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Proceedings Papers
Volume 10A: Structures and Dynamics
Aerodynamic Excitation and Damping
Coupled Mode Flutter Analysis of Turbomachinery Blades Using an Adaptation of the P-K Method
GT 2020; V10AT24A001https://doi.org/10.1115/GT2020-14105
Topics:
Blades
,
Flutter (Aerodynamics)
,
Turbomachinery
,
Damping
,
Design
,
Eigenvalues
,
Engineering simulation
,
Excitation
,
Fluids
,
Mode shapes
Applicability of Harmonic Balance for the Determination of Blade Stability Within the Prescribed Motion Approach
GT 2020; V10AT24A002https://doi.org/10.1115/GT2020-14132
Topics:
Blades
,
Stability
,
Computational fluid dynamics
,
Engineering simulation
,
Oscillations
,
Simulation
,
Compressors
,
Damping
,
Design
,
Harmonic motion
Higher-Order Conceptual Model for Labyrinth Seal Flutter
GT 2020; V10AT24A003https://doi.org/10.1115/GT2020-14387
Topics:
Flutter (Aerodynamics)
,
Cavities
,
Flow (Dynamics)
,
High pressure (Physics)
,
Cycles
,
Design
,
Engineering simulation
,
Simulation
,
Stability
,
Torsion
Transonic Fan Blade Redesign Approach to Attenuate Nonsynchronous Vibration
GT 2020; V10AT24A005https://doi.org/10.1115/GT2020-14646
Topics:
Blades
,
Vibration
,
Geometry
,
Manufacturing
,
High cycle fatigue
,
Stress
,
Switches
,
Traveling waves
On the Mechanism of Spike Stall Inception and Near Stall Non-Synchronous Vibration in an Axial Compressor
GT 2020; V10AT24A006https://doi.org/10.1115/GT2020-14711
Topics:
Compressors
,
Stall inception
,
Vibration
,
Flow (Dynamics)
,
Fluctuations (Physics)
,
Engineering simulation
,
Shear (Mechanics)
,
Simulation
,
Blades
,
Engines
Effects of S-Shaped Intake on Aeromechanical Characteristics of a Transonic Fan
GT 2020; V10AT24A007https://doi.org/10.1115/GT2020-14750
Topics:
Acoustics
,
Aeroelasticity
,
Aircraft engines
,
Annulus
,
Blades
,
Boundary layers
,
Composite materials
,
Damping
,
Diffusers
,
Ducts
Micro-, Macromechanical and Aeroelastic Investigation of Glass-Fiber Based, Lightweight Turbomachinery Components
Senad Iseni, Mahesh Ramaswamy Guru Prasad, Alexander Hartmaier, Klaudiusz Holeczek, Niels Modeler, Francesca di Mare
GT 2020; V10AT24A010https://doi.org/10.1115/GT2020-14951
Topics:
Glass fibers
,
Turbomachinery
,
Composite materials
,
Anisotropy
,
Constitutive equations
,
Damping
,
Design
,
Elasticity
,
Engines
,
Polymers
Improved Delayed Detached Eddy Simulation (IDDES) of a 1.5 Stage Axial Compressor Non-Synchronous Vibration
GT 2020; V10AT24A011https://doi.org/10.1115/GT2020-15073
Topics:
Compressors
,
Eddies (Fluid dynamics)
,
Simulation
,
Vibration
,
Blades
,
Rotors
,
Pressure
,
Suction
,
Boundary-value problems
,
Diffusion (Physics)
On the Effect and Analysis of Fluid-Structural Mode Coupling
GT 2020; V10AT24A012https://doi.org/10.1115/GT2020-15083
Topics:
Acoustics
,
Aerodynamics
,
Aeroelasticity
,
Aircraft
,
Cycles
,
Design
,
Dynamic stability
,
Dynamics (Mechanics)
,
Eigenvalues
,
Flow (Dynamics)
Influence of Pre-Swirl, Rotor Speed and Blade Count on Aeroelastic Coupling Mechanisms During Stall Inception of a Transonic Compressor
GT 2020; V10AT24A015https://doi.org/10.1115/GT2020-15255
Topics:
Blades
,
Compressors
,
Rotors
,
Stall inception
,
Vibration
,
Waves
,
Aerodynamics
,
Computer simulation
,
Instrumentation
,
Stability
Aeromechanical Characterization of a Last Stage Steam Blade at Low Load Operation: Part 2 — Computational Modelling and Comparison
