Topics: Steam turbines , Stress , Flow (Dynamics) , Machinery , Stability , Annulus , Centrifugal force , Clearances (Engineering) , Geometry , Heat transfer

Degradation Feature Extraction of Rolling Bearings Based on Optimal Ensemble Empirical Mode Decomposition and Improved Composite Spectrum Analysis

Fengli Wang, Hua Chen

GT 2018; V07BT34A002https://doi.org/10.1115/GT2018-75041

Abstract

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Topics: Composite materials , Emission spectroscopy , Feature extraction , Rolling bearings , Spectroscopy , Bearings , Signals , Vibration , Turbomachinery , Algorithms

Rotordynamic Characterization of a Staggered Labyrinth Seal: Experimental Test Data and Comparison With Predictions

Filippo Cangioli, Giuseppe Vannini, Paolo Pennacchi, Lorenzo Ciuchicchi, Leonardo Nettis, Steven Chatterton

GT 2018; V07BT34A003https://doi.org/10.1115/GT2018-75072

Abstract

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Topics: Clearances (Engineering) , Compressors , Dynamics (Mechanics) , Flow (Dynamics) , Fluids , Gas turbines , High pressure (Physics) , Kinetic energy , Leakage , Pressure

Leakage and Rotordynamic Force Coefficients of a Three-Wave (Air in Oil) Wet Annular Seal: Measurements and Predictions

Xueliang Lu, Luis San Andrés

GT 2018; V07BT34A004https://doi.org/10.1115/GT2018-75200

Abstract

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Topics: Leakage , Waves , Clearances (Engineering) , Flow (Dynamics) , Pumps , Stiffness , Damping , Pressure , Rotors , Collapse

Leakage and Dynamic Force Coefficients for Two Labyrinth Gas Seals: Teeth-on-Stator and Interlocking Teeth Configurations — A CFD Approach to Their Performance

Luis San Andrés, Tingcheng Wu

GT 2018; V07BT34A005https://doi.org/10.1115/GT2018-75205

Abstract

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Topics: Computational fluid dynamics , Leakage , Stators , Pressure , Rotors , Damping , Flow (Dynamics) , Stiffness , Whirls , Cavities

Validation of CFD Analysis Method for Seal Dynamic Coefficients With Various Labyrinth Seal Types

Makoto Iwasaki, Kenichi Murata, Rimpei Kawashita, Yasunori Tokimasa, Kazuyuki Matsumoto, Makoto Kamishita

GT 2018; V07BT34A006https://doi.org/10.1115/GT2018-75251

Abstract

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Topics: Computational fluid dynamics , Rotors , Fins , Stators , Steam turbines , Whirls , Accelerometers , Air flow , Coating processes , Coatings

Tilting-Pad Journal Bearing in Hybrid Operation: A Numerical and Experimental Investigation

Nico Buchhorn, Sebastian Kukla, Beate Bender, Marc Neumann

GT 2018; V07BT34A007https://doi.org/10.1115/GT2018-75256

Abstract

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Topics: Journal bearings , Bearings , Deformation , Load bearing capacity , Hydrostatic pressure , Hydrostatics , Turbines , Viscosity , Film thickness , Lubricants

Design and Evaluation of Hybrid Magnetic Bearings for Turbo Compressors

Cheol Hoon Park, Jun Young Park, Eui Soo Yoon

GT 2018; V07BT34A008https://doi.org/10.1115/GT2018-75273

Abstract

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Topics: Compressors , Design , Magnetic bearings , Turbochargers , Sensors , Thrust , Vibration , Machinery , Rotors , Stress

Static and Rotordynamic Characteristics of Liquid Annular Seals With a Circumferentially-Grooved Stator and Smooth Rotor Using Three Levels of Circumferential Inlet-Fluid Rotation

Dara W. Childs, Jose M. Torres, Joshua T. Bullock

GT 2018; V07BT34A009https://doi.org/10.1115/GT2018-75325

Abstract

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Topics: Fluids , Rotation , Rotors , Stators , Stiffness , Damping , Pumps , Clearances (Engineering) , Flowmeters , Geometry

Experimental Study of the Leakage and Rotordynamic Coefficients of a Long Smooth Seal With Two-Phase, Mainly-Oil Mixtures

