi.org/10.1115/GT2011-45341
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Topics: Boundary-value problems , Gas turbines , Stators , Finite element analysis , Clearances (Engineering) , Experimental design , Metals , Micro gas turbines , Temperature , Turbines
A Residual Stress Measurement Technique for Turbine Blade Dovetails
Takero Kawamura, Masanobu Baba, Naoto Ozawa, Yukihisa Sugiyama
GT 2011; 69-76https://doi.org/10.1115/GT2011-45352
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Topics: Stress , Turbine blades , Residual stresses , Blades , Grain size , X-ray diffraction , Alloys , Finite element analysis , Industrial gases , Investment castings
An Energy Based Critical Fatigue Life Prediction Method
Todd Letcher, M.-H. Herman Shen, Onome Scott-Emuakpor, Tommy George, Charles Cross
GT 2011; 77-84https://doi.org/10.1115/GT2011-45443
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Topics: Fatigue life , Density , Fatigue , Fracture (Materials) , Fracture (Process) , Cycles , ASTM International , Failure , Stress , Stress-strain curves
Limits on Morrow Mean Stress Correction of Manson-Coffin Life Prediction Models
W. David Day
GT 2011; 85-92https://doi.org/10.1115/GT2011-45444
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Topics: Stress , Low cycle fatigue , Accounting , Bolted joints , Databases , Design , Fracture (Materials) , High cycle fatigue , Plasticity , Risk
Lifing Requirement Based Turbine Airfoil Mass Estimation Method in Conceptual Aero-Engine Design
Stefan Bretschneider, Hermann Klingels, Fabian Donus, Meinrad Weisser
GT 2011; 93-102https://doi.org/10.1115/GT2011-45613
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Topics: Aircraft engines , Airfoils , Design , Turbines , Temperature , Stress , Cooling , Turbine blades , Cascades (Fluid dynamics) , Conceptual design
Fatigue-Life Prediction Method Based on Small-Crack Theory in an Engine Material
James C. Newman, Jr., Balkrishna S. Annigeri
GT 2011; 103-112https://doi.org/10.1115/GT2011-45644
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Topics: Engines , Fatigue life , Fracture (Materials) , Fatigue , Stress , High cycle fatigue , Air Force , Alloys , Fatigue cracks , Fatigue testing
Development of State of the Art Dynamic Stress Prediction Methodology for Steam Turbines
Tie Chen, John Rogerson, Fang Yang, Gurnam Singh, Phil Hemsley
GT 2011; 113-120https://doi.org/10.1115/GT2011-45797
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Topics: Steam turbines , Stress , Blades , Damping , Friction , Springs , Computational fluid dynamics , Degrees of freedom , Design , Flow (Dynamics)
Experimental Validation of Empirical Methods for Dynamic Stress Prediction in Turbomachinery Blades
Timothy C. Allison, Andrew H. Lerche, J. Jeffrey Moore
GT 2011; 121-131https://doi.org/10.1115/GT2011-45901
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Topics: Blades , Stress , Turbomachinery , Damping , Boundary-value problems , Compressor impellers , Dynamic response , Errors , Fatigue life , Finite element model
Life Assessment by Fracture Mechanics Analysis and Damage Monitoring Technique on Combustion Liners
A. Can Altunlu, Peter van der Hoogt, Andre´ de Boer
GT 2011; 133-143https://doi.org/10.1115/GT2011-46107
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Topics: Combustion , Damage , Fracture mechanics , Vibration , Combustion chambers , Stress , Structural health monitoring , Acoustics , Dynamics (Mechanics) , Fracture (Materials)
Effects of Thermal Transients on Cracked Shaft Vibrations
A. Vania, P. Pennacchi, S. Chatterton
GT 2011; 145-152https://doi.org/10.1115/GT2011-46181
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Topics: Transients (Dynamics) , Vibration , Fracture (Materials) , Rotors , Machinery , Separation (Technology) , Steam turbines , Stiffness , Stress , Weight (Mass)
Coupling Failure for Torsional Fatigue: A Multi-Disciplinary Root Cause Analysis Approach
Valerio Rossi, Marco Romanelli, Lorenzo Naldi, Luca Antonelli, Marco Manetti, Roberto Paolanti
GT 2011; 153-162https://doi.org/10.1115/GT2011-46193
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Topics: Failure , Fatigue , Root cause analysis , Corrective actions , Dynamic analysis , Engineering disciplines , Environmental health and safety , Fatigue testing , Finite element analysis , Fractography
Fatigue Reliability Predictions for Crack Bridging Materials
S. Gallops, Jamie J. Kruzic
GT 2011; 163-167https://doi.org/10.1115/GT2011-46222
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Topics: Fatigue , Fracture (Materials) , Reliability , Stress , Surface cracks , Cycles , Fatigue cracks , Fluorescence spectroscopy , Fracture mechanics , Materials properties
A New Hex-8 Finite Element for Gas Turbine Engine Fatigue Life Prediction
Wasim Tarar, M.-H. Herman Shen
GT 2011; 169-179https://doi.org/10.1115/GT2011-46389
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Topics: Fatigue life , Finite element analysis , Gas turbines , Fatigue , Cycles , Failure , Bricks , Constitutive equations , Stress , Finite element methods
Anisotropic Creep Damage and Elastic Damage of Notched Directionally Solidified Materials
Calvin M. Stewart, Ali P. Gordon
GT 2011; 181-188https://doi.org/10.1115/GT2011-46476
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Topics: Anisotropy , Creep , Damage , Fracture (Materials)
Failure Investigation of 1st Stage Buckets From Frame 3002, 10 MW Gas Turbine Unit
Girish M. Shejale, David Ross
GT 2011; 189-198https://doi.org/10.1115/GT2011-46863
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Topics: Embrittlement , Failure , Gas turbines , Heat treating (Metalworking)

Rotordynamics

Analytical Investigation of the Effects of Induction Motor Transients on Compressor Drive Shafts
Anand Srinivasan
GT 2011; 199-206https://doi.org/10.1115/GT2011-45033
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Topics: Compressors , Electromagnetic induction , Motors , Transients (Dynamics) , Torque , Trains , Circuits , Damage , Electronic systems , Simulation
Dry-Friction Whip and Whirl Predictions for a Rotor-Stator Model With Rubbing Contact at Two Locations
Dara W. Childs, Dhruv Kumar
GT 2011; 207-218https://doi.org/10.1115/GT2011-45081
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Topics: Dry-friction whip and whirl , Rotors , Stators , Whirls , Simulation , Dry friction , Engineering simulation , Bearings , Bushings , Center of mass
On Occurrence of Reverse Full Annular Rub
John J. Yu
GT 2011; 219-227https://doi.org/10.1115/GT2011-45153
