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Proceedings Papers

Experimental Characterization of Darcy Friction Factors of Bump Channel Flows and Application to Cooling Flow Path Design

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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, V10AT22A022, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128199
https://doi.org/10.1115/GT2024-128199
View Paper titled, Experimental Characterization of Darcy Friction Factors of Bump Channel Flows and Application to Cooling Flow Path Design
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Topics: Channel flow, Cooling, Design, Experimental characterization, Flow (Dynamics), Foil bearings, Friction, Gas flow, Turbulence
Proceedings Papers

Performance of Heavily Loaded Textured Gas Foil Bearings Based on the Multigrid Method

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Jiazhen Han, Guanghui Zhang, Kefan Xu, Wenjie Gong, Wenlong Sun, Zhongwen Huang
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, V10AT22A014, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-126255
https://doi.org/10.1115/GT2024-126255
View Paper titled, Performance of Heavily Loaded Textured Gas Foil Bearings Based on the Multigrid Method
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Topics: Foil bearings, Stress, Texture (Materials), Bearings, Algorithms, Equilibrium (Physics), Friction, Journal bearings, Newton's method, Pressure
Proceedings Papers

Tribological Evaluation of Coatings for Air Foil Bearing Applications

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Eleftherios Iakovakis, Sepideh Aliasghari, Philip Bonello, Allan Matthews, Michael Burkinshaw, Simon Moore
Proc. ASME. GT2024, Volume 9: Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications; Steam Turbine, V009T17A003, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-121771
https://doi.org/10.1115/GT2024-121771
View Paper titled, Tribological Evaluation of Coatings for Air Foil Bearing Applications
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Topics: Coatings, Diamond films, Foil bearings, Friction, Lubricants, Tribology
Proceedings Papers

Effect of Tilt on Thermo-Hydrodynamic Model of a Thrust Air Foil Bearing

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Talieh Pourashraf, Philip Bonello, Craig Lancaster
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, V10AT22A004, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-123643
https://doi.org/10.1115/GT2024-123643
View Paper titled, Effect of Tilt on Thermo-Hydrodynamic Model of a Thrust Air Foil Bearing
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Topics: Foil bearings, Modeling, Thermohydrodynamics, Thrust, Thrust bearings, Bearings, Disks, Accounting, Deformation, Heat
Proceedings Papers

Rotordynamics of a Rotor Supported by Foil Bearings Under Various Housing Excitation

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Woongeon Lee, Daejong Kim
Proc. ASME. GT2023, Volume 9: Microturbines, Turbochargers, and Small Turbomachines; Oil and Gas Applications, V009T18A012, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103344
https://doi.org/10.1115/GT2023-103344
View Paper titled, Rotordynamics of a Rotor Supported by Foil Bearings Under Various Housing Excitation
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Topics: Air compressors, Excitation, Foil bearings, Fuel cells, Rotordynamics, Rotors, Simulation
Proceedings Papers

Analytical Study on Hybrid Thrust Foil Bearing, Structural Characterization and Measurement of Static Performance

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Ehiremen Ebewele, Daejong Kim, Jeongpill Ki
Proc. ASME. GT2023, Volume 11A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics, V11AT22A039, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-104282
https://doi.org/10.1115/GT2023-104282
View Paper titled, Analytical Study on Hybrid Thrust Foil Bearing, Structural Characterization and Measurement of Static Performance
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Topics: Foil bearings, Hydrostatic pressure, Stiffness, Stress, Thrust
Proceedings Papers

Measurement of Temperature and Load vs. Bearing Displacement in a Thrust Foil Bearing: Differences Between Light Load and High Load Operation

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Luis San Andrés, Azael Duran-Castillo, Oscar de Santiago, Juan Jauregui, Daniel Lubell
Proc. ASME. GT2023, Volume 11A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics, V11AT22A023, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103154
https://doi.org/10.1115/GT2023-103154
View Paper titled, Measurement of Temperature and Load vs. Bearing Displacement in a Thrust Foil Bearing: Differences Between Light Load and High Load Operation
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Topics: Bearings, Displacement, Foil bearings, Stress, Temperature measurement, Thrust
Proceedings Papers

The Application of the Arbitrary-Order Galerkin Reduction Method to the Dynamic Analysis of a Rotor With a Preloaded Single-Pad Foil-Air Bearing

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Ibrahim Ghalayini, Philip Bonello
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, V08AT22A017, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82585
https://doi.org/10.1115/GT2022-82585
View Paper titled, The Application of the Arbitrary-Order Galerkin Reduction Method to the Dynamic Analysis of a Rotor With a Preloaded Single-Pad Foil-Air Bearing
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Topics: Dynamic analysis, Foil bearings, Rotors, Clearances (Engineering), Delays, Engineering simulation, Simulation, Air bearings, Condensation, Finite element analysis
Proceedings Papers

Development of Oil Free Centrifugal Blower As Enabling Technology for Solid Oxide Fuel Cell Anode Gas Recycling