Min Zhang, Dara W. Childs, James E. Mclean, Jr., Dung L. Tran, Hari Shrestha

GT 2018; V07BT34A010https://doi.org/10.1115/GT2018-75328

Abstract

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Topics: Leakage , Flow (Dynamics) , Stiffness , Damping , Fluids , Rotors , Bubbles , Clearances (Engineering) , Friction , Pressure

Static and Dynamic Coefficient Measurements for a Thrust Collar Used in an Integrally Geared Compressor

Thomas Kerr, Andrew Crandall, Dara Childs, Adolfo Delgado

GT 2018; V07BT34A011https://doi.org/10.1115/GT2018-75335

Abstract

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Topics: Compressors , Thrust , Stiffness , Stress , Test facilities , Vibration , Damping , Hammers , Machinery , Particle spin

On the Design, Manufacture and Premature Failure of a Metal Mesh Thrust Bearing: How Concepts That Work on Paper, Actually Do Not

Travis A. Cable, Luis San Andrés

GT 2018; V07BT34A012https://doi.org/10.1115/GT2018-75340

Abstract

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Topics: Design , Failure , Metals , Thrust bearings , Bearings , Rotors , Damping , Foil bearings , Stress , Coating processes

On the Influence of the Entrance Section on the Rotordynamic Performance of a Pump Seal With Uniform Clearance: A Sharp Edge vs. a Round Inlet

Jing Yang, Luis San Andres

GT 2018; V07BT34A013https://doi.org/10.1115/GT2018-75414

Abstract

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Topics: Clearances (Engineering) , Pumps , Computational fluid dynamics , Pressure , Corners (Structural elements) , Flow (Dynamics) , Pressure drop , Stiffness , Damping , Engineering simulation

Coupled Thermal-Structural-Fluid Numerical Analysis of Gas Lubricated Mechanical Seals

Jingjing Luo, Hans Josef Dohmen, Friedrich-Karl Benra

GT 2018; V07BT34A014https://doi.org/10.1115/GT2018-75458

Abstract

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Topics: Fluids , Numerical analysis , Pressure , Sealing (Process) , Design , Deflection , Deformation , Film thickness , Flow (Dynamics) , Gas compressors

Experimental Investigation and Numerical Validation of the Bearing Face Flow of an Adaptive Seal

Anna-L. Zimmermann, Volker Guemmer, Tue Nguyen, Rogier H. M. Giepman

GT 2018; V07BT34A015https://doi.org/10.1115/GT2018-75503

Abstract

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Topics: Bearings , Flow (Dynamics) , Clearances (Engineering) , Pressure , Air bearings , Computational fluid dynamics , Engineering simulation , Leakage , Leakage flows , Rotors

Ultra-High Temperature Compliant Foil Bearings: The Journey to 870°C and Application in Gas Turbine Engines — Experiment

Hooshang Heshmat, James F. Walton, II, Brian D. Nicholson

GT 2018; V07BT34A016https://doi.org/10.1115/GT2018-75555

Abstract

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Topics: Foil bearings , Gas turbines , Temperature , Bearings , Ceramics , High temperature , Testing , Turbochargers , Air Force , Automotive engines

Development of High Specific Load and Low Mechanical Loss Journal Bearing With Two Pads of Tilting Supported Type

Takashi Nakano, Yuichiro Waki, Yuki Sumi, Chihiro Yoshimine, Teruaki Yamawaki

GT 2018; V07BT34A017https://doi.org/10.1115/GT2018-75593

Abstract

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Topics: Journal bearings , Stress , Bearings , Rotors , Turbines , Design , Steam turbines , Blades , Construction , Countermeasures

Evaluation of Coated Top Foil Bearings: Dry Friction, Drag Torque, and Dynamic Force Coefficients

Luis San Andrés, Wonbae Jung

GT 2018; V07BT34A018https://doi.org/10.1115/GT2018-75595

Abstract

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Topics: Drag (Fluid dynamics) , Dry friction , Foil bearings , Torque , Bearings , Stress , Coating processes , Coatings , Rotors , Excitation

Turbulence Input Parameters Correction Methodology in Water Lubricated Thrust Bearings