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Topics: Damping , Degrees of freedom , Dry friction , Friction , Machinery , Polynomials , Rotors , Whirls
Extensions of Campbell’s Major Resonance With an Experimental Demonstration for a Counter-Rotating Turbine
Robert P. Czachor
GT 2011; 229-236https://doi.org/10.1115/GT2011-45165
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Topics: Resonance , Turbines , Rotors , Excitation , Stators , Traveling waves , Wave propagation
Measured Static and Rotordynamic Coefficient Results for a Rocker-Pivot, Tilting-Pad Bearing With 50 and 60% Offsets
Chris D. Kulhanek, Dara W. Childs
GT 2011; 237-246https://doi.org/10.1115/GT2011-45209
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Topics: Bearings , Stiffness , Stress , Damping , Clearances (Engineering) , Dynamic testing (Engineering) , Excitation , Journal bearings , Lubrication
Friction Factor Behavior From Flat-Plate Tests of 12.15 mm Diameter Hole-Pattern Roughened Surfaces
Thanesh Deva Asirvatham, Dara W. Childs, Stephen Phillips
GT 2011; 247-255https://doi.org/10.1115/GT2011-45213
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Topics: Flat plates , Friction , Testing
Case Study of Morton Effect Shaft Differential Heating in a Variable-Speed Rotating Electric Machine
Joshua A. Lorenz, Brian T. Murphy
GT 2011; 257-269https://doi.org/10.1115/GT2011-45228
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Topics: Heating , Machinery , Bearings , Vibration , Hardware , Journal bearings , Plain bearings , Rotors , Switches
A New, Iterative, Synchronous-Response Algorithm for Analyzing the Morton Effect
Dara W. Childs, Rohit Saha
GT 2011; 271-281https://doi.org/10.1115/GT2011-45266
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Topics: Algorithms , Bearings , Rotors , Temperature distribution , Clearances (Engineering) , Excitation , Lubricants , Stability , Viscosity , Fluid films
Improving Rotordynamic Performance of an Axial Flow Compressor With Two-Lobe Bearings Using Nonlinear Constraint Parameter Optimization
Henning Ressing, Sebastian Kukla
GT 2011; 283-289https://doi.org/10.1115/GT2011-45311
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Topics: Axial flow , Bearings , Optimization , Rotors , Design , Rotordynamics , Compressors , Machinery , Turbochargers , American Petroleum Institute
Construction of Shock Response Map for a Flexible Rotor-Bearing System With Mount System to Base Excitations Using the FE Transient Analysis Method
An Sung Lee, Byung Ok Kim
GT 2011; 291-298https://doi.org/10.1115/GT2011-45339
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Topics: Bearings , Construction , Excitation , Rotors , Shock (Mechanics) , Transient analysis , Design , Transients (Dynamics) , Turbines , Damping
Imbalance Response of a Rotor Supported by Hybrid Air Foil Bearings
Daejong Kim, Prajwal Shetty, Donghyun Lee
GT 2011; 299-305https://doi.org/10.1115/GT2011-45576
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Topics: Foil bearings , Rotors , Pressure , Stability , Vibration , Bearings , Construction , Damping , Drag (Fluid dynamics) , Friction
Interval Analysis Method for Rotordynamic With Uncertain Parameters
Yanhong Ma, Peng Cao, Jun Wang, Meng Chen, Jie Hong
GT 2011; 307-314https://doi.org/10.1115/GT2011-45597
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Topics: Manufacturing , Mathematics , Probability , Rotordynamics , Rotors , Statistics , Stiffness , Temperature , Turbofans
Rotating Machine Critical Speed Suppressing by Using Electromagnetic Actuators
Johan Der Hagopian, Jarir Mahfoud
GT 2011; 315-319https://doi.org/10.1115/GT2011-45598
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Topics: Electromagnetic actuators , Machinery , Ball bearings , Bearings , Resonance , Roller bearings
Numerical and Experimental Research on Periodic Solution Stability of Inclined Rotor Journal Bearing System
Dashuai Qian, Zhansheng Liu, Jiajia Yan, Liquan Sun, Yongliang Wang
GT 2011; 321-330https://doi.org/10.1115/GT2011-45632
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Topics: Journal bearings , Rotors , Stability , Bearings , Ships , Bifurcation , Finite element methods , Lubricants , Stress , Waves
Stability of Centrifugal Compressors by Applications of Damper Seals
Edmund A. Memmott
GT 2011; 331-342https://doi.org/10.1115/GT2011-45634
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Topics: Compressors , Dampers , Stability , Pistons , Pressure , Rotordynamics , Sealing (Process) , Stators , Stress , Vibration
On the Nonlinear Dynamics of Rotor-Foil Bearing Systems: Effects of Shaft Acceleration, Mass Imbalance and Bearing Mechanical Energy Dissipation
Luis San Andre´s, Keun Ryu
GT 2011; 343-353https://doi.org/10.1115/GT2011-45763
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Topics: Bearings , Energy dissipation , Nonlinear dynamics , Rotors , Whirls , Construction , Cycles , Damping , Delays , Design
Reduced Modelling for Turbine Rotor-Blade Coupled Bending Vibration Analysis
Akira Okabe, Takeshi Kudo, Koki Shiohata, Osami Matsushita, Hiroyuki Fujiwara, Hideo Yoda, Shigeo Sakurai
GT 2011; 355-364https://doi.org/10.1115/GT2011-45776
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Topics: Blades , Modeling , Rotors , Turbines , Vibration analysis , Vibration , Cantilevers , Design , Displacement , Eigenvalues
Rotor Dynamic Analysis of Tie-Bolt Fastened Rotor Based on Elastic-Plastic Contact
He Peng, Zhansheng Liu, Guilong Wang, Min Zhang
GT 2011; 365-373https://doi.org/10.1115/GT2011-45796
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Topics: Dynamic analysis , Rotors , Tie rods , Stiffness , Disks , Stress , Equations of motion , Finite element methods , Rods , Surface roughness
Rotordynamic Evaluation of Centrifugal Compressor Using Electromagnetic Exciter
Naohiko Takahashi, Yohei Magara, Mitsuhiro Narita, Haruo Miura
GT 2011; 375-382https://doi.org/10.1115/GT2011-45829
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Topics: Compressors , Excitation systems , Stability , Excitation , Rotors , Frequency response , High pressure (Physics) , Bearings , Damping , Whirls
Analysis of the Effects of Parallel and Angular Misalignment in Hyperstatic Rotors Equipped With Oil-Film Bearings
P. Pennacchi, A. Vania, S. Chatterton
GT 2011; 383-390https://doi.org/10.1115/GT2011-45903
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Topics: Bearings , Rotors , Stress , Machinery , Couplings , Damping , Dimensions , Finite element model , Flanges , Rotation
Modeling of the Dynamic Response of a Pelton Turbine Hydroelectric Plant
P. Pennacchi, S. Chatterton, A. Vania