Lorenzo Pinelli, Federico Vanti, Lorenzo Peruzzi, Andrea Arnone, Andrea Bessone, Claudio Bettini, Roberto Guida, Michela Marré Brunenghi, Vaclav Slama
GT 2020; V10AT24A017https://doi.org/10.1115/GT2020-15409
Topics:
Blades
,
Modeling
,
Steam
,
Stress
,
Damping
,
Computational fluid dynamics
,
Flutter (Aerodynamics)
,
Pressure
,
Steam turbines
,
Simulation
Aeromechanical Characterization of a Last Stage Steam Blade at Low Load Operation: Part 1 — Experimental Measurements and Data Processing
GT 2020; V10AT24A019https://doi.org/10.1115/GT2020-15450
Topics:
Blades
,
Steam
,
Stress
,
Design
,
Damping
,
Flutter (Aerodynamics)
,
Flow (Dynamics)
,
Steam turbines
,
Computational fluid dynamics
,
Excitation
Experimental Study on Flutter Stability of Transonic Cooled Turbine Blade Stage With 3-Dimensional Mode Shape Excitation
Jeongseek Kang, Ethan Perez, Alex Vorobiev, Scott Morris, Joshua Cameron, Daehyun Kim, Hongsik Im, Matthew Montgomery
GT 2020; V10AT24A021https://doi.org/10.1115/GT2020-15723
Topics:
Damping
,
Excitation
,
Flutter (Aerodynamics)
,
Mode shapes
,
Stability
,
Turbine blades
Numerical Investigation of the Effect of Flutter Instability of the Blade on the Unsteady Flow in a Modern Low-Pressure Turbine
GT 2020; V10AT24A022https://doi.org/10.1115/GT2020-15959
Topics:
Aeroelasticity
,
Blades
,
Computer simulation
,
Flutter (Aerodynamics)
,
Pressure
,
Turbines
,
Unsteady flow
Acoustic Resonance in an Axial Multistage Compressor Leading to Non-Synchronous Blade Vibration
GT 2020; V10AT24A023https://doi.org/10.1115/GT2020-16011
Topics:
Acoustics
,
Blades
,
Compressors
,
Resonance
,
Vibration
,
Waves
,
Engineering simulation
,
Rotors
,
Simulation
,
Annulus
Numerical Investigation of the Effect of Operating Point on the Aerodynamic Excitation in a Radial Turbine Stage
GT 2020; V10AT24A025https://doi.org/10.1115/GT2020-16045
Topics:
Excitation
,
Turbines
,
Computational fluid dynamics
,
Mode shapes
,
Pressure
,
Blades
,
Engineering simulation
,
Interpolation
,
Modeling
,
Rotors
Investigating the Causes of Outlet Guide Vane Buffeting
GT 2020; V10AT24A027https://doi.org/10.1115/GT2020-16063
Topics:
Guide vanes
,
Simulation
,
Engines
,
Excitation
,
Pressure
,
Aircraft engines
,
Architecture
,
Computational fluid dynamics
,
Design
,
Fatigue
Numerical Analysis of Flutter in Variable Geometry Compressors
GT 2020; V10AT24A028https://doi.org/10.1115/GT2020-16093
Topics:
Compressors
,
Flutter (Aerodynamics)
,
Geometry
,
Numerical analysis
,
Blades
,
Computation
,
Design
,
Rotors
,
Aeroelasticity
,
Clearances (Engineering)
Efficient Steady and Unsteady Flow Modeling for Arbitrarily Mis-Staggered Bladerow Under Influence of Inlet Distortion
GT 2020; V10AT24A029https://doi.org/10.1115/GT2020-16204
Topics:
Modeling
,
Unsteady flow
,
Blades
,
Engineering simulation
,
Flow (Dynamics)
,
Simulation
,
Annulus
,
Computation
,
Fourier transforms
,
Inflow
Influence of Inlet Distortions on the Forced Vibration of a High Pressure Compressor Rig
GT 2020; V10AT24A030https://doi.org/10.1115/GT2020-16221
Topics:
Compressors
,
High pressure (Physics)
,
Vibration
,
Engines
,
Blades
,
Damping
,
Excitation
,
Resonance
,
Rotors
Analysis of Friction-Saturated Flutter Vibrations With a Fully-Coupled Frequency Domain Method
GT 2020; V10AT24A032https://doi.org/10.1115/GT2020-16253
Topics:
Flutter (Aerodynamics)
,
Friction
,
Vibration
,
Oscillations
,
Damping
,
Limit cycles
,
Aerodynamics