Xin Deng, Harrison Gates, Brian Weaver, Houston Wood, Roger Fittro

GT 2018; V07BT34A019https://doi.org/10.1115/GT2018-75597

Abstract

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Topics: Thrust bearings , Turbulence , Water , Bearings , Viscosity , Eddies (Fluid dynamics) , Lubrication , Fluids , Modeling , Film thickness

Nonlinear Analysis of Rotordynamic Fluid Forces in the Annular Plain Seal by Using Extended Bulk-Flow Analysis: Influence of Static Eccentricity and Whirling Amplitude

K. Yamada, A. Ikemoto, M. Uchiumi, T. Inoue

GT 2018; V07BT34A020https://doi.org/10.1115/GT2018-75645

Abstract

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Topics: Flow (Dynamics) , Fluids , Whirls , Machinery , Design , Rotors , Stress , Turbomachinery , Vibration

Theoretical and Experimental Analyses of Directly Lubricated Tilting-Pad Journal Bearings With Leading Edge Groove

Thomas Hagemann, Hubert Schwarze

GT 2018; V07BT34A021https://doi.org/10.1115/GT2018-75659

Abstract

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Topics: Experimental analysis , Journal bearings , Bearings , Design , Flow (Dynamics) , Stress , Lubrication , Bearing design , Boundary-value problems , Clearances (Engineering)

Potentials and Limitations of an Extended Approximation Method for Nonlinear Dynamic Journal and Thrust Bearing Forces

Daniel Vetter, Thomas Hagemann, Hubert Schwarze

GT 2018; V07BT34A022https://doi.org/10.1115/GT2018-75662

Abstract

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Topics: Approximation , Thrust bearings , Bearings , Simulation , Algorithms , Cavitation , Journal bearings , Differential equations , Errors , Modeling

Comparison of Modelling Approaches for Bump-Type Foil Thrust Bearings Operating With CO₂

Kan Qin, Daijin Li, Kai Luo, Zhansheng Tian, Ingo H. Jahn

GT 2018; V07BT34A023https://doi.org/10.1115/GT2018-75705

Abstract

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Topics: Carbon dioxide , Modeling , Thrust bearings , Computational fluid dynamics , Deformation , Rotors , Separation (Technology) , Stress , Deflection , Heating

Hydrodynamic Journal Bearings Optimization Considering Rotor Dynamics Restrictions

Leonid Moroz, Leonid Romanenko, Roman Kochurov, Evgen Kashtanov

GT 2018; V07BT34A024https://doi.org/10.1115/GT2018-75790

Abstract

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Topics: Journal bearings , Optimization , Rotordynamics , Bearings , Design , Rotors , Film thickness , Simulation , Clearances (Engineering) , Electromagnetic induction

Measurements of the Leakage and Rotordynamic Performance of Interlocking Labyrinth Seals

Keith Gary, Dara W. Childs, Mauricio A. Ramirez

GT 2018; V07BT34A025https://doi.org/10.1115/GT2018-75885

Abstract

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Topics: Leakage , Cavities , Pressure , Rotors , Stators , Brakes , Damping , Magnetic bearings , Clearances (Engineering) , Stability

Investigation of Air-Oil Distribution of Low Oil-Supplied Pressure Grooved Ring Floating Ring Bearing

Wang Yan, Li Yuhong

GT 2018; V07BT34A026https://doi.org/10.1115/GT2018-75887

Abstract

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Topics: Bearings , Pressure , Air entrainment , Computational fluid dynamics , Temperature effects , Computer simulation , Multiphase flow , Rotation , Turbochargers , Vehicles

Numerical Investigation for Characteristics and Oil-Air Distributions of Oil Film in a Tilting-Pad Journal Bearing

Aoshuang Ding, Yaobing Xiao

GT 2018; V07BT34A027https://doi.org/10.1115/GT2018-75888

Abstract

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Topics: Journal bearings , Cavitation , Shear stress , Bearings , Pressure , Rotors , Stress , Air flow , Computer simulation , High pressure (Physics)

Vibration Control for Rotor Mounted on a Novel Active Bump Type Foil Bearing With Controllable Mechanical Preloads