GT 2011; 391-398https://doi.org/10.1115/GT2011-45907
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Topics: Dynamic response , Hydropower , Modeling , Turbines , Nozzles , Control equipment , Dynamics (Mechanics) , Governors , Needles , Water
Electronic Torsional Vibration Elimination for Synchronous Motor Driven Turbomachinery
Christof Sihler, Simon Schramm, Valerio Rossi, Andrea Lenzi, Valerio Depau
GT 2011; 399-408https://doi.org/10.1115/GT2011-46005
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Topics: Engines , Motors , Turbomachinery , Vibration , Trains , Electric propulsion , Electronics , Liquefied natural gas , Torque , Compression
Rotor Dynamics Analysis and Testing of a Turbomolecular Pump Rotor-Bearing System
Chih-Neng Hsu, Hsiao-Wei D. Chiang, Yu-Meng Huang, Ying-Chia Fu, Kuo-Hsun Hsu, Chao-Huan Li
GT 2011; 409-416https://doi.org/10.1115/GT2011-46159
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Topics: Bearings , Pumps , Rotordynamics , Rotors , Testing , Vacuum pumps , Vibration
Effects of the Shaft Normal Modes on the Model-Based Identification of Unbalances in Rotating Machines
A. Vania, P. Pennacchi, S. Chatterton
GT 2011; 417-424https://doi.org/10.1115/GT2011-46184
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Topics: Machinery , Vibration , Excitation
Numerical and Experimental Investigation on the Controlling for Rotor-to-Stationary Part Rubbing in Rotating Machinery
Weimin Wang, Jinji Gao, Ya Zhang, Jianfei Yao
GT 2011; 425-434https://doi.org/10.1115/GT2011-46250
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Topics: Machinery , Rotors , Vibration , Dynamic response , Failure , Steam turbines
Dynamic Characteristic Analysis of a Rotor-Bearing System Using Global Assumed Mode Method With Different Polynomial Function
T. N. Shiau, J. R. Chang, C. H. Kang, C. Y. Liao
GT 2011; 435-443https://doi.org/10.1115/GT2011-46293
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Topics: Bearings , Finite element methods , Polynomials , Rotors
Parametric Study of Bump Foil Gas Bearings for Industrial Applications
Oscar De Santiago, Luis San Andres
GT 2011; 445-456https://doi.org/10.1115/GT2011-46767
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Topics: Gas bearings , Bearings , Foil bearings , Compressors , Aircraft , Calibration , Design , Flow (Dynamics) , Fluid dynamics , Fluids
Stability of Flexible Rotors With a LeBlanc Balancer
Leonardo Urbiola-Soto, Marcelo Lopez-Parra
GT 2011; 457-464https://doi.org/10.1115/GT2011-46848
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Topics: Rotors , Stability , Damping , Cavities , Dynamic response , Fluids , Internal friction , Particulate matter , Traveling waves

Bearing and Seal Dynamics

Metal Mesh Foil Bearing: Effect of Motion Amplitude, Rotor Speed, Static Load, and Excitation Frequency on Force Coefficients
Luis San Andre´s, Thomas Abraham Chirathadam
GT 2011; 465-476https://doi.org/10.1115/GT2011-45257
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Topics: Excitation , Foil bearings , Metals , Rotors , Stress , Bearings , Damping , Rotation , Energy dissipation , Spin (Aerodynamics)
Rotordynamic Force Coefficients of Bubbly Mixture Annular Pressure Seals
Luis San Andre´s
GT 2011; 477-486https://doi.org/10.1115/GT2011-45264
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Topics: Compression , Dampers , Damping , Design , Excitation , Flow (Dynamics) , Fluids , Hardening , Leakage , Liquid mixtures
Prediction of Axial Thrust Load Acting on a Cryogenic Liquid Turbine Impeller
Ke Wang, Jinju Sun, Zhilong He, Peng Song
GT 2011; 487-498https://doi.org/10.1115/GT2011-45273
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Topics: Impellers , Stress , Thrust , Turbines , Flow (Dynamics) , Pressure , Clearances (Engineering) , Computer simulation , Geometry , Bearing design
A Novel Bulk-Flow Model for Improved Predictions of Force Coefficients in Grooved Oil Seals Operating Eccentrically
Luis San Andre´s, Adolfo Delgado
GT 2011; 499-509https://doi.org/10.1115/GT2011-45274
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Topics: Flow (Dynamics) , Pressure , Bearings , Clearances (Engineering) , Compressors , Film flow , Finite element methods , Fluids , Hydrodynamic stability , Inertia (Mechanics)
Rotordynamic Force Coefficients for Three Types of Annular Gas Seals With Inlet Preswirl and High Differential Pressure Ratio
Bugra H. Ertas, Adolfo Delgado, Giuseppe Vannini
GT 2011; 511-522https://doi.org/10.1115/GT2011-45556
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Topics: Pressure , Damping , Excitation , Rotors , Testing , Cavities , Clearances (Engineering) , Compressors , Dampers , Deflection
Analytical Forces Parameters Identification of Hybrid Journal Gas Bearing Based on Transfer Function
Guang-hui Zhang, Zhan-sheng Liu, Gui-long Wang, Jia-jia Yan
GT 2011; 523-535https://doi.org/10.1115/GT2011-45788
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Topics: Gas bearings , Transfer functions , Bearings , Journal bearings , Orifices , Design , Flow (Dynamics) , Laplace transforms , Pressure , Rotors
An Investigation Into Two Alternative Approaches for the Identification of SFD Bearings for Aeroengine Analysis
Keir Groves, Philip Bonello
GT 2011; 537-547https://doi.org/10.1115/GT2011-45818
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Topics: Bearings , Computer simulation , Artificial neural networks , Rotors , Simulation , Cavitation , Compressibility , Computation , Design , Engines
Temporal and Convective Inertia Effects in Plain Journal Bearings With Eccentricity, Velocity and Acceleration
Saeid Dousti, Jianming Cao, Amir Younan, Paul Allaire, Tim Dimond
GT 2011; 549-558https://doi.org/10.1115/GT2011-45880
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Topics: Inertia (Mechanics) , Journal bearings , Bearings , Reynolds number , Turbulence , Viscosity , Fluid films , Lubricants , Rotors , Stress
Experimental Investigation of Turbocharger Rotor Bearing System
Ankur Ashtekar, Farshid Sadeghi, Garry Powers, Kevin Mantel, Robert Griffith
GT 2011; 559-566https://doi.org/10.1115/GT2011-45999
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Topics: Bearings , Rotors , Turbochargers , Ball bearings , Temperature sensors , Turbines , Wheels , Accelerometers , Design , Dynamic response
Hydrodynamic Analysis of Compliant Foil Bearings With Modified Top Foil Model
Fangcheng Xu, Zhansheng Liu, Guanghui Zhang, Liang Xie
GT 2011; 567-576https://doi.org/10.1115/GT2011-46018
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Topics: Compressibility , Deformation , Dimensions , Film thickness , Finite difference methods , Finite element analysis , Foil bearings , Gas bearings , Modeling , Newton's method
