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Proceedings Papers

Combined Effects of Fluid Inertia and Gas Rarefaction on The Performance of Textured Gas Bearings

Kefan Xu, Guanghui Zhang, Yiken Lu, Jiazhen Han, Zhongwen Huang, Wenjie Gong
Proc. ASME. GT2024, Volume 10A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing, V10AT22A008, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124993
https://doi.org/10.1115/GT2024-124993
View Paper titled, Combined Effects of Fluid Inertia and Gas Rarefaction on The Performance of Textured Gas Bearings
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Topics: Fluids, Gas bearings, Inertia (Mechanics), Journal bearings, Texture (Materials), Clearances (Engineering), Slip flow, Algorithms, Design, Finite difference methods
Proceedings Papers

Design Strategy of Thrust Gas Bearings for Refrigerant Compressors Considering Effects of Centrifugal Force and Convective Inertia

Arvind Prabhakar, Daejong Kim
Proc. ASME. GT2024, Volume 10A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing, V10AT22A011, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-126107
https://doi.org/10.1115/GT2024-126107
View Paper titled, Design Strategy of Thrust Gas Bearings for Refrigerant Compressors Considering Effects of Centrifugal Force and Convective Inertia
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Topics: Centrifugal force, Compressors, Computational fluid dynamics, Design, Gas bearings, Inertia (Mechanics), Refrigerants, Thrust, Turbulence
Proceedings Papers

A Thermal Model for a Hybrid Gas Bearing System in Oil-Free Turbochargers

Wonbae Jung, Adolfo Delgado, Anthony Dudlo, Sang-Guk Kang, Chol-Bum M. Kweon
Proc. ASME. GT2024, Volume 10A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing, V10AT22A010, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-125903
https://doi.org/10.1115/GT2024-125903
View Paper titled, A Thermal Model for a Hybrid Gas Bearing System in Oil-Free Turbochargers
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Topics: Gas bearings, Thermal energy transport, Thermohydrodynamics, Turbochargers
Proceedings Papers

The Role of the Working Fluid and Non-Ideal Thermodynamic Effects on Performance of Gas Lubricated Bearings

Wessel de Waart, Matteo Pini
Proc. ASME. GT2024, Volume 10A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing, V10AT22A017, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-127645
https://doi.org/10.1115/GT2024-127645
View Paper titled, The Role of the Working Fluid and Non-Ideal Thermodynamic Effects on Performance of Gas Lubricated Bearings
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Topics: Bearings, Fluids, Gas bearings, Turbomachinery, Bulk modulus, Machinery, Rotors, Turbines, Vapors, Contamination
Proceedings Papers

Effect of Leading-Edge Inlet Models on the Performance of Gas Bearings Operating in Highly Compressible Flow Regimes

Arvind Prabhakar, Daejong Kim
Proc. ASME. GT2023, Volume 9: Microturbines, Turbochargers, and Small Turbomachines; Oil and Gas Applications, V009T18A008, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102298
https://doi.org/10.1115/GT2023-102298
View Paper titled, Effect of Leading-Edge Inlet Models on the Performance of Gas Bearings Operating in Highly Compressible Flow Regimes
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Topics: Compressible flow, Gas bearings, Navier-Stokes equations, Pressure
Proceedings Papers

Compressor Design for Compact, Highspeed Electric Motors

Sönke Teichel, Ahmet Çokşen, Philipp Handschuh
Proc. ASME. GT2023, Volume 9: Microturbines, Turbochargers, and Small Turbomachines; Oil and Gas Applications, V009T18A001, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-100418
https://doi.org/10.1115/GT2023-100418
View Paper titled, Compressor Design for Compact, Highspeed Electric Motors
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Topics: Compressors, Design, Electric motors, Gas bearings
Proceedings Papers

Effect of Centrifugal Force of Gas Film on the Load Capacity of Thrust Gas Bearing

Daejong Kim
Proc. ASME. GT2023, Volume 11A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics, V11AT22A034, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103950
https://doi.org/10.1115/GT2023-103950
View Paper titled, Effect of Centrifugal Force of Gas Film on the Load Capacity of Thrust Gas Bearing
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Topics: Bearings, Centrifugal force, Gas bearings, Stress, Thrust, Thrust bearings
Proceedings Papers

