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ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition

September 21–25, 2020

Virtual, Online

Conference Sponsors:

ISBN:

978-0-7918-8421-8

In This Volume

Aerodynamic Excitation and Damping (32)
Bearing and Seal Dynamics (38)

Volume 10A: Structures and Dynamics

Aerodynamic Excitation and Damping

Coupled Mode Flutter Analysis of Turbomachinery Blades Using an Adaptation of the P-K Method

Matthias Schuff, Virginie Anne Chenaux

GT 2020; V10AT24A001doi:https://doi.org/10.1115/GT2020-14105

Abstract

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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

Virginie Anne Chenaux, Matthias Schuff, David Quero

GT 2020; V10AT24A002doi:https://doi.org/10.1115/GT2020-14132

Abstract

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Topics: Blades , Stability , Computational fluid dynamics , Engineering simulation , Oscillations , Simulation , Compressors , Damping , Design , Harmonic motion

Higher-Order Conceptual Model for Labyrinth Seal Flutter

Roque Corral, Michele Greco, Almudena Vega

GT 2020; V10AT24A003doi:https://doi.org/10.1115/GT2020-14387

Abstract

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Topics: Flutter (Aerodynamics) , Cavities , Flow (Dynamics) , High pressure (Physics) , Cycles , Design , Engineering simulation , Simulation , Stability , Torsion

Aerodynamic Damping Analysis for Radial Turbine Featuring a Multi-Channel Casing Design

Ahmed Farid Hassan, Tobias Müller, Markus Schatz, Damian M. Vogt

GT 2020; V10AT24A004doi:https://doi.org/10.1115/GT2020-14410

Abstract

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Topics: Damping , Design , Turbines , Flow (Dynamics) , Rotors , Computer simulation , Excitation , Fluids , Modeling , Open channels (Hydraulics)

Transonic Fan Blade Redesign Approach to Attenuate Nonsynchronous Vibration

Yaozhi Lu, Bharat Lad, Mehdi Vahdati

GT 2020; V10AT24A005doi:https://doi.org/10.1115/GT2020-14646

Abstract

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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

Daniel Möller, Heinz-Peter Schiffer

GT 2020; V10AT24A006doi:https://doi.org/10.1115/GT2020-14711

Abstract

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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

Yun Zheng, Kang Xu, Hui Yang, Qingzhe Gao, Xiubo Jin

GT 2020; V10AT24A007doi:https://doi.org/10.1115/GT2020-14750

Abstract

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Topics: Acoustics , Aeroelasticity , Aircraft engines , Annulus , Blades , Boundary layers , Composite materials , Damping , Diffusers , Ducts

Aeroelastic Stability of Axial Compressor Blades Under Different Operating Conditions

Mingchang Fang, Yanrong Wang

GT 2020; V10AT24A008doi:https://doi.org/10.1115/GT2020-14758

Abstract

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Topics: Blades , Clearances (Engineering) , Compressors , Flutter (Aerodynamics) , Stability , Damping , Rotors , Turbomachinery

Aerodynamic Investigation of a Composite Low-Speed Fan for UHBR Application

Martin Rodrigues, Laurent Soulat, Benoit Paoletti, Xavier Ottavy, Christoph Brandstetter

GT 2020; V10AT24A009doi:https://doi.org/10.1115/GT2020-14915

Abstract

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Topics: Composite materials , Fans , Stability , Vibration , Blades , Compressors , Design , Engineering simulation , Flow (Dynamics) , Flutter (Aerodynamics)

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; V10AT24A010doi:https://doi.org/10.1115/GT2020-14951

Abstract

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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

Purvic Patel, Yunchao Yang, Gecheng Zha

GT 2020; V10AT24A011doi:https://doi.org/10.1115/GT2020-15073

Abstract

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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

Mani Sadeghi, Ming-Ta Yang, Huan-Min Shang, Eric Grover

GT 2020; V10AT24A012doi:https://doi.org/10.1115/GT2020-15083

Abstract

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Topics: Acoustics , Aerodynamics , Aeroelasticity , Aircraft , Cycles , Design , Dynamic stability , Dynamics (Mechanics) , Eigenvalues , Flow (Dynamics)