,
Algorithms
,
Boundary-value problems
,
Deflection
Bearing and Seal Dynamics
Test Results for the Static and Rotordynamic Characteristics of a Long (L/D = 0.75) Smooth Seal in Two-Phase (Mainly Gas) Conditions With a 62-Bar Inlet Pressure
GT 2020; V10AT25A001https://doi.org/10.1115/GT2020-14118
Topics:
Pressure
,
Stiffness
,
Damping
,
Flow (Dynamics)
,
Gas turbines
,
Geometry
,
Leakage
,
Multiphase flow
,
Pistons
,
Pumps
On the Leakage and Dynamic Force Coefficients of a Novel Stepped Shaft Pocket Damper Seal: Experimental and Numerical Verification
GT 2020; V10AT25A002https://doi.org/10.1115/GT2020-14153
Topics:
Dampers
,
Leakage
,
Damping
,
Clearances (Engineering)
,
Computational fluid dynamics
,
Rotors
,
Blades
,
Flow (Dynamics)
,
Turbomachinery
,
Design
Gas Labyrinth Seals: Improved Prediction of Leakage in Gas Labyrinth Seals Using an Updated Kinetic Energy Carry-Over Coefficient
GT 2020; V10AT25A004https://doi.org/10.1115/GT2020-14167
Topics:
Kinetic energy
,
Leakage
,
Flow (Dynamics)
,
Clearances (Engineering)
,
Computational fluid dynamics
,
Pressure
,
Cavities
,
Geometry
,
Rotors
,
Stators
On the Effect of the Gap of End Seals on Force Coefficients of a Test Integral Squeeze Film Damper: Experiments and Predictions
GT 2020; V10AT25A005https://doi.org/10.1115/GT2020-14182
Topics:
Dampers
,
Damping
,
Bearings
,
Lubricants
,
Rotors
,
Stiffness
,
Clearances (Engineering)
,
Flow (Dynamics)
,
Stress
,
Compressibility
Numerical Investigation of Rotor and Journal Bearing Parameters on Nonlinear Vibration of a Highly Flexible Rotor Considering Journal Angular Motion With Experimental Verification
GT 2020; V10AT25A006https://doi.org/10.1115/GT2020-14254
Topics:
Journal bearings
,
Nonlinear vibration
,
Rotors
,
Bearings
,
Bifurcation
,
Disks
,
Limit cycles
,
Degrees of freedom
,
Finite element analysis
,
Rolling bearings
Experimental Study on the Performance of a See-Through Labyrinth Seal With Two-Phase, Mainly-Liquid Mixtures
GT 2020; V10AT25A008https://doi.org/10.1115/GT2020-14268
Topics:
Centrifugal pumps
,
Clearances (Engineering)
,
Damping
,
Flow (Dynamics)
,
Fluids
,
Friction
,
Gas industry
,
Leakage
,
Pistons
,
Pressure
Dynamic Identification of 280mm Diameter Tilting Pad Journal Bearings: Test Results and Measurement Uncertainties Assessment of Different Designs
Riccardo Ferraro, Alice Innocenti, Mirko Libraschi, Michele Barsanti, Enrico Ciulli, Paola Forte, Matteo Nuti
GT 2020; V10AT25A013https://doi.org/10.1115/GT2020-14718
Topics:
Journal bearings
,
Measurement uncertainty
Additively Manufactured Compliant Hybrid Gas Thrust Bearing for sCO2 Turbomachinery: Design and Proof of Concept Testing
GT 2020; V10AT25A017https://doi.org/10.1115/GT2020-14959
Topics:
Additive manufacturing
,
Design
,
Testing
,
Thrust bearings
,
Turbomachinery
,
Bearings
,
Thrust
,
Deflection
,
Stiffness
,
Clearances (Engineering)
Additively Manufactured Compliant Hybrid Gas Thrust Bearing for sCO2 Turbomachinery: Experimental Evaluation and Fluid-Structure Model Predictions
GT 2020; V10AT25A018https://doi.org/10.1115/GT2020-14964
Topics:
Additive manufacturing
,
Fluids
,
Thrust bearings
,
Turbomachinery
,
Stress
,
Bearings
,
Pressure
,
Hydrostatics
,
Thrust
,
Deflection
Load Influence on Hydrostatic Oil Film Journal Bearing Stiffness Characteristics
GT 2020; V10AT25A020https://doi.org/10.1115/GT2020-15008
Topics:
Bearings
,
Damping
,
Hydrostatics
,
Journal bearings
,