Hanqing Guan, Tianyu Liu, Tao Zhang, Kai Feng, Zhiyang Guo

GT 2018; V07BT34A028https://doi.org/10.1115/GT2018-75894

Abstract

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Topics: Foil bearings , Rotors , Vibration control , Bearings , Levers , Deformation , Adaptive structures , Bending (Stress) , Clearances (Engineering) , Drag (Fluid dynamics)

Effect of Circumferential Location of Radial Injection on Rotordynamic Performance of Hybrid Air Foil Bearings

Behzad Zamanian Yazdi, Daejong Kim

GT 2018; V07BT34A029https://doi.org/10.1115/GT2018-75983

Abstract

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Topics: Foil bearings , Rotors , Orifices , Stability , Bearings , Damping , Film thickness , High temperature , Modal analysis , Simulation

Improvement of Low Frequency Vibration Isolation Capability of AMB Using a Cascade PID Controller

Yixin Su, Yanhui Ma, Yongpeng Gu, Suyuan Yu, Gexue Ren

GT 2018; V07BT34A030https://doi.org/10.1115/GT2018-76023

Abstract

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Topics: Cascades (Fluid dynamics) , Control equipment , Vibration isolation , Rotors , Vibration , Simulation , Bearings , Damping , Design , Displacement

Design Characteristics of an Aerodynamic Foil Bearing With Adaptable Bore Clearance

Hossein Sadri, Henning Schlums, Michael Sinapius

GT 2018; V07BT34A031https://doi.org/10.1115/GT2018-76204

Abstract

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Topics: Clearances (Engineering) , Design , Foil bearings , Bearings , Shapes , Stress , Actuators , Cooling , Exhaust systems , Finite element methods

Experimental Force Coefficients for Two Sealed Ends Squeeze Film Dampers (Piston Rings and O-Rings): An Assessment of Their Similarities and Differences

Luis San Andrés, Bonjin Koo, Sung-Hwa Jeung

GT 2018; V07BT34A032https://doi.org/10.1115/GT2018-76224

Abstract

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Topics: Dampers , Piston rings , Seals , Pressure , Damping , Lubricants , Inertia (Mechanics) , Bearings , Cavitation , Flow (Dynamics)

Effect of Axial Force on Rotordynamics of a Rigid Rotor Supported by Foil Bearings

Wanhui Liu, Daejong Kim, Kai Feng

GT 2018; V07BT34A033https://doi.org/10.1115/GT2018-76261

Abstract

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Topics: Foil bearings , Rotordynamics , Rotors , Bearings , Stability , Modal analysis , Simulation , Stiffness , Damping , Degrees of freedom

A Feasibility Study of Controllable Gas Foil Bearings With Piezoelectric Materials via Rotordynamic Model Predictions

Jisu Park, Kyuho Sim

GT 2018; V07BT34A034https://doi.org/10.1115/GT2018-76273

Abstract

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Topics: Foil bearings , Piezoelectric materials , Bearings , Clearances (Engineering) , Lubrication , Shapes , Damping , Film thickness , Fluid films , Gas bearings

Hermetically Sealed Squeeze Film Damper for Operation in Oil-Free Environments

Bugra Ertas, Adolfo Delgado

GT 2018; V07BT34A035https://doi.org/10.1115/GT2018-76308

Abstract

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Topics: Dampers , Damping , Cavitation , Flow (Dynamics) , Gas bearings , Stiffness , Clearances (Engineering) , Bearings , Cavities , Density

Compliant Hybrid Gas Bearing Using Modular Hermetically-Sealed Squeeze Film Dampers

Bugra Ertas, Adolfo Delgado

GT 2018; V07BT34A036https://doi.org/10.1115/GT2018-76312

Abstract

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Topics: Dampers , Gas bearings , Bearings , Damping , Stress , Flow (Dynamics) , Testing , Bearing design , Carbon , Cavities

Dynamic Properties of Water-Lubricated Double Clearance Squeeze Film Damper Supported by O-Rings

Tadayoshi Shoyama, Koji Fujimoto

GT 2018; V07BT34A037https://doi.org/10.1115/GT2018-76404

Abstract

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Topics: Clearances (Engineering) , Dampers , Seals , Water , Damping , Cavitation , Inertia (Mechanics) , Turbulence , Vibration

Vibration Isolation of Rotating Machinery by Parameters Switched Magnetic Bearing and High Static Low Dynamic Stiffness Supports