Analytic Modelling of Floating Ring Annular Seals
Mihai Arghir, Manh-Hung Nguyen, David Tonon, Je´roˆme Dehouve
GT 2011; 577-586https://doi.org/10.1115/GT2011-46047
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Topics: Clearances (Engineering) , Damage , Friction , Heating , Inertia (Mechanics) , Leakage , Leakage flows , Modeling , Pressing , Pressure
Experimental Analysis of Dynamic Characteristics of a Hybrid Aerostatic Bearing
Laurent Rudloff, Mihai Arghir, Olivier Bonneau, Sebastien Guingo, Guillaume Chemla, Emelyne Renard
GT 2011; 587-595https://doi.org/10.1115/GT2011-46048
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Topics: Bearings , Experimental analysis , Rotors , Equations of motion , Rotation , Stress , Hammers , Impulse (Physics) , Turbines , Degrees of freedom
Comparison Between a CFD Code and a Three-Control-Volume Model for Labyrinth Seal Flutter Predictions
R. Phibel, L. di Mare
GT 2011; 597-606https://doi.org/10.1115/GT2011-46281
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Topics: Computational fluid dynamics , Flutter (Aerodynamics) , Stability , Flow (Dynamics) , Leakage , Aircraft engines , Design , Design methodology , Rotordynamics , Turbines
Numerical Simulation and Full Scale Landing Test of a 12.5MW Vertical Motorcompressor Levitated by Active Magnetic Bearings
Andrea Masala, Giuseppe Vannini, David Ransom, Jeff Moore, Luc Baudelocque
GT 2011; 607-613https://doi.org/10.1115/GT2011-46411
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Topics: Computer simulation , Magnetic bearings , Bearings , Rotors , Dynamics (Mechanics) , Compressors , Engineering prototypes , Machinery , Stators , Stress
Stability Analysis of an Industrial Gas Compressor Supported by Tilting-Pad Bearings Under Different Lubrication Regimes
Alejandro Cerda Varela, Ilmar Ferreira Santos
GT 2011; 615-629https://doi.org/10.1115/GT2011-46450
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Topics: Bearings , Compressors , Industrial gases , Lubrication , Stability , Rotors , Journal bearings , Modeling , Thermohydrodynamics
Application of an Efficient Pressure-Temperature Coupled Solver to Industrial Hydrodynamic Bearings in Conjunction With Multi-Objective Evolutionary Optimization
V. Indriolo, G. Melina, G. Ottino, G. Romanelli, S. Minniti, F. Rindone
GT 2011; 631-641https://doi.org/10.1115/GT2011-46461
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Topics: Bearings , Optimization , Pressure , Temperature , Energy dissipation , Flow (Dynamics) , Absorption , Bearing design , Computational fluid dynamics , Energy budget (Physics)
Rotordynamic Performance of an Oil-Free Turbo Blower Focusing on Load Capacity of Gas Foil Thrust Bearings
Tae Ho Kim, Yong-Bok Lee, Tae Young Kim, Kyong Ho Jeong
GT 2011; 643-650https://doi.org/10.1115/GT2011-46471
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Topics: Stress , Thrust bearings , Turbochargers , Rotors , Design , Stability , Bearings , Turbomachinery , Compressed air , Finite element analysis
Thermal Performance of a Bump Type Gas Foil Bearing Floating on a Hollow Shaft for Increasing Rotating Speed and Static Load
Kyuho Sim, Jin Woo Song, Yong-Bok Lee, Tae Ho Kim
GT 2011; 651-662https://doi.org/10.1115/GT2011-46499
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Topics: Foil bearings , Stress , Temperature , Ball bearings , Bearings , Temperature gradient , Wire , Electric motors , Heat , Materials properties
Measured and Predicted Transfer Functions Between Rotor Motion and Pad Motion for a Rocker-Back Tilting-Pad Bearing in LOP Configuration
Jason C. Wilkes
GT 2011; 663-674https://doi.org/10.1115/GT2011-46510
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Topics: Bearings , Rotors , Transfer functions , Damping , Stress , Excitation , Stiffness , Accounting , Deformation , Degrees of freedom
Effects of Mesh Density on Static Load Performance of Metal Mesh Gas Foil Bearings
Yong-Bok Lee, Chang Ho Kim, Tae Ho Kim, Tae Young Kim
GT 2011; 675-683https://doi.org/10.1115/GT2011-46589
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Topics: Density , Foil bearings , Metals , Stress , Rotors , Damping , Deflection , Bearings , Stiffness , Spin (Aerodynamics)
Comparison of the Steady-State and Dynamic Performance of Two Fixed-Geometry Journal Bearings
Martin J. Conlon, Azzedine Dadouche, Waldemar M. Dmochowski
GT 2011; 685-694https://doi.org/10.1115/GT2011-46761
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Topics: Geometry , Journal bearings , Steady state , Bearings , Stability , Dampers , Displacement , Excitation , Frequency-domain analysis , Operating temperature
Effect of Surface Texturing on the Steady-State Properties and Dynamic Coefficients of a Plain Journal Bearing: Experimental Study
Azzedine Dadouche, Martin J. Conlon, Waldemar Dmochowski, Waldemar Koszela, Lidia Galda, Pawel Pawlus
GT 2011; 695-704https://doi.org/10.1115/GT2011-46804
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Topics: Journal bearings , Steady state , Bearings , Density , Embossing , Lasers , Shapes , Stress , Tribology

Probabilistic Methods

Probabilistic High-Cycle Fatigue Risk Assessment of an Integrally Bladed Rotor
Benjamin D. Hall, Lauren Gray
GT 2011; 705-714https://doi.org/10.1115/GT2011-45151
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Topics: High cycle fatigue , Risk assessment , Rotors , Blades , Engines , Risk , Simulation , Statistical distributions , Uncertainty , Chain
Probabilistic Analysis of Gas Turbine Disk Multi-Crack Propagation
Wei Cui, Jianjun Wang
GT 2011; 715-721https://doi.org/10.1115/GT2011-45439
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Topics: Disks , Fracture (Materials) , Gas turbines , Surface cracks , Turbines , Aircraft engines , Chaos , Computer simulation , Cycles , Damage
Impact of Manufacturing Variability and Non-Axisymmetry on High-Pressure Compressor Stage Performance
Alexander Lange, Matthias Voigt, Konrad Vogeler, Henner Schrapp, Erik Johann, Volker Gu¨mmer
GT 2011; 723-731https://doi.org/10.1115/GT2011-45718
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Topics: Compressors , High pressure (Physics) , Manufacturing , Blades , Simulation , Computational fluid dynamics , Computer simulation , Cross section (Physics) , Rotors
Probabilistic Life Assessment of Turbine Vanes
Alexander N. Arkhipov, Yevgeny E. Krasnovskiy, Igor V. Putchkov
GT 2011; 733-740https://doi.org/10.1115/GT2011-45841