Experimental Study on the Effect of Clocking on the Propagation of Inflow Pressure Distortions in a Low Pressure Turbine Stage

L. Simonassi, M. Zenz, P. Bruckner, S. Pramstrahler, F. Heitmeir, A. Marn

GT 2020; V10AT24A013doi:https://doi.org/10.1115/GT2020-15123

Abstract

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Topics: Aerodynamics , Inflow , Pressure , Rotor vibration , Strain gages , Turbines

Investigation of Working Line Variation Onto Forced Response Vibrations of a Compressor Blisk

Seif ElMasry, Arnold Kühhorn, Felix Figaschewsky

GT 2020; V10AT24A014doi:https://doi.org/10.1115/GT2020-15145

Abstract

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Topics: Compressors , Vibration

Influence of Pre-Swirl, Rotor Speed and Blade Count on Aeroelastic Coupling Mechanisms During Stall Inception of a Transonic Compressor

Daniel Franke, Maximilian Jüngst, Daniel Möller, Heinz-Peter Schiffer, Thomas Giersch

GT 2020; V10AT24A015doi:https://doi.org/10.1115/GT2020-15255

Abstract

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Topics: Blades , Compressors , Rotors , Stall inception , Vibration , Waves , Aerodynamics , Computer simulation , Instrumentation , Stability

Numerical and Experimental Research of the Highly Loaded Compressor 1^st Stage: Part 1 — Aerodynamics

Iaroslav Druzhinin, Victor Mileshin, Alexander Petrovichev, Alexander Stepanov

GT 2020; V10AT24A016doi:https://doi.org/10.1115/GT2020-15333

Abstract

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Topics: Aerodynamics , Compressors , High pressure (Physics)

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; V10AT24A017doi:https://doi.org/10.1115/GT2020-15409

Abstract

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Topics: Blades , Modeling , Steam , Stress , Damping , Computational fluid dynamics , Flutter (Aerodynamics) , Pressure , Steam turbines , Simulation

Mistuning Effects on the Nonlinear Friction Saturation of Flutter Vibration Amplitude

Carlos Martel, Salvador Rodríguez

GT 2020; V10AT24A018doi:https://doi.org/10.1115/GT2020-15442

Abstract

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Topics: Flutter (Aerodynamics) , Friction , Vibration , Blades , Disks , Springs , Engineering simulation , Rotors , Simulation , Traveling waves

Aeromechanical Characterization of a Last Stage Steam Blade at Low Load Operation: Part 1 — Experimental Measurements and Data Processing

A. Bessone, R. Guida, M. Marrè Brunenghi, S. Patrone, L. Carassale, Z. Kubin, A. Arnone, L. Pinelli

GT 2020; V10AT24A019doi:https://doi.org/10.1115/GT2020-15450

Abstract

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Topics: Blades , Steam , Stress , Design , Damping , Flutter (Aerodynamics) , Flow (Dynamics) , Steam turbines , Computational fluid dynamics , Excitation

Numerical Stability Analysis of Oil Collector Case Self-Excited Vibrations

Nikolay V. Shuvaev, Natalia O. Voronova, Kirill A. Vinogradov

GT 2020; V10AT24A020doi:https://doi.org/10.1115/GT2020-15563

Abstract

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Topics: Flutter (Aerodynamics) , Numerical stability , Vibration

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; V10AT24A021doi:https://doi.org/10.1115/GT2020-15723

Abstract

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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

Shine Win Naung, Mohammad Rahmati, Hamed Farokhi

GT 2020; V10AT24A022doi:https://doi.org/10.1115/GT2020-15959

Abstract

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Topics: Aeroelasticity , Blades , Computer simulation , Flutter (Aerodynamics) , Pressure , Turbines , Unsteady flow

Acoustic Resonance in an Axial Multistage Compressor Leading to Non-Synchronous Blade Vibration

Anne-Lise Fiquet, Agathe Vercoutter, Nicolas Buffaz, Stéphane Aubert, Christoph Brandstetter