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Rochelle S. Wooding, Hannah G. Lea, José Luis Córdova
Proc. ASME. GT2022, Volume 5: Education; Electric Power; Fans and Blowers, V005T10A012, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82294
https://doi.org/10.1115/GT2022-82294
View Paper titled, Development of Oil Free Centrifugal Blower As Enabling Technology for Solid Oxide Fuel Cell Anode Gas Recycling
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Topics: Anodes, Foil bearings, Recycling, Solid oxide fuel cells
Proceedings Papers

Theoretical Study on Static Performance of Double-Bump Foil Bearings

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Fangcheng Xu, Jianhua Chu, Wenlin Luan, Guang Zhao
Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT24A019, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59937
https://doi.org/10.1115/GT2021-59937
View Paper titled, Theoretical Study on Static Performance of Double-Bump Foil Bearings
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Topics: Clearances (Engineering), Energy consumption, Foil bearings, Friction, Stiffness, Stress
Proceedings Papers

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

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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

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

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Daejong Kim, Nguyen LaTray, Srikanth Honavara-Prasad
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A021, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15042
https://doi.org/10.1115/GT2020-15042
View Paper titled, Experimental Evaluation of 200mm Hybrid Air Foil Bearing Aimed for MW Scale Turbomachinery
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Topics: Foil bearings, Scaling laws (Mathematical physics), Stress, Turbomachinery
Proceedings Papers

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

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Nguyen LaTray, Daejong Kim, Myongsok Song
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A022, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15056
https://doi.org/10.1115/GT2020-15056
View Paper titled, Static Performance of a Hydrostatic Thrust Foil Bearing for Large Scale Oil-Free Turbomachines
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Topics: Foil bearings, Hydrostatics, Stress, Thrust, Turbomachinery
Proceedings Papers

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

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Azzedine Dadouche, Qi Yang, Daejong Kim
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A028, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15662
https://doi.org/10.1115/GT2020-15662
View Paper titled, Influence of Coating Technologies on Frictional Properties of Foil Bearings During Start/Stop Conditions
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Topics: Coatings, Foil bearings, Bearings, Friction, Molybdenum, Thermocouples, Titanium, Torque, Accelerometers, Aluminum
Proceedings Papers

Theoretical Study on Static Performance of Herringbone Grooved Aerodynamics Foil Bearing

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ZeDa Dong, Cheng Cheng, Fangcheng Xu
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A030, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15779
https://doi.org/10.1115/GT2020-15779
View Paper titled, Theoretical Study on Static Performance of Herringbone Grooved Aerodynamics Foil Bearing
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Topics: Aerodynamics, Foil bearings, Bearings, Energy consumption, Friction, Stress, Pressure, Film thickness, Finite difference methods, Rotation
Proceedings Papers

Thermal Optimization of Air Foil Thrust Bearings Using Different Foil Materials

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Markus Rieken, Marcel Mahner, Bernhard Schweizer
Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A031, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91207
https://doi.org/10.1115/GT2019-91207
View Paper titled, Thermal Optimization of Air Foil Thrust Bearings Using Different Foil Materials
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Topics: Optimization, Thrust bearings, Cooling, Flow (Dynamics), Rotors, Deformation, Disks, Bearings, Dry friction, Flux (Metallurgy)
Proceedings Papers

A New Structural Bump Foil Model With Application From Start-Up to Full Operating Conditions

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Mihai Arghir, Omar Benchekroun
Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A014, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90494
https://doi.org/10.1115/GT2019-90494
View Paper titled, A New Structural Bump Foil Model With Application From Start-Up to Full Operating Conditions
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Topics: Algorithms, Bearings, Errors, Film thickness, Fluid pressure, Foil bearings, Friction, Lubrication, Manufacturing, Rotors
Proceedings Papers

Pressure Profile Measurements Within the Gas Film of Journal Foil Bearings Using an Instrumented Rotor With Telemetry

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K. Shalash, J. Schiffmann
Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A027, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90984
https://doi.org/10.1115/GT2019-90984
View Paper titled, Pressure Profile Measurements Within the Gas Film of Journal Foil Bearings Using an Instrumented Rotor With Telemetry
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Topics: Foil bearings, Pressure, Rotors, Telemetry, Bearings, Probes, Displacement, Fluid films, Journal bearings, Modeling
Proceedings Papers

A Reduced Model for Air Foil Journal Bearings for Time-Efficient Run-Up Simulations

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Pascal Zeise, Marcel Mahner, Marcel Bauer, Markus Rieken, Bernhard Schweizer
Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A004, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90187
https://doi.org/10.1115/GT2019-90187
View Paper titled, A Reduced Model for Air Foil Journal Bearings for Time-Efficient Run-Up Simulations
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Topics: Engineering simulation, Journal bearings, Simulation, Bearings, Foil bearings, Rotors, Computer simulation, Computer software, Finite element analysis, Friction
Proceedings Papers

On the Integration of Hot Foil Bearings Into Gas Turbine Engines: Theoretical Treatment

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Hooshang Heshmat, James F. Walton, II
Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A036, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91710
https://doi.org/10.1115/GT2019-91710
View Paper titled, On the Integration of Hot Foil Bearings Into Gas Turbine Engines: Theoretical Treatment
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Topics: Foil bearings, Gas turbines, Bearings, Stiffness, Design, High temperature, Modeling, Rotors, System dynamics, Damping