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Topics: Base metals , Boundary-value problems , Coating processes , Coatings , Compressors , Creep , Electromagnetic scattering , Engines , Failure , Fatigue
Characterization of the As Manufactured Variability in a CVI SiC/SiC Woven Composite
Peter J. Bonacuse, Subodh Mital, Robert Goldberg
GT 2011; 741-746https://doi.org/10.1115/GT2011-45890
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Topics: Ceramic matrix composites , Composite materials , Cracking (Materials) , Cross section (Physics) , Durability , Equipment performance , Fibers , Fracture (Process) , NASA , Polishing
Challenges in Uncertainty, Calibration, Validation and Predictability of Engineering Analysis Models
Liping Wang, Xingjie Fang, Arun Subramaniyan, Giridhar Jothiprasad, Martha Gardner, Amit Kale, Srikanth Akkaram, Don Beeson, Gene Wiggs, John Nelson
GT 2011; 747-758https://doi.org/10.1115/GT2011-46554
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Topics: Calibration , Uncertainty , Uncertainty quantification , Governments , Thrust
A Comparative Study on Accuracy and Efficiency of Metamodels for Large Industrial Datasets
Arun K. Subramaniyan, Liping Wang, Don Beeson, John Nelson, Richard Berg, Randall Cepress
GT 2011; 759-769https://doi.org/10.1115/GT2011-46610
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Topics: Aircraft engines , Artificial neural networks , Gas turbines
Estimating the Probabilistic Size and Shape Distributions of 3D Anomalies From Sectioning Measurements Using the Stereological Unfolding Approach
Wuwei Liang, Michael P. Enright
GT 2011; 771-779https://doi.org/10.1115/GT2011-46653
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Topics: Shapes , Algorithms , Dimensions , Disks , Indium alloys , Probabilistic risk assessment , Rotors
Probabilistic High-Cycle Fretting Fatigue Assessment of Gas Turbine Engine Components
Kwai S. Chan, Michael P. Enright, Patrick J. Golden, Samir Naboulsi, Ramesh Chandra, Alan C. Pentz
GT 2011; 781-789https://doi.org/10.1115/GT2011-46686
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Topics: Cycles , Fatigue , Gas turbines , High cycle fatigue , Disks , Engines , Resonance , Risk , Blades , Damage

Engineering and Diverse Topics

Process Integration and Automated Numerical Design Optimization of an Eigenfrequency Analysis of a Compressor Blade
Philipp Hecker, Damir Delimar, Herbert Brandl, Michael Lo¨tzerich
GT 2011; 791-800https://doi.org/10.1115/GT2011-45489
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Topics: Blades , Compressors , Design , Optimization , Airfoils , Finite element analysis , Finite element model , Gas turbines , Mode shapes , Approximation
The Architecture and Application of Preliminary Design Systems
Fabian Donus, Stefan Bretschneider, Reinhold Schaber, Stephan Staudacher
GT 2011; 801-810https://doi.org/10.1115/GT2011-45614
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Topics: Design , Engineering disciplines , Engines , Aircraft engines , Conceptual design , Cycles , Engine design , Aerodynamics , Algorithms , Boundary-value problems
Concept Optimal Design of Composite Fan Blades
J. S. Rao, Kiran Sheelavant, Balasaheb Bombale
GT 2011; 811-820https://doi.org/10.1115/GT2011-45994
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Topics: Blades , Composite materials , Design , Optimization , Weight (Mass) , Carbon fibers , Engines , Gages , Titanium , Topology
Experimental Characterization of Synchronous Vibrations of Blades
Juan C. Jauregui, Mihir Sen, Carlos S. Lopez-Cajun
GT 2011; 821-828https://doi.org/10.1115/GT2011-46105
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Topics: Blades , Experimental characterization , Vibration , Synchronization , Rotors , Accelerometers , Air flow , Errors , Excitation , Manufacturing
Effect of Non-Uniform Blade Root Friction and Sticking on Disk Stresses
Harold R. Simmons, Vishwas Iyengar
GT 2011; 829-838https://doi.org/10.1115/GT2011-46689
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Topics: Blades , Disks , Friction , Stress , Creep , Fatigue damage , Turbines , Bending (Stress) , Compressors , Damage
Inlet Guide Vane Failure: Aero-Mechanical and System Control Interaction Effect
Loc Q. Duong, Charlene X. Hu, Nagamany Thayalakhandan
GT 2011; 839-845https://doi.org/10.1115/GT2011-46742
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Topics: Failure , Inlet guide vanes , Actuators , Failure mechanisms , Air flow , Aircraft , Compressors , Contamination , Corrosion , Cracking (Materials)

Damping Technologies

Eddy Current Damper for Turbine Blading: Electromagnetic Finite Element Analysis and Measurement Results
Jacob Laborenz, Malte Krack, Lars Panning, Jo¨rg Wallaschek, Markus Denk, Pierre-Alain Masserey
GT 2011; 847-858https://doi.org/10.1115/GT2011-45242
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Topics: Dampers , Eddies (Fluid dynamics) , Eddy currents (Electricity) , Finite element analysis , Turbines , Damping , Dynamics (Mechanics) , Engineering simulation , Finite element model , Flutter (Aerodynamics)
Multi-Body Damping of a Vane Cluster
Andreas Hartung, Ulrich Retze
GT 2011; 859-865https://doi.org/10.1115/GT2011-45666
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Topics: Damping , Dampers , Geometry , Springs , Blades , Finite element model , Separation (Technology) , Simulation , Vibration
Effects of Contact Interface Parameters on Vibration of Turbine Bladed Disks With Underplatform Dampers
C. W. Schwingshackl, E. P. Petrov, D. J. Ewins
GT 2011; 867-876https://doi.org/10.1115/GT2011-45699
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Topics: Dampers , Disks , Turbines , Vibration , Blades , Friction , Modeling , Computer software , Damping , Design
Theoretical and Experimental Investigation on Nonlinear Characterization of Metal Rubber
Jie Hong, Bin Zhu, Yanhong Ma
GT 2011; 877-886https://doi.org/10.1115/GT2011-45772
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Topics: Metals , Rubber , Damping , Stiffness , Wire , Blades , Compression , Coulombs , Design , Friction
Dynamic Characteristics of Dry Friction Damping at Bladed Disk Joints: Experiments
Jie Hong, Lulu Chen, Yanhong Ma, Dayi Zhang
GT 2011; 887-896https://doi.org/10.1115/GT2011-45965
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Topics: Damping , Disks , Dry friction , Stress , Blades , Dynamic response , Excitation , Resonance
Analysis of Flutter-Induced Limit Cycle Oscillations in Gas-Turbine Structures With Friction, Gap and Other Nonlinear Contact Interfaces
E. P. Petrov
GT 2011; 897-911https://doi.org/10.1115/GT2011-46188
