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Proceedings Papers

Laser Powder Bed Fusion Manufactured Hydrostatic Journal Bearings for Turbomachinery: Design and Measurements of Static Load Testing With Air, Water, and Liquid Nitrogen

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Chaeyeon Baek, Hyunsung Jung, Junwon Heo, Kyuman Kim, Keun Ryu
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, V10AT22A029, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129557
https://doi.org/10.1115/GT2024-129557
View Paper titled, Laser Powder Bed Fusion Manufactured Hydrostatic Journal Bearings for Turbomachinery: Design and Measurements of Static Load Testing With Air, Water, and Liquid Nitrogen
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Topics: Bearings, Design, Hydrostatics, Journal bearings, Lasers, Manufacturing, Nitrogen, Stress, Testing, Turbomachinery
Proceedings Papers

Dynamic Response of a Rotor Supported on Hybrid Bearings in Air, Water, and Liquid Nitrogen: Measurements and Comparisons to Predictions

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Howon Yi, Kyuman Kim, Hyunsung Jung, Keun Ryu
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, V10AT22A028, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129423
https://doi.org/10.1115/GT2024-129423
View Paper titled, Dynamic Response of a Rotor Supported on Hybrid Bearings in Air, Water, and Liquid Nitrogen: Measurements and Comparisons to Predictions
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Topics: Bearings, Dynamic response, Hydrostatics, Journal bearings, Nitrogen, Rotors, Water
Proceedings Papers

On the Predicted Effects of Recess Depth and Orifice Diameter on Pneumatic Hammer Instability in Hydrostatic Journal Bearings Using Compressible Fluid and Comparisons With Test Data

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Hyunsung Jung, Kyuman Kim, Keun Ryu
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, V10AT22A027, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129343
https://doi.org/10.1115/GT2024-129343
View Paper titled, On the Predicted Effects of Recess Depth and Orifice Diameter on Pneumatic Hammer Instability in Hydrostatic Journal Bearings Using Compressible Fluid and Comparisons With Test Data
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Topics: Bearings, Fluids, Hammers, Hydrostatics, Journal bearings
Proceedings Papers

Effects of Recess Depth and Orifice Diameter on Pneumatic Hammer Instability in Hydrostatic Thrust Bearings: Analysis and Experimental Validation

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Homin Lim, Kyuman Kim, Keun Ryu
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, V10AT22A020, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128181
https://doi.org/10.1115/GT2024-128181
View Paper titled, Effects of Recess Depth and Orifice Diameter on Pneumatic Hammer Instability in Hydrostatic Thrust Bearings: Analysis and Experimental Validation
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Topics: Bearings, Hammers, Hydrostatics, Thrust bearings
Proceedings Papers

Effect of Air-Liquid Homogeneous Mixture on the Linear Dynamic Characteristics of a Hydrostatic Journal Bearing

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Anthony Voitus, Mihai Arghir, Mohamed-Amine Hassini
Proc. ASME. GT2023, Volume 11A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics, V11AT22A006, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101410
https://doi.org/10.1115/GT2023-101410
View Paper titled, Effect of Air-Liquid Homogeneous Mixture on the Linear Dynamic Characteristics of a Hydrostatic Journal Bearing
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Topics: Bearings, Flow (Dynamics), Hydrostatics, Journal bearings
Proceedings Papers

Experimental Force Coefficients of a Hydrostatic Thrust Bearing and Comparisons to Predictions

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Homin Lim, Keun Ryu
Proc. ASME. GT2023, Volume 11A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics, V11AT22A037, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-104057
https://doi.org/10.1115/GT2023-104057
View Paper titled, Experimental Force Coefficients of a Hydrostatic Thrust Bearing and Comparisons to Predictions
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Topics: Bearings, Fluid films, Hammers, Hydrostatics, Stress, Thrust bearings
Proceedings Papers

On the Performance of Hydrostatic Journal Bearings in Air, Water, and Liquid Nitrogen: Measurements and Predictions

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Hyunsung Jung, Kyuman Kim, Keun Ryu
Proc. ASME. GT2023, Volume 11A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics, V11AT22A036, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-104040
https://doi.org/10.1115/GT2023-104040
View Paper titled, On the Performance of Hydrostatic Journal Bearings in Air, Water, and Liquid Nitrogen: Measurements and Predictions
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Topics: Bearings, Hydrostatics, Journal bearings, Nitrogen, Stress, Water
Proceedings Papers

Design Methodology and Concept Demonstration of Preassembled Additively Manufactured Turbomachinery Systems: Case Study of Turbocharger Based Medical Ventilators

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Acar Çelik, David Linsky, Ron Miezner, Alex Kleiman, Boris Leizeronok, Michael Palman, Sercan Acarer, Beni Cukurel
Proc. ASME. GT2022, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications, V007T18A011, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-81739
https://doi.org/10.1115/GT2022-81739
View Paper titled, Design Methodology and Concept Demonstration of Preassembled Additively Manufactured Turbomachinery Systems: Case Study of Turbocharger Based Medical Ventilators
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Topics: Additive manufacturing, Bearings, Biomedicine, Design methodology, Hydrostatics, Turbochargers, Turbomachinery
Proceedings Papers

Investigation of the Transient Closing Behavior of a Radially Adaptive Seal

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James Lofts, Corina Schwitzke, Hans-Jörg Bauer, Vincent Peltier, Kunyuan Zhou
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, V08AT22A012, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82235
https://doi.org/10.1115/GT2022-82235
View Paper titled, Investigation of the Transient Closing Behavior of a Radially Adaptive Seal
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Topics: Transients (Dynamics), Pressure, Stress, Cycles, Engines, Turbomachinery, Hydrostatics, Leakage, Rotation, Rotors
Proceedings Papers

