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Journal Articles

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
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2024, 146(6): 061008.
Paper No: GTP-23-1425
https://doi.org/10.1115/1.4063781
Published Online: January 4, 2024
View Articletitled, Identification of Dynamic Force Coefficients for an Additively Manufactured Hermetic Squeeze Film Bearing Support Damper Utilizing a Pass-Through Channel
Open the PDF for Identification of Dynamic Force Coefficients for an Additively Manufactured Hermetic Squeeze Film Bearing Support Damper Utilizing a Pass-Through Channel in another window
Topics: Bearings, Dampers, Damping, Design, Fluid structure interaction, Secondary cells, Stiffness, Additive manufacturing, Flow (Dynamics), Vibration
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
Open the PDF for Identification of Dynamic Force Coefficients for an Additively Manufactured Hermetic Squeeze Film Bearing Support Damper Utilizing a Pass-Through Channel in another window
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 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
Open the PDF for 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 in another window
Topics: Carbon dioxide, Gas bearings, Machine design, Rotors, Stress, Design, Rotordynamics, Thrust bearings, Turbomachinery, Bearing design
Proceedings Papers

Frequency Dependancy of Dynamic Force Coefficients for Hermetic Squeeze Film Dampers Utilizing Fluid-Bounding Flexible Structures

Bugra Ertas, Keith Gary
Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT24A020, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-60007
https://doi.org/10.1115/GT2021-60007
View Paper titled, Frequency Dependancy of Dynamic Force Coefficients for Hermetic Squeeze Film Dampers Utilizing Fluid-Bounding Flexible Structures
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Topics: Dampers, Flexible structures, Fluids, Design, Fluid structure interaction, Computational fluid dynamics, Finite element analysis, Architecture, Bearing design, Computer software
Journal Articles

Additively Manufactured Compliant Hybrid Gas Thrust Bearing for Supercritical Carbon Dioxide Turbomachinery: Experimental Evaluation and Fluid–Structure Model Predictions

Bugra Ertas, Keith Gary, Adolfo Delgado
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2021, 143(8): 081023.
Paper No: GTP-20-1671
https://doi.org/10.1115/1.4050864
Published Online: May 7, 2021
View Articletitled, Additively Manufactured Compliant Hybrid Gas Thrust Bearing for Supercritical Carbon Dioxide Turbomachinery: Experimental Evaluation and Fluid–Structure Model Predictions
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Topics: Bearings, Fluids, Stress, Thrust, Thrust bearings, Turbomachinery, Pressure, Clearances (Engineering), Flow (Dynamics), Supercritical carbon dioxide
Proceedings Papers

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

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

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
Journal Articles

Experimental Rotordynamic Force Coefficients for a Diffusion Bonded Compliant Hybrid Journal Gas Bearing Utilizing Fluid-Filled Hermetic Dampers

Keith Gary, Bugra Ertas
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2020, 142(4): 041008.
Paper No: GTP-19-1373
https://doi.org/10.1115/1.4044643
Published Online: January 29, 2020
View Articletitled, Experimental Rotordynamic Force Coefficients for a Diffusion Bonded Compliant Hybrid Journal Gas Bearing Utilizing Fluid-Filled Hermetic Dampers
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Topics: Bearings, Dampers, Damping, Diffusion (Physics), Gas bearings, Rotors, Stress, Fluids, Excitation, Stiffness
Proceedings Papers

Experimental Rotordynamic Force Coefficients for a Diffusion Bonded Compliant Hybrid Journal Gas Bearing Utilizing Fluid-Filled Hermetic Dampers

Keith Gary, Bugra Ertas
Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A029, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91109
https://doi.org/10.1115/GT2019-91109
View Paper titled, Experimental Rotordynamic Force Coefficients for a Diffusion Bonded Compliant Hybrid Journal Gas Bearing Utilizing Fluid-Filled Hermetic Dampers
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Topics: Dampers, Diffusion (Physics), Fluids, Gas bearings, Bearings, Damping, Excitation, Rotors, Stress, Design
Proceedings Papers

Measurements of the Leakage and Rotordynamic Performance of Interlocking Labyrinth Seals

Keith Gary, Dara W. Childs, Mauricio A. Ramirez
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A025, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75885
https://doi.org/10.1115/GT2018-75885
View Paper titled, Measurements of the Leakage and Rotordynamic Performance of Interlocking Labyrinth Seals
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Topics: Leakage, Cavities, Pressure, Rotors, Stators, Brakes, Damping, Magnetic bearings, Clearances (Engineering), Stability
Proceedings Papers

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

Mauricio Ramirez, Dara Childs, Keith Gary
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A045, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-77131
https://doi.org/10.1115/GT2018-77131
View Paper titled, Development and Validation of Test Rig for Measurements of Leakage and Rotordynamic Performance of Interlocking Labyrinth Seals
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Topics: Leakage, Cavities, Damping, Pressure, Rotors, Stators, Stiffness, Pressure measurement, Turbomachinery, Waves