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Topics: Flutter (Aerodynamics) , Friction , Gas turbines , Limit cycles , Oscillations , Vibration , Disks , Finite element model
Dual Time Stepping Algorithms With the High Order Harmonic Balance Method for Contact Interfaces With Fretting-Wear
Loi¨c Salles, Laurent Blanc, Fabrice Thouverez, Alexander M. Gouskov, Pierrick Jean
GT 2011; 913-921https://doi.org/10.1115/GT2011-46488
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Topics: Algorithms , Wear , Dry friction , Computational fluid dynamics , Damping , Disks , Frequency response , Nonlinear systems , Steady state , Turbomachinery
Control of Fan Blade Vibrations Using Piezoelectrics and Bi-Directional Telemetry
Andrew J. Provenza, Carlos R. Morrison
GT 2011; 923-930https://doi.org/10.1115/GT2011-46714
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Topics: Blades , Telemetry , Vibration , Particle spin , Resonance , Rotation , Signals , Spin (Aerodynamics) , Alternating current (Electricity) , Electromagnetic induction

Structural Mechanics and Vibration

Study on Vibration Characteristics of Single Crystal Blade and Directionally Solidified Blade
Yasutomo Kaneko
GT 2011; 931-940https://doi.org/10.1115/GT2011-45032
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Topics: Blades , Crystals , Vibration , Anisotropy , Materials properties , Alloys , Design , Finite element analysis , Vibration analysis , Casting
Influence of Abradable Coating Wear Mechanical Properties on Rotor Stator Interaction
Alain Batailly, Mathias Legrand, Christophe Pierre
GT 2011; 941-950https://doi.org/10.1115/GT2011-45189
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Topics: Coatings , Mechanical properties , Rotors , Stators , Wear , Blades , Engineering simulation , Simulation , Aircraft engines , Clearances (Engineering)
Controlled Fan Blade Tip/Shroud Rubs at Engine Conditions
Corso Padova, Michael Dunn, Jeffrey Barton, Kevin Turner, Tod Steen
GT 2011; 951-961https://doi.org/10.1115/GT2011-45223
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Topics: Blades , Engines , Design , Particle spin , Rotation , Spin (Aerodynamics) , Hardware , Titanium alloys , Containment , Databases
Frequency Clustering in Cyclic Symmetric Rotors Considering Geometry Nonlinearity
Jen-Yuan James Chang, Jeffrey M. Brown, Charles J. Cross
GT 2011; 963-969https://doi.org/10.1115/GT2011-45279
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Topics: Geometry , Rotors , Blades , Design , Disks , Eigenvalues , Inertia (Mechanics) , Automobiles , Engines , Finite element analysis
Experimental and Numerical Analyses of Radial Turbine Blisks With Regard to Mistuning
Peter Ho¨nisch, Arnold Ku¨hhorn, Bernd Beirow
GT 2011; 971-980https://doi.org/10.1115/GT2011-45359
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Topics: Numerical analysis , Turbines , Blades , Computer simulation , Damping , Dynamics (Mechanics) , Excitation , Experimental analysis , Finite element model , Frequency response
Reduced Order Model of a Bladed Rotor With Geometric Mistuning: Comparison Between Modified Modal Domain Analysis and Frequency Mistuning Approach
Yasharth Bhartiya, Alok Sinha
GT 2011; 981-992https://doi.org/10.1115/GT2011-45391
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Topics: Blades , Degrees of freedom , Mode shapes , Rotors , Stiffness , Young's modulus
Investigation of Coriolis Effect on Vibration Characteristics of a Realistic Mistuned Bladed Disk
Jianqiang Xin, Jianjun Wang
GT 2011; 993-1005https://doi.org/10.1115/GT2011-45453
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Topics: Coriolis force , Disks , Vibration , Finite element methods , Blades , Centrifugal force , Damping , Rotation , Stiffness
Simulation of Blade Casing Interaction Phenomena in Gas Turbines Resulting From Heavy Tip Rubs Using an Implicit Time Marching Method
Robin J. Williams
GT 2011; 1007-1016https://doi.org/10.1115/GT2011-45495
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Topics: Blades , Gas turbines , Simulation , Wear , Linings (Textiles) , Modeling , Vibration , Design , Engines
Dynamic Loading on Turbofan Blades due to Bird-Strike
Sunil K. Sinha, Kevin E. Turner, Nitesh Jain
GT 2011; 1017-1031https://doi.org/10.1115/GT2011-45572
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Topics: Blades , Dynamic testing (Materials) , Turbofans , Stress , Airfoils , Dynamics (Mechanics) , Engines , Physics , Projectiles , Shapes
Reduced Order Models for Blade-to-Blade Damping Variability in Mistuned Blisks
Anish G. S. Joshi, Bogdan I. Epureanu
GT 2011; 1033-1045https://doi.org/10.1115/GT2011-45661
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Topics: Blades , Damping , Modeling , Energy dissipation , Coordinate measuring machines , Coatings , Engineering simulation , Excitation , Internal friction , Simulation
Impact of Mistuning on the Vibration Behaviour of the Last Stage in a Model Three Stage Low Pressure Steam Turbine
Christoph Heinz, Markus Schatz, Michael V. Casey, Heinrich Stu¨er
GT 2011; 1047-1056https://doi.org/10.1115/GT2011-45784
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Topics: Pressure , Steam turbines , Vibration , Blades , Resonance , Excitation , Failure
Experimental Study of Blade Vibration in Centrifugal Compressors
Andrew H. Lerche, J. Jeffrey Moore, Timothy C. Allison
GT 2011; 1057-1066https://doi.org/10.1115/GT2011-45928
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Topics: Blades , Compressors , Vibration , Damping , Turbomachinery , Axial flow , Failure , High cycle fatigue , Impellers , Inflow
A Hooped Pelton Runner: FE Analysis and Experimentation
Gaurangkumar C. Chaudhari, Samip P. Shah, S. A. Channiwala
GT 2011; 1067-1075https://doi.org/10.1115/GT2011-46052
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Topics: Finite element analysis , Design , Computer software , Stress , Stress analysis (Engineering)
Torsional Vibration Protection System
Valerio Depau, Valerio Rossi, Stefano Ponticelli
GT 2011; 1077-1084https://doi.org/10.1115/GT2011-46112
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Topics: Vibration , Trains , Turbomachinery , Damping , Durability , Energy generation , Engines , Generators , Liquefied natural gas , Motors
A Method for Theoretical Prediction of Frequency Scatter Ranges for Freestanding Forged Steam Turbine Blades
Thomas Gro¨nsfelder, Alexander Hofbauer, Christoph H. Richter
GT 2011; 1085-1094https://doi.org/10.1115/GT2011-46172
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Topics: Blades , Electromagnetic scattering , Steam turbines , Design , Finite element model , Geometry , Airfoils , Algebra , Algorithms , Engineering prototypes