Stiffness
,
Stress
Design of a Compact Magnetically Levitated Blower for Space Applications
GT 2020; V10AT25A023https://doi.org/10.1115/GT2020-15090
Topics:
Design
,
Magnetic bearings
,
Bearings
,
Carbon dioxide
,
Sorbents
,
Actuators
,
Air bearings
,
Air flow
,
Ball bearings
,
Energy consumption
Numerical Investigation for Characteristics and Oil-Air Distributions of a Tilting-Pad Journal Bearing Under Different Loads
GT 2020; V10AT25A024https://doi.org/10.1115/GT2020-15151
Topics:
Bearings
,
Cavitation
,
Journal bearings
,
Stress
,
Flow (Dynamics)
,
Turbulence
,
Film thickness
,
Knudsen number
,
Rotors
,
Simulation results
Novel Approach for Optical Characterization of Thrust Collar Lubricated Area: Experimental and Numerical Results
GT 2020; V10AT25A025https://doi.org/10.1115/GT2020-15467
Topics:
Thrust
,
Cavitation
,
Stress
,
Turbulence
,
Computational fluid dynamics
,
Modeling
,
Pressure
,
Algorithms
,
Bearings
,
Compressors
A General-Purpose Test Facility for Evaluating Gas Lubricated Thrust Bearings
GT 2020; V10AT25A027https://doi.org/10.1115/GT2020-15520
Topics:
Test facilities
,
Thrust bearings
,
Bearings
,
Fluids
,
Design
,
Gas turbines
,
Hydrostatics
,
Lubricants
,
Stress
,
Testing
A Novel Controlled-Motion Test Rig to Evaluate Effect of Synchronous and Subsynchronous Lateral Vibration on Reliability and Performance of Mechanical Seals in Pumps
GT 2020; V10AT25A029https://doi.org/10.1115/GT2020-15749
Topics:
Pumps
,
Reliability
,
Vibration
,
Rotors
,
Whirls
,
Flow (Dynamics)
,
Leakage
,
Mineral oil
,
Temperature
,
Clearances (Engineering)
Theoretical Study on Static Performance of Herringbone Grooved Aerodynamics Foil Bearing
GT 2020; V10AT25A030https://doi.org/10.1115/GT2020-15779
Topics:
Aerodynamics
,
Foil bearings
,
Bearings
,
Energy consumption
,
Friction
,
Stress
,
Pressure
,
Film thickness
,
Finite difference methods
,
Rotation
Influence of Shunt Injection on Predicted Rotordynamic Coefficients of a Labyrinth Seal Using Transient CFD
GT 2020; V10AT25A031https://doi.org/10.1115/GT2020-15820
Topics:
Computational fluid dynamics
,
Transients (Dynamics)
,
Compressors
,
Cavities
,
Damping
,
Fluids
,
Impellers
,
Rotors
,
Steady state
,
American Petroleum Institute
Experimental Investigation on the Rubbing Process of Labyrinth Seals Against Honeycomb Liners
GT 2020; V10AT25A032https://doi.org/10.1115/GT2020-15935
Topics:
Honeycomb structures
,
Wear
,
Flow (Dynamics)
,
Leakage
,
Optimization
,
Rotors
,
Sealing (Process)
,
Service life (Equipment)
,
Stators
,
Stress
Rolling Bearing Parametric Excitation of a Jeffcott Rotor System
GT 2020; V10AT25A034https://doi.org/10.1115/GT2020-16148
Topics:
Excitation
,
Rolling bearings
,
Rotors
Numerical Investigation on the Static and Rotordynamic Characteristics for Two Types of Novel Mixed Helical Groove Seals
GT 2020; V10AT25A036https://doi.org/10.1115/GT2020-16303
Topics:
Bearings
,
Cavities
,
Computational fluid dynamics
,
Dampers
,
Damping
,
Deformation
,
Drag (Fluid dynamics)
,
Energy dissipation
,
Fluids
,
High pressure (Physics)
Experimental Investigation and Numerical Modelling of a Large Heavily-Loaded Tilting Pad Journal Bearing With Polymer Lined Pads
Filippo Cangioli, Richard Livermore-Hardy, Guy Pethybridge, Uemit Mermertas, Michael Stottrop, Beate Bender
GT 2020; V10AT25A037https://doi.org/10.1115/GT2020-16319
Topics:
Bearings
,
Journal bearings
,
Lubrication
,
Modeling
,
Polymers
,
Stress