Yanhui Ma, Yixin Su, Suyuan Yu

GT 2018; V07BT34A038https://doi.org/10.1115/GT2018-76535

Abstract

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Topics: Machinery , Magnetic bearings , Stiffness , Vibration isolation , Vibration , Bearings , Rotors , Design , Damping , Displacement

A CFD Based Approach for Estimation of Rotor Dynamic Coefficients for Liquid Annular Seals in Turbomachinery

Bachanti Krishna, B. Premachandran, Ashish K. Darpe

GT 2018; V07BT34A039https://doi.org/10.1115/GT2018-76634

Abstract

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Topics: Computational fluid dynamics , Rotors , Turbomachinery , Fluids , Flow (Dynamics) , Leakage , Stability , Clearances (Engineering) , Curve fitting , Damping

Impact Analysis of Pocket Damper Seal Geometry Variations on Leakage Performance and Rotordynamic Force Coefficients Using CFD

Clemens Griebel

GT 2018; V07BT34A040https://doi.org/10.1115/GT2018-76864

Abstract

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Topics: Computational fluid dynamics , Dampers , Geometry , Leakage , Design , Damping , Rotors , Stiffness , Whirls , Cavities

Application of Dry-Friction Whip and Whirl Solution Methods to Systems With Support Asymmetry

Jason C. Wilkes

GT 2018; V07BT34A041https://doi.org/10.1115/GT2018-76991

Abstract

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Topics: Dry-friction whip and whirl , Rotors , Stators , Annulus , Clearances (Engineering)

Floating Shock Platform Testing of a Magnetic Bearing Supported Chiller Compressor: Measurements and Simulation Results

Lawrence Hawkins, Zhiyang Wang, Koman Nambiar

GT 2018; V07BT34A042https://doi.org/10.1115/GT2018-77031

Abstract

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Topics: Compressors , Magnetic bearings , Shock (Mechanics) , Simulation results , Testing , Bearings , Engines , Motors , Navy , Rotors

A High Speed Test Rig Capable of Running at 190,000rpm to Characterize Gas Foil Thrust Bearings

Nguyen T. LaTray, Daejong Kim

GT 2018; V07BT34A043https://doi.org/10.1115/GT2018-77111

Abstract

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Topics: Thrust bearings , Stress , Bearings , Testing , Design , Energy consumption , Film thickness , Instrumentation , Temperature , Test facilities

Development of a Non-Contacting Mechanical Seal for High Performance Turbocharger Applications

Daniel A. Nelson

GT 2018; V07BT34A044https://doi.org/10.1115/GT2018-77126

Abstract

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Topics: Turbochargers , Pressure , Design , Tribology , Wear , Automotive engines , Bearings , Compressors , Computational fluid dynamics , Durability

Development and Validation of Test Rig for Measurements of Leakage and Rotordynamic Performance of Interlocking Labyrinth Seals

Mauricio Ramirez, Dara Childs, Keith Gary

GT 2018; V07BT34A045https://doi.org/10.1115/GT2018-77131

Abstract

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Topics: Leakage , Cavities , Damping , Pressure , Rotors , Stators , Stiffness , Pressure measurement , Turbomachinery , Waves

On the Leakage, Torque and Dynamic Force Coefficients of an Air in Oil (Wet) Annular Seal: A CFD Analysis Anchored to Test Data

Luis San Andrés, Jing Yang, Xueliang Lu

GT 2018; V07BT34A046https://doi.org/10.1115/GT2018-77140

Abstract

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Topics: Computational fluid dynamics , Leakage , Torque , Stiffness , Drag (Fluid dynamics) , Pumps , Clearances (Engineering) , Damping , Flow (Dynamics) , Pressure

A Thermoelastohydrodynamic Analysis for the Static Performance of High-Speed Heavy Load Tilting-Pad Journal Bearing Operating in the Turbulent Flow Regime and Comparisons to Test Data

Hirotoshi Arihara, Yuki Kameyama, Yoshitaka Baba, Luis San Andrés

GT 2018; V07BT34A047https://doi.org/10.1115/GT2018-77151

Abstract

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Topics: Journal bearings , Stress , Turbulence , Temperature , Bearings , Pressure , Deformation , Flow (Dynamics) , Rotors , Clearances (Engineering)