Determination of Crack Initiation on L-1 LP Steam Turbine Blades: Part 1—Measurements on Rotor Train, Material Specimens and Blades
Zdenek Kubin, Vaclav Cerny, Pavel Panek, Tomas Misek, Jan Hlous, Lubos Prchlik
GT 2011; 1095-1102https://doi.org/10.1115/GT2011-46203
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Topics: Blades , Fracture (Materials) , Rotors , Steam turbines , Trains , Accidents , Excitation , Flutter (Aerodynamics) , Geometry , Inspection
Determination of Crack Initiation on Blade L-1 LP Steam Turbine Blades: Part 2—Computational Analyses
Josef Kellner, Zdenek Kubin, Jan Hlous, Lubos Prchlik
GT 2011; 1103-1113https://doi.org/10.1115/GT2011-46206
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Topics: Blades , Fracture (Materials) , Steam turbines , Rotors , Modal analysis , Trains , Computational fluid dynamics , Damping , Disks , Failure
Nonlinear Dynamic Analysis of a Multi-Gear Train With Time-Varying Mesh Stiffness Including Modification Coefficient Effect
T. N. Shiau, J. R. Chang, K. H. Huang, C. J. Cheng, C. R. Wang
GT 2011; 1115-1125https://doi.org/10.1115/GT2011-46286
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Topics: Bifurcation , Dynamic analysis , Gear trains , Gears , Stiffness , Trains
Elements of Dynamic Characterization of a Bladed Disk by Using the Tip-Timing Method Under Vacuum Conditions
Vsevolod Kharyton, Claude Gibert, Laurent Blanc, Fabrice Thouverez
GT 2011; 1127-1135https://doi.org/10.1115/GT2011-46435
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Topics: Coriolis force , Disks , Traveling waves , Vacuum
A Statistical Characterization of the Effects of Mistuning in Multi-Stage Bladed Disks
Kiran X. D’Souza, Bogdan I. Epureanu
GT 2011; 1137-1147https://doi.org/10.1115/GT2011-46698
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Topics: Disks , Modeling , Coordinate measuring machines , Chaos , Design , Manufacturing , Mechanical properties
Design and Analysis of a New Accessory Gearbox Housing for a Gas Turbine Engine
Partha S. Das
GT 2011; 1149-1158https://doi.org/10.1115/GT2011-46747
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Topics: Design , Gas turbines , Mechanical drives , Engines , Aircraft , Gears , Bearings , Finite element analysis , High cycle fatigue , Stress
The Influence of Blade Properties on the Forced Response of Mistuned Bladed Disks
Andreas Hohl, Benedikt Kriegesmann, Jo¨rg Wallaschek, Lars Panning
GT 2011; 1159-1170https://doi.org/10.1115/GT2011-46826
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Topics: Blades , Disks , High cycle fatigue , Waves , Degrees of freedom , Eigenvalues , Engineering simulation , Simulation , Excitation , Failure

Aerodynamic Excitation and Damping (With Turbomachinery)

Aeroelasticity at Reversed Flow Conditions: Part 1—Numerical and Experimental Investigations of a Compressor Cascade With Controlled Vibration
Harald Schoenenborn, Virginie Chenaux, Peter Ott
GT 2011; 1171-1181https://doi.org/10.1115/GT2011-45034
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Topics: Aeroelasticity , Cascades (Fluid dynamics) , Compressors , Flow (Dynamics) , Vibration , Blades , Surges , Damping , Design , Steady state
Aeroelasticity at Reversed Flow Conditions: Part 2—Application to Compressor Surge
Harald Schoenenborn, Thomas Breuer
GT 2011; 1183-1191https://doi.org/10.1115/GT2011-45035
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Topics: Aeroelasticity , Compressors , Flow (Dynamics) , Surges , Blades , Stress , Flutter (Aerodynamics) , Pressure , Airfoils , Excitation
Prediction of Turbine Rotor Blade Forcing due to In-Service Stator Vane Trailing Edge Damage
Marcus Meyer, Roland Parchem, Peter Davison
GT 2011; 1193-1201https://doi.org/10.1115/GT2011-45204
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Topics: Blades , Damage , Rotors , Stators , Turbines , Computational fluid dynamics , Chain , Engineering simulation , Engines , Excitation
Effect of Tip Clearance on the Prediction of Non-Synchronous Vibrations in Axial Compressors
Martin Drolet, Huu Duc Vo, Njuki W. Mureithi
GT 2011; 1203-1215https://doi.org/10.1115/GT2011-45392
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Topics: Clearances (Engineering) , Compressors , Vibration , Blades , Operating temperature , Axial flow , Convection , Feedback , Flow (Dynamics) , Gas turbines
Detached Eddy Simulation of Transonic Rotor Stall Flutter Using a Fully Coupled Fluid-Structure Interaction
Hongsik Im, Xiangying Chen, Gecheng Zha
GT 2011; 1217-1230https://doi.org/10.1115/GT2011-45437
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Topics: Eddies (Fluid dynamics) , Fluid structure interaction , Flutter (Aerodynamics) , Rotors , Simulation , Blades , Resonance , Annulus , Clearances (Engineering) , Flow (Dynamics)
Numerical Predictions of Rotating Stall in an Axial Multi-Stage-Compressor
Caetano Peng
GT 2011; 1231-1242https://doi.org/10.1115/GT2011-45503
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Topics: Compressors , Computational fluid dynamics , Blades , Engines , Pressure , Aeroelasticity , Probes , Stators , Vibration
Tip Running Clearances Effects on Tip Vortices Induced Axial Compressor Rotor Flutter
Caetano Peng
GT 2011; 1243-1252https://doi.org/10.1115/GT2011-45504
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Topics: Compressors , Flutter (Aerodynamics) , Rotors , Wake turbulence , Blades , Flow (Dynamics) , Computation , Stability , Stators , Boundary-value problems
Aeroelastic Analysis of Blades Cascades Through Aerodynamic Reduced-Order Modeling
Davide Finamore, Fred Nitzsche, Massimo Gennaretti
GT 2011; 1253-1262https://doi.org/10.1115/GT2011-45505
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Topics: Blades , Modeling , Cascades (Fluid dynamics) , Computational fluid dynamics , Dynamics (Mechanics) , Stability , Turbomachinery , Vibration
Fluid-Structure Interaction Using a Modal Approach
F. Debrabandere, B. Tartinville, Ch. Hirsch, G. Coussement
GT 2011; 1263-1269https://doi.org/10.1115/GT2011-45692
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Topics: Fluid structure interaction , Blades , Flow (Dynamics) , Compressors , Damping , Deformation , Fluids , Flutter (Aerodynamics) , Mode shapes , Rotors
Aeroelastic Stability Assessment of an Industrial Compressor Blade Including Mistuning Effects
Yaoguang Zhai, Ronnie Bladh, Go¨ran Dyverfeldt
GT 2011; 1271-1286https://doi.org/10.1115/GT2011-45800
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Topics: Blades , Compressors , Stability , Flutter (Aerodynamics) , Flow (Dynamics) , Oscillations , Limit cycles , Risk , Computation , Damping