Additively Manufactured Compliant Hybrid Gas Thrust Bearing for sCO 2 Turbomachinery: Experimental Evaluation and Fluid-Structure Model Predictions

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Bugra Ertas, Keith Gary, Adolfo Delgado
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A018, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14964
https://doi.org/10.1115/GT2020-14964
View Paper titled, Additively Manufactured Compliant Hybrid Gas Thrust Bearing for sCO 2 Turbomachinery: Experimental Evaluation and Fluid-Structure Model Predictions
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Topics: Additive manufacturing, Fluids, Thrust bearings, Turbomachinery, Stress, Bearings, Pressure, Hydrostatics, Thrust, Deflection
Proceedings Papers

Load Influence on Hydrostatic Oil Film Journal Bearing Stiffness Characteristics

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Leonid Moroz, Leonid Romanenko, Roman Kochurov, Evgen Kashtanov
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A020, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15008
https://doi.org/10.1115/GT2020-15008
View Paper titled, Load Influence on Hydrostatic Oil Film Journal Bearing Stiffness Characteristics
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Topics: Bearings, Damping, Hydrostatics, Journal bearings, Stiffness, Stress
Proceedings Papers

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

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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
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

Additively Manufactured Compliant Hybrid Gas Thrust Bearing for sCO 2 Turbomachinery: Design and Proof of Concept Testing

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Bugra Ertas
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A017, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14959
https://doi.org/10.1115/GT2020-14959
View Paper titled, Additively Manufactured Compliant Hybrid Gas Thrust Bearing for sCO 2 Turbomachinery: Design and Proof of Concept Testing
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Topics: Additive manufacturing, Design, Testing, Thrust bearings, Turbomachinery, Bearings, Thrust, Deflection, Stiffness, Clearances (Engineering)
Proceedings Papers

Supercritical CO 2 Tests for Hydrostatic Film Stiffness in Film-Riding Seals

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Deepak Trivedi, Rahul A. Bidkar, Christopher E. Wolfe, Jason Mortzheim
Proc. ASME. GT2019, Volume 9: Oil and Gas Applications; Supercritical CO2 Power Cycles; Wind Energy, V009T38A018, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90975
https://doi.org/10.1115/GT2019-90975
View Paper titled, Supercritical CO 2 Tests for Hydrostatic Film Stiffness in Film-Riding Seals
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Topics: Hydrostatics, Stiffness, Supercritical carbon dioxide, Bearings, Temperature, Computational fluid dynamics, Flow (Dynamics), Fluid films, Fluids, Design
Proceedings Papers

The Influence of Ambient Pressure on the Measured Load Capacity of Bump-Foil and Spiral-Groove Gas Thrust Bearings at Ambient Pressures up to 69 Bar on a Novel High-Pressure Gas Bearing Test Rig

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Jason Wilkes, Ryan Cater, Erik Swanson, Kevin Passmore, Jerry Brady
Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A037, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91735
https://doi.org/10.1115/GT2019-91735
View Paper titled, The Influence of Ambient Pressure on the Measured Load Capacity of Bump-Foil and Spiral-Groove Gas Thrust Bearings at Ambient Pressures up to 69 Bar on a Novel High-Pressure Gas Bearing Test Rig
Open the PDF for The Influence of Ambient Pressure on the Measured Load Capacity of Bump-Foil and Spiral-Groove Gas Thrust Bearings at Ambient Pressures up to 69 Bar on a Novel High-Pressure Gas Bearing Test Rig in another window
Topics: Gas bearings, High pressure (Physics), Pressure, Stress, Thrust bearings, Thrust, Bearings, Failure, Air bearings, Cavities
Proceedings Papers

Flow Induced Dynamics of Plate Seals

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Deepak Trivedi, Bernardo Kerr
Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A025, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90962
https://doi.org/10.1115/GT2019-90962
View Paper titled, Flow Induced Dynamics of Plate Seals
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Topics: Dynamics (Mechanics), Flow (Dynamics), Vibration, Plates (structures), Rotors, Hydrostatics, Pressure drop, Stators, Turbomachinery, Boundary-value problems
Proceedings Papers

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

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Bugra Ertas, Adolfo Delgado
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A036, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76312
https://doi.org/10.1115/GT2018-76312
View Paper titled, Compliant Hybrid Gas Bearing Using Modular Hermetically-Sealed Squeeze Film Dampers
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Topics: Dampers, Gas bearings, Bearings, Damping, Stress, Flow (Dynamics), Testing, Bearing design, Carbon, Cavities
Proceedings Papers

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

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Nico Buchhorn, Sebastian Kukla, Beate Bender, Marc Neumann
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A007, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75256
https://doi.org/10.1115/GT2018-75256
View Paper titled, Tilting-Pad Journal Bearing in Hybrid Operation: A Numerical and Experimental Investigation
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Topics: Journal bearings, Bearings, Deformation, Load bearing capacity, Hydrostatic pressure, Hydrostatics, Turbines, Viscosity, Film thickness, Lubricants
Proceedings Papers

Rotordynamic Performance of Hybrid Air Foil Bearings With Regulated Hydrostatic Injection

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Behzad Zamanian Yazdi, Daejong Kim
Proc. ASME. GT2017, Volume 7A: Structures and Dynamics, V07AT34A012, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63495
https://doi.org/10.1115/GT2017-63495
View Paper titled, Rotordynamic Performance of Hybrid Air Foil Bearings With Regulated Hydrostatic Injection
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Topics: Foil bearings, Hydrostatics, Engineering simulation, Simulation, Bearings, Friction, Rotors, Vibration, Clearances (Engineering), Drag (Fluid dynamics)