GT 2020; V10AT24A023doi:https://doi.org/10.1115/GT2020-16011

Abstract

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Topics: Acoustics , Blades , Compressors , Resonance , Vibration , Waves , Engineering simulation , Rotors , Simulation , Annulus

Design Space Exploration of Turbine Blade Shroud Interlock for Flutter Stability

Olatz Larrieta, Roberto Alonso, Óscar Pérez Escobar, Ibrahim Eryilmaz, Vassilios Pachidis

GT 2020; V10AT24A024doi:https://doi.org/10.1115/GT2020-16040

Abstract

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Topics: Blades , Design , Flutter (Aerodynamics) , Stability , Turbine blades

Numerical Investigation of the Effect of Operating Point on the Aerodynamic Excitation in a Radial Turbine Stage

Nikola Kovachev, Damian M. Vogt

GT 2020; V10AT24A025doi:https://doi.org/10.1115/GT2020-16045

Abstract

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Topics: Excitation , Turbines , Computational fluid dynamics , Mode shapes , Pressure , Blades , Engineering simulation , Interpolation , Modeling , Rotors

Locked-In Phenomenon Between Tip Clearance Flow Instabilities and Enforced Blade Motion in Axial Transonic Compressor Rotors

Le Han, Dasheng Wei, Yanrong Wang, Xiaobo Zhang, Mingchang Fang

GT 2020; V10AT24A026doi:https://doi.org/10.1115/GT2020-16050

Abstract

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Topics: Blades , Clearances (Engineering) , Compressors , Flow instability , Rotors

Investigating the Causes of Outlet Guide Vane Buffeting

Jonah R. Harris, Bharat Lad, Sina Stapelfeldt

GT 2020; V10AT24A027doi:https://doi.org/10.1115/GT2020-16063

Abstract

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Topics: Guide vanes , Simulation , Engines , Excitation , Pressure , Aircraft engines , Architecture , Computational fluid dynamics , Design , Fatigue

Numerical Analysis of Flutter in Variable Geometry Compressors

Kentaro Suzuki, Fanzhou Zhao, Mehdi Vahdati

GT 2020; V10AT24A028doi:https://doi.org/10.1115/GT2020-16093

Abstract

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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

Hien M. Phan, Li He

GT 2020; V10AT24A029doi:https://doi.org/10.1115/GT2020-16204

Abstract

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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

Falco Franz, Arnold Kühhorn, Thomas Giersch, Felix Figaschewsky, Sven Schrape

GT 2020; V10AT24A030doi:https://doi.org/10.1115/GT2020-16221

Abstract

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Topics: Compressors , High pressure (Physics) , Vibration , Engines , Blades , Damping , Excitation , Resonance , Rotors

A New Harmonic Balance Approach Using Multidimensional Time

Laura Junge, Christian Frey, Graham Ashcroft, Edmund Kügeler

GT 2020; V10AT24A031doi:https://doi.org/10.1115/GT2020-16224

Abstract

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Topics: Aeroelasticity , Blades , Computer simulation , Engineering simulation , Errors , Excitation , Flow (Dynamics) , Flutter (Aerodynamics) , Fourier transforms , Inflow

Analysis of Friction-Saturated Flutter Vibrations With a Fully-Coupled Frequency Domain Method

Christian Berthold, Johann Gross, Christian Frey, Malte Krack

GT 2020; V10AT24A032doi:https://doi.org/10.1115/GT2020-16253

Abstract

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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

Dung L. Tran, Dara W. Childs, Hari Shrestha, Min Zhang

GT 2020; V10AT25A001doi:https://doi.org/10.1115/GT2020-14118

Abstract

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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

Jing Yang, Luis San Andrés, Xueliang Lu

GT 2020; V10AT25A002doi:https://doi.org/10.1115/GT2020-14153

Abstract

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Topics: Dampers , Leakage , Damping , Clearances (Engineering) , Computational fluid dynamics , Rotors , Blades , Flow (Dynamics) , Turbomachinery , Design

Effect of Partial Admission and Swirl Brakes on Destabilization Force of Labyrinth Gas Seal

Makoto Iwasaki, Rimpei Kawashita, Naoto Omura, Kazuyuki Matsumoto, Kenichi Murata, Ryokichi Hombo