Identification of Dynamic Force Coefficients for an Additively Manufactured Hermetic Squeeze Film Bearing Support Damper Utilizing a Pass-Through Channel

Bugra Ertas, Keith Gary, Tom Adcock
Proc. ASME. GT2023, Volume 11A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics, V11AT22A038, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-104108
https://doi.org/10.1115/GT2023-104108
View Paper titled, Identification of Dynamic Force Coefficients for an Additively Manufactured Hermetic Squeeze Film Bearing Support Damper Utilizing a Pass-Through Channel
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Topics: Additive manufacturing, Bearings, Dampers, Stiffness, Damping, Design, Fluid structure interaction, Computational fluid dynamics, Dynamic testing (Engineering), Finite element analysis
Proceedings Papers

Test Rig Concept for Evaluating the Performance of a CO 2 Immersed Electromechanical Rotor System Utilizing Gas Bearings: Part-2 Thermal Systems & Flow Loop Design

Rahul A. Bidkar, Uttara Kumar, Xiaohua Zhang, Neelesh Sarawate, John Powers, Nevin M. Anandika, Bugra Ertas
Proc. ASME. GT2023, Volume 12: Supercritical CO2, V012T28A028, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103989
https://doi.org/10.1115/GT2023-103989
View Paper titled, Test Rig Concept for Evaluating the Performance of a CO 2 Immersed Electromechanical Rotor System Utilizing Gas Bearings: Part-2 Thermal Systems & Flow Loop Design
Open the PDF for Test Rig Concept for Evaluating the Performance of a CO 2 Immersed Electromechanical Rotor System Utilizing Gas Bearings: Part-2 Thermal Systems & Flow Loop Design in another window
Topics: Carbon dioxide, Design, Flow (Dynamics), Gas bearings, Machinery, Rotors, Thermal analysis, Thermal systems, Turbomachinery
Proceedings Papers

Test Rig Concept for Evaluating the Performance of a CO 2 Immersed Electro-Mechanical Rotor System Utilizing Gas Bearings: Part-1 Mechanical and Electric Machine Design

Bugra Ertas, John Powers, Keith Gary, Dave Torrey, Joseph Zierer, Peggy Baehmann, Vandana Rallabandi, Tom Adcock, Nevin Anandika, Rahul A. Bidkar
Proc. ASME. GT2023, Volume 12: Supercritical CO2, V012T28A030, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-104093
https://doi.org/10.1115/GT2023-104093
View Paper titled, Test Rig Concept for Evaluating the Performance of a CO 2 Immersed Electro-Mechanical Rotor System Utilizing Gas Bearings: Part-1 Mechanical and Electric Machine Design
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Topics: Carbon dioxide, Gas bearings, Machine design, Rotors, Stress, Design, Rotordynamics, Thrust bearings, Turbomachinery, Bearing design
Proceedings Papers

Parametric Reduced Order Model of a Gas Bearings Supported Rotor

Dimitri Goutaudier, Jürg Schiffmann, Fabio Nobile
Proc. ASME. GT2023, Volume 11B: Structures and Dynamics — Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V11BT26A009, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102519
https://doi.org/10.1115/GT2023-102519
View Paper titled, Parametric Reduced Order Model of a Gas Bearings Supported Rotor
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Topics: Gas bearings, Rotors
Proceedings Papers

Review of Technologies Used in Gas Journal Bearing Test Rigs

Aaron Rimpel, Ali Shakil, Thomas Kerr, Robert Lipham
Proc. ASME. GT2023, Volume 11A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics, V11AT22A031, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103827
https://doi.org/10.1115/GT2023-103827
View Paper titled, Review of Technologies Used in Gas Journal Bearing Test Rigs
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Topics: Gas bearings, Journal bearings
Proceedings Papers

Design and Parameter Identification of a Compliantly Damped Porous Carbon Hybrid Gas Bearing