Forced Response of Bladed Disks With Damping Mistuning
Oualid Khemiri, Carlos Martel, Roque Corral
GT 2011; 1287-1296https://doi.org/10.1115/GT2011-45802
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Topics: Damping , Disks , Blades , Rotors , Stiffness , Vibration
Effect of Scaling of Blade Row Sectors on the Prediction of Aerodynamic Forcing in a Highly-Loaded Transonic Turbine Stage
Seyed Mohammad Hosseini, Florian Fruth, Damian M. Vogt, Torsten H. Fransson
GT 2011; 1297-1307https://doi.org/10.1115/GT2011-45813
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Topics: Blades , Turbines , Rotors , Stators , Annulus , Excitation , Finite element model , Geometry , Modal analysis , Navier-Stokes equations
Modal and Aeroelastic Analysis of a Compressor Blisk Considering Mistuning
Jens Nipkau, Arnold Ku¨hhorn, Bernd Beirow
GT 2011; 1309-1319https://doi.org/10.1115/GT2011-45849
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Topics: Aerodynamics , Blades , Compressors , Computation , Computational fluid dynamics , Damping , Eigenvalues , Equations of motion , Finite element model , Flow (Dynamics)
Multi-Blade Row Interactions in a Low Pressure Ratio Centrifugal Compressor Stage With a Vaned Diffuser
Kishore Ramakrishnan, Simon K. Richards, Franc¸ois Moyroud, Vittorio Michelassi
GT 2011; 1321-1329https://doi.org/10.1115/GT2011-45932
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Topics: Blades , Compressors , Diffusers , Pressure , Excitation , Impellers , Acoustics , Vaneless diffusers , Computational fluid dynamics
Non-Linear Dynamics of Multi-Mode Unstable Bladed-Disks: Part I—Description of a Canonical Model and Phenomenological Results
Roque Corral, Juan Manuel Gallardo
GT 2011; 1331-1341https://doi.org/10.1115/GT2011-45983
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Topics: Disks , Nonlinear dynamics , Dynamics (Mechanics) , Blades , Rotors , Airfoils , Dry friction , Pressure , Steady state , Traveling waves
Influence of the Blade Count Ratio on Aerodynamic Forcing: Part II—High Pressure Transonic Turbine
Florian Fruth, Damian M. Vogt, Torsten H. Fransson
GT 2011; 1343-1354https://doi.org/10.1115/GT2011-46071
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Topics: Blades , High pressure (Physics) , Turbines , Excitation , Rotors , Aerodynamics , Stators , Computational fluid dynamics , Modal assurance criterion , Mode shapes
Experimental and Numerical Investigation of Mistuned Aerodynamic Influence Coefficients in an Oscillating LPT Cascade
Nenad Glodic, Damian Vogt, Torsten Fransson
GT 2011; 1355-1367https://doi.org/10.1115/GT2011-46283
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Topics: Cascades (Fluid dynamics) , Blades , Pressure , Stability , Computational fluid dynamics , Damping , Engineering simulation , Reynolds-averaged Navier–Stokes equations , Simulation , Turbines
Experimental Investigation of Forced Response Impeller Blade Vibration in a Centrifugal Compressor With Variable Inlet Guide Vanes: Part 1—Blade Damping
Armin Zemp, Reza S. Abhari, Beat Ribi
GT 2011; 1369-1380https://doi.org/10.1115/GT2011-46289
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Topics: Blades , Compressors , Damping , Impellers , Inlet guide vanes , Vibration , Flow (Dynamics) , Pressure , Resonance , Compressor impellers
Experimental Investigation of Forced Response Impeller Blade Vibration in a Centrifugal Compressor With Variable Inlet Guide Vanes: Part 2—Forcing Function and FSI Computations
Armin Zemp, Reza S. Abhari, Matthias Schleer
GT 2011; 1381-1392https://doi.org/10.1115/GT2011-46290
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Topics: Blades , Compressors , Computation , Fluid structure interaction , Impellers , Inlet guide vanes , Vibration , Excitation , Flow (Dynamics) , Strain gages
Natural Frequency Shift in a Centrifugal Compressor Impeller for High-Density Gas Applications
Yohei Magara, Kazuyuki Yamaguchi, Haruo Miura, Naohiko Takahashi, Mitsuhiro Narita
GT 2011; 1393-1401https://doi.org/10.1115/GT2011-46297
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Topics: Compressor impellers , Density , Compressors , Impellers , Water , Resonance , Computational methods , Design , Diffusers , Fluctuations (Physics)
Determination of the Wake Frequency Contents for a Twin Shaft Gas Turbine Variable Nozzle Guided Vane
Antonio Maria Grimaldi, Simone Colantoni, Antonio Melani, Pierre Manenc
GT 2011; 1403-1413https://doi.org/10.1115/GT2011-46335
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Topics: Gas turbines , Nozzles , Wakes , Nozzle guide vanes , Turbines , Maintenance , Cycles , Failure , Geometry , High cycle fatigue
Dependency of Unsteady Time-Linearized Flutter Investigations on the Steady State Flow Field
Michael Blocher, Markus May, Harald Schoenenborn
GT 2011; 1415-1427https://doi.org/10.1115/GT2011-46500
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Topics: Flow (Dynamics) , Flutter (Aerodynamics) , Steady state , Cascades (Fluid dynamics) , Compressors , Aeroelasticity , Aerospace industry , Blades , Computational fluid dynamics , Damping
Computation of Aerodynamic Damping for Flutter Analysis of a Transonic Fan
Parthasarathy Vasanthakumar
GT 2011; 1429-1437https://doi.org/10.1115/GT2011-46597
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Topics: Computation , Damping , Flutter (Aerodynamics) , Blades , Disks , Flow (Dynamics) , Rotors , Design , Finite element analysis , Modal analysis
Mu Analysis for Turbomachinery Stall Flutter
Md. M. I. Forhad, Puneet Vishwakarma, Yunjun Xu
GT 2011; 1439-1448https://doi.org/10.1115/GT2011-46624
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Topics: Blades , Flutter (Aerodynamics) , Gas turbines , Robustness , Turbomachinery
Prediction of Turbomachinery Aeroelastic Behavior From a Set of Representative Modes
Mari´a A. Mayorca, Damian M. Vogt, Hans Ma˚rtensson, Torsten H. Fransson
GT 2011; 1449-1461https://doi.org/10.1115/GT2011-46690
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Topics: Aerodynamics , Approximation , Blades , Compressors , Databases , Fluid-dynamic forces , Mode shapes , Stability , Turbomachinery
Minimizing Pressure Pulsations in a Centrifugal Compressor
Zheji Liu, Mark J. Kuzdzal
GT 2011; 1463-1472https://doi.org/10.1115/GT2011-46697
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Topics: Compressors , Pressure , Impellers , Diffusers , Vibration , Blades , Energy resources , Entrance region , Excitation , Flow (Dynamics)
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