GT 2020; V10AT25A003doi:https://doi.org/10.1115/GT2020-14155

Abstract

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Topics: Brakes

Gas Labyrinth Seals: Improved Prediction of Leakage in Gas Labyrinth Seals Using an Updated Kinetic Energy Carry-Over Coefficient

Tingcheng Wu, Luis San Andrés

GT 2020; V10AT25A004doi:https://doi.org/10.1115/GT2020-14167

Abstract

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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

Luis San Andrés, Xueliang Lu, Bonjin Koo, Scott Tran

GT 2020; V10AT25A005doi:https://doi.org/10.1115/GT2020-14182

Abstract

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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

Nuntaphong Koondilogpiboon, Tsuyoshi Inoue

GT 2020; V10AT25A006doi:https://doi.org/10.1115/GT2020-14254

Abstract

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Topics: Journal bearings , Nonlinear vibration , Rotors , Bearings , Bifurcation , Disks , Limit cycles , Degrees of freedom , Finite element analysis , Rolling bearings

Effects of Clearance on the Performance of a Labyrinth Seal Under Wet-Gas Conditions

Min Zhang, Dara W. Childs, Dung L. Tran, Hari Shrestha

GT 2020; V10AT25A007doi:https://doi.org/10.1115/GT2020-14267

Abstract

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Topics: Clearances (Engineering) , Leakage

Experimental Study on the Performance of a See-Through Labyrinth Seal With Two-Phase, Mainly-Liquid Mixtures

Min Zhang, Dara W. Childs

GT 2020; V10AT25A008doi:https://doi.org/10.1115/GT2020-14268

Abstract

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Topics: Centrifugal pumps , Clearances (Engineering) , Damping , Flow (Dynamics) , Fluids , Friction , Gas industry , Leakage , Pistons , Pressure

Rotordynamic Performance of the Interlocking Labyrinth Seal With a Tilting Rotor

Wanfu Zhang, Yingfei Wang, Qianlei Gu, Lu Yin, Jian-gang Yang

GT 2020; V10AT25A009doi:https://doi.org/10.1115/GT2020-14314

Abstract

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Topics: Rotors , Cavities , Stability , Flow (Dynamics) , Clearances (Engineering) , Damping , Deformation , Leakage flows , Numerical analysis , Pressure

A Thermo-Hydrodynamic Model for Thermal Energy Flow Management in a (Semi) Floating Ring Bearing System for Automotive Turbochargers

Luis San Andrés, Wonbae Jung, Seong-Ki Hong

GT 2020; V10AT25A010doi:https://doi.org/10.1115/GT2020-14332

Abstract

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Topics: Bearings , Flow (Dynamics) , Thermal energy , Thermohydrodynamics , Turbochargers

The Thermo-Hydrodynamic Analysis of the Plain Journal Bearing With Centered Circumferential Groove: Numerical Simulation vs. Experiment

Guanghui Zhang, Shubo Yu, Zhansheng Liu, Kefan Xu, Yu Li

GT 2020; V10AT25A011doi:https://doi.org/10.1115/GT2020-14364

Abstract

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Topics: Computer simulation , Journal bearings , Thermohydrodynamics , Bearings , Temperature , Clearances (Engineering) , Temperature distribution , Design , Flow (Dynamics) , Sensors

Experimental Investigations on the Pressure Fluctuations in the Sealing Gap of Dry Gas Seals With Embedded Pressure Sensors

Jingjing Luo, Dieter Brillert

GT 2020; V10AT25A012doi:https://doi.org/10.1115/GT2020-14464

Abstract

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Topics: Fluctuations (Physics) , Pressure , Pressure sensors , Sealing (Process) , Test facilities , Computer simulation , Pressure measurement , Compressors , Flow (Dynamics) , Gas flow

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; V10AT25A013doi:https://doi.org/10.1115/GT2020-14718

Abstract

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Topics: Journal bearings , Measurement uncertainty

Matching Design of Active Magnetic Bearing and Elastic Support Vibration Isolator