Suryanarayan Balaji, Adolfo Delgado, Sang-Guk Kang, Chol-Bum M. Kweon
Proc. ASME. GT2023, Volume 11A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics, V11AT22A003, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-100904
https://doi.org/10.1115/GT2023-100904
View Paper titled, Design and Parameter Identification of a Compliantly Damped Porous Carbon Hybrid Gas Bearing
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Topics: Bearings, Carbon, Dampers, Design, Gas bearings, Rotors, Stiffness
Proceedings Papers

High Speed Rotary Atomizer Supported on Porous Type Gas Bearings: Challenges Faced, Operability Demonstration and Load Testing

Vishal Wadhvani, Claude Bazergui, Paul Mehan, Michael Smith, Anthony Michael
Proc. ASME. GT2023, Volume 11A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics, V11AT22A032, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103885
https://doi.org/10.1115/GT2023-103885
View Paper titled, High Speed Rotary Atomizer Supported on Porous Type Gas Bearings: Challenges Faced, Operability Demonstration and Load Testing
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Topics: Gas bearings, Stress, Testing
Proceedings Papers

Design Optimization of a High-Speed Twin-Stage Compressor for Next-Gen Aircraft Environmental Control System

Andrea Giuffre’, Piero Colonna, Matteo Pini
Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT32A019, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-81690
https://doi.org/10.1115/GT2022-81690
View Paper titled, Design Optimization of a High-Speed Twin-Stage Compressor for Next-Gen Aircraft Environmental Control System
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Topics: Aircraft, Compressors, Control systems, Design, Optimization, Compression, Cycles, Fluids, Machinery, Vapors
Proceedings Papers

On the Pneumatic Hammer of Hybrid Gas Bearings: Measurements and Predictions

Hyunsung Jung, Seki Sin, Kyuman Kim, Junwon Heo, Minsoo Wee, Keun Ryu
Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT22A026, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-84146
https://doi.org/10.1115/GT2022-84146
View Paper titled, On the Pneumatic Hammer of Hybrid Gas Bearings: Measurements and Predictions
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Topics: Bearings, Damping, Gas bearings, Hammers
Proceedings Papers

Influence of Ambient Pressure on Measured Stiffness and Damping of Radial Gas Foil Bearings

Jason Wilkes, Steve White
Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT24A001, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-02669
https://doi.org/10.1115/GT2021-02669
View Paper titled, Influence of Ambient Pressure on Measured Stiffness and Damping of Radial Gas Foil Bearings
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Topics: Damping, Foil bearings, Pressure, Stiffness, Bearings, Gas bearings, Gases
Proceedings Papers

Measurements of Static and Dynamic Load Performance of a 102 mm Carbon-Graphite Porous Surface Tilting-Pad Gas Journal Bearing

Luis San Andrés, Rachel Bolen, Jing Yang, Ryan McGowan
Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT24A015, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59131
https://doi.org/10.1115/GT2021-59131
View Paper titled, Measurements of Static and Dynamic Load Performance of a 102 mm Carbon-Graphite Porous Surface Tilting-Pad Gas Journal Bearing
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Topics: Carbon fibers, Gas bearings, Journal bearings, Stress
Proceedings Papers

Stability and Unbalance Analysis of Rigid Rotors Supported by Spiral Groove Bearings: Comparison of Different Approaches

Elia Iseli, Jürg Schiffmann
Proc. ASME. GT2021, Volume 6: Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels; Microturbines, Turbochargers, and Small Turbomachines, V006T19A013, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59513
https://doi.org/10.1115/GT2021-59513
View Paper titled, Stability and Unbalance Analysis of Rigid Rotors Supported by Spiral Groove Bearings: Comparison of Different Approaches
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Topics: Bearings, Rotors, Stability, Compressibility, Gas bearings, Transients (Dynamics), Center of mass, Equations of motion, Excitation, Fluids
Proceedings Papers

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

Keith Gary, Bugra Ertas, Adolfo Delgado
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A027, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15520
https://doi.org/10.1115/GT2020-15520
View Paper titled, A General-Purpose Test Facility for Evaluating Gas Lubricated Thrust Bearings
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Topics: Test facilities, Thrust bearings, Bearings, Fluids, Design, Gas turbines, Hydrostatics, Lubricants, Stress, Testing