Yichen Yao, Yixin Su, Tianye Yu, Gexue Ren, Suyuan Yu

GT 2020; V10AT25A014doi:https://doi.org/10.1115/GT2020-14827

Abstract

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Topics: Design , Machinery , Magnetic bearings , Vibration isolators

Validation of RANS Turbulence Models for Labyrinth Seal Flows by Means of Particle Image Velocimetry

Lars Wein, Tim Kluge, Joerg R. Seume, Rainer Hain, Thomas Fuchs, Christian Kähler, Roman Schmierer, Florian Herbst

GT 2020; V10AT25A015doi:https://doi.org/10.1115/GT2020-14885

Abstract

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Topics: Flow (Dynamics) , Particulate matter , Reynolds-averaged Navier–Stokes equations , Turbulence , Cavities , Errors , Turbomachinery , Algebra , Computer simulation , Design

Experimental Investigation on the Rubbing Process of Labyrinth Seals Considering the Material Combination

Lisa Hühn, Oliver Munz, Corina Schwitzke, Hans-Jörg Bauer

GT 2020; V10AT25A016doi:https://doi.org/10.1115/GT2020-14918

Abstract

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Topics: Design , Engines , Flight , Flow (Dynamics) , Rotors , Stators , Stress , Temperature , Transients (Dynamics) , Turbine blades

Additively Manufactured Compliant Hybrid Gas Thrust Bearing for sCO₂ Turbomachinery: Design and Proof of Concept Testing

Bugra Ertas

GT 2020; V10AT25A017doi:https://doi.org/10.1115/GT2020-14959

Abstract

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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

Bugra Ertas, Keith Gary, Adolfo Delgado

GT 2020; V10AT25A018doi:https://doi.org/10.1115/GT2020-14964

Abstract

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Topics: Additive manufacturing , Fluids , Thrust bearings , Turbomachinery , Stress , Bearings , Pressure , Hydrostatics , Thrust , Deflection

Identification of Dynamic Coefficients of a Five-Pad Tilting Pad Journal Bearing up to Highest Surface Speeds

Philipp Zemella, Thomas Hagemann, Bastian Pfau, Hubert Schwarze

GT 2020; V10AT25A019doi:https://doi.org/10.1115/GT2020-14991

Abstract

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Topics: Journal bearings , Bearings , Stress , Damping , Excitation , Flow (Dynamics) , Stiffness , Rotors , Algorithms , Deflection

Load Influence on Hydrostatic Oil Film Journal Bearing Stiffness Characteristics

Leonid Moroz, Leonid Romanenko, Roman Kochurov, Evgen Kashtanov

GT 2020; V10AT25A020doi:https://doi.org/10.1115/GT2020-15008

Abstract

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Topics: Bearings , Damping , Hydrostatics , Journal bearings , Stiffness , Stress

Experimental Evaluation of 200mm Hybrid Air Foil Bearing Aimed for MW Scale Turbomachinery

Daejong Kim, Nguyen LaTray, Srikanth Honavara-Prasad

GT 2020; V10AT25A021doi:https://doi.org/10.1115/GT2020-15042

Abstract

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Topics: Foil bearings , Scaling laws (Mathematical physics) , Stress , Turbomachinery

Static Performance of a Hydrostatic Thrust Foil Bearing for Large Scale Oil-Free Turbomachines

Nguyen LaTray, Daejong Kim, Myongsok Song

GT 2020; V10AT25A022doi:https://doi.org/10.1115/GT2020-15056

Abstract

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Topics: Foil bearings , Hydrostatics , Stress , Thrust , Turbomachinery

Design of a Compact Magnetically Levitated Blower for Space Applications

Larry Hawkins, Alexei Filatov, Rasish Khatri, Chris DellaCorte, S. Adam Howard

GT 2020; V10AT25A023doi:https://doi.org/10.1115/GT2020-15090

Abstract

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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

Aoshuang Ding, Xuesong Li

GT 2020; V10AT25A024doi:https://doi.org/10.1115/GT2020-15151

Abstract

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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

Thomas Kerr, Adolfo Delgado

GT 2020; V10AT25A025doi:https://doi.org/10.1115/GT2020-15467

Abstract

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Topics: Thrust , Cavitation , Stress , Turbulence , Computational fluid dynamics , Modeling , Pressure , Algorithms , Bearings , Compressors

Squeeze Film Damper Bearing With Double-Ended Beam Springs: Part II — Experimental Validation

Wei Li, Christopher Braman, Brian Hantz, Manish Thorat, Brian Pettinato

GT 2020; V10AT25A026doi:https://doi.org/10.1115/GT2020-15491

Abstract

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Topics: Bearings , Dampers , Fatigue testing , Modal analysis , Rotors , Springs

A General-Purpose Test Facility for Evaluating Gas Lubricated Thrust Bearings

Keith Gary, Bugra Ertas, Adolfo Delgado

GT 2020; V10AT25A027doi:https://doi.org/10.1115/GT2020-15520

Abstract

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Topics: Test facilities , Thrust bearings , Bearings , Fluids , Design , Gas turbines , Hydrostatics , Lubricants , Stress , Testing

Influence of Coating Technologies on Frictional Properties of Foil Bearings During Start/Stop Conditions

Azzedine Dadouche, Qi Yang, Daejong Kim

GT 2020; V10AT25A028doi:https://doi.org/10.1115/GT2020-15662

Abstract

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Topics: Coatings , Foil bearings , Bearings , Friction , Molybdenum , Thermocouples , Titanium , Torque , Accelerometers , Aluminum

A Novel Controlled-Motion Test Rig to Evaluate Effect of Synchronous and Subsynchronous Lateral Vibration on Reliability and Performance of Mechanical Seals in Pumps

Clay S. Norrbin, Adolfo Delgado

GT 2020; V10AT25A029doi:https://doi.org/10.1115/GT2020-15749

Abstract

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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

ZeDa Dong, Cheng Cheng, Fangcheng Xu

GT 2020; V10AT25A030doi:https://doi.org/10.1115/GT2020-15779

Abstract

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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

Manish R. Thorat, Hanxiang Jin, Brian Pettinato

GT 2020; V10AT25A031doi:https://doi.org/10.1115/GT2020-15820

Abstract

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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

Oliver Munz, Lisa Hühn, Corina Schwitzke, Hans-Jörg Bauer, Tim Fischer, Sonun Ulan kyzy

GT 2020; V10AT25A032doi:https://doi.org/10.1115/GT2020-15935

Abstract

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Topics: Honeycomb structures , Wear , Flow (Dynamics) , Leakage , Optimization , Rotors , Sealing (Process) , Service life (Equipment) , Stators , Stress

A Computational Model for the Analysis of the Static Forced Performance of Self-Equalizing Tilting Pad Thrust Bearings

Rasool Koosha, Luis San Andrés

GT 2020; V10AT25A033doi:https://doi.org/10.1115/GT2020-16060

Abstract

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Topics: Computer simulation , Thrust bearings

Rolling Bearing Parametric Excitation of a Jeffcott Rotor System

Ghasem Ghannad Tehrani, Chiara Gastaldi, Teresa Maria Berruti

GT 2020; V10AT25A034doi:https://doi.org/10.1115/GT2020-16148

Abstract

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Topics: Excitation , Rolling bearings , Rotors

On the Effect of Supplied Flow Rate to the Performance of a Tilting-Pad Journal Bearing: Static Load and Dynamic Force Measurements

Luis San Andrés, Hardik Jani, Hussain Kaizar, Manish Thorat

GT 2020; V10AT25A035doi:https://doi.org/10.1115/GT2020-16215

Abstract

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Topics: Flow (Dynamics) , Force measurement , Journal bearings , Lubrication , Stress

Numerical Investigation on the Static and Rotordynamic Characteristics for Two Types of Novel Mixed Helical Groove Seals

Zhi Fang, Zhigang Li, Jun Li, Zhenping Feng

GT 2020; V10AT25A036doi:https://doi.org/10.1115/GT2020-16303

Abstract

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Topics: Bearings , Cavities , Computational fluid dynamics , Dampers , Damping , Deformation , Drag (Fluid dynamics) , Energy dissipation , Fluids , High pressure (Physics)