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Proceedings Papers

Optically Observed Turbulence In Thrust Collars at Low Critical Reynolds Number Including Numerical Predictions

Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT24A026, June 7–11, 2021

Paper No: GT2021-60360

DOI: https://doi.org/10.1115/GT2021-60360

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Topics: Reynolds number, Thrust, Turbulence, Stress, Computational fluid dynamics, Bearings, Flow (Dynamics), Modeling, Particle spin, Rotation

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

J. Eng. Gas Turbines Power. August 2021, 143(8): 081023.

Paper No: GTP-20-1671

DOI: https://doi.org/10.1115/1.4050864

Published Online: May 7, 2021

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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

Paper No: GT2020-14964

DOI: https://doi.org/10.1115/GT2020-14964

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

Proceedings Papers

Novel Approach for Optical Characterization of Thrust Collar Lubricated Area: Experimental and Numerical Results

Thomas Kerr, Adolfo Delgado

Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A025, September 21–25, 2020

Paper No: GT2020-15467

DOI: https://doi.org/10.1115/GT2020-15467

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

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

Paper No: GT2020-15520

DOI: https://doi.org/10.1115/GT2020-15520

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

Proceedings Papers

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

Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A029, September 21–25, 2020

Paper No: GT2020-15749

DOI: https://doi.org/10.1115/GT2020-15749

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Topics: Pumps, Reliability, Vibration, Rotors, Whirls, Flow (Dynamics), Leakage, Mineral oil, Temperature, Clearances (Engineering)

Journal Articles

Novel Approach for Optical Characterization of Thrust Collar Lubricated Area: Experimental and Numerical Results

Thomas Kerr, Adolfo Delgado

J. Eng. Gas Turbines Power. January 2021, 143(1): 011011.

Paper No: GTP-20-1435

DOI: https://doi.org/10.1115/1.4049013

Published Online: January 4, 2021

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Topics: Cavitation, Computational fluid dynamics, Pressure, Stress, Thrust, Finite element analysis, Turbulence, Modeling, Algorithms, Bearings

Journal Articles

Effect of Leakage Flow Path Wear on Axial Thrust in Downhole Electrical Submersible Pump Unit

Abhay Patil, Marie Kasprzyk, Adolfo Delgado, Gerald Morrison

J. Fluids Eng. May 2020, 142(5): 051202.

Paper No: FE-19-1078

DOI: https://doi.org/10.1115/1.4045571

Published Online: February 3, 2020

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Topics: Pumps, Thrust, Wear, Flow (Dynamics), Erosion, Impellers, Leakage flows, Pressure

Proceedings Papers

Predictive Model for Two-Phase Flow Performance of Mixed Flow Pumps

Abhay Patil, Burak Ayyildiz, Sahand Pirouzpanah, Adolfo Delgado, Gerald Morrison

Proc. ASME. AJKFluids2019, Volume 3B: Fluid Applications and Systems, V03BT03A040, July 28–August 1, 2019

Paper No: AJKFluids2019-5486

DOI: https://doi.org/10.1115/AJKFluids2019-5486

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Topics: Flow (Dynamics), Multiphase flow, Pumps, Two-phase flow

Proceedings Papers

Static Stiffness Measurements for a Thrust Collar Used in an Integrally Geared Compressor

Thomas Kerr, Adolfo Delgado, Dara Childs

Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A013, June 17–21, 2019

Paper No: GT2019-90488

DOI: https://doi.org/10.1115/GT2019-90488

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Topics: Compressors, Stiffness, Thrust, Stress, Particle spin, Rotation, Spin (Aerodynamics), Deflection, Cables, Gears

Journal Articles

Extending Classical Friction Loss Modeling to Predict the Viscous Performance of Pumping Devices

Abhay Patil, Wenjie Yin, Rahul Agarwal, Adolfo Delgado, Gerald Morrison

J. Fluids Eng. October 2019, 141(10): 101202.

Paper No: FE-18-1717

DOI: https://doi.org/10.1115/1.4043162

Published Online: April 15, 2019

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Topics: Computational fluid dynamics, Flow (Dynamics), Friction, Pumps, Viscosity, Fluids, Reynolds number, Modeling

Journal Articles

Static and Dynamic Coefficient Measurements for a Thrust Collar Used in an Integrally Geared Compressor

Thomas Kerr, Andrew Crandall, Dara Childs, Adolfo Delgado

J. Eng. Gas Turbines Power. May 2019, 141(5): 051020.

Paper No: GTP-18-1314

DOI: https://doi.org/10.1115/1.4041654

Published Online: March 14, 2019

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Topics: Compressors, Damping, Deflection, Degrees of freedom, Hammers, Rotation, Stiffness, Stress, Test facilities, Thrust

Journal Articles

Dynamic Characterization of a Novel Externally Pressurized Compliantly Damped Gas-Lubricated Bearing With Hermetically Sealed Squeeze Film Damper Modules

Adolfo Delgado, Bugra Ertas

J. Eng. Gas Turbines Power. February 2019, 141(2): 021028.

Paper No: GTP-18-1423

DOI: https://doi.org/10.1115/1.4041311

Published Online: October 16, 2018

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Topics: Bearings, Dampers, Design, Damping, Stiffness, Stress, Rotors

Journal Articles

Hermetically Sealed Squeeze Film Damper for Operation in Oil-Free Environments

Bugra Ertas, Adolfo Delgado

J. Eng. Gas Turbines Power. February 2019, 141(2): 022503.

Paper No: GTP-18-1421

DOI: https://doi.org/10.1115/1.4041520

Published Online: October 15, 2018

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Topics: Dampers, Damping, Cavities, Fluids, Stiffness, Vibration

Journal Articles

Compliant Hybrid Gas Bearing Using Modular Hermetically Sealed Squeeze Film Dampers

Bugra Ertas, Adolfo Delgado

J. Eng. Gas Turbines Power. February 2019, 141(2): 022504.

Paper No: GTP-18-1422

DOI: https://doi.org/10.1115/1.4041310

Published Online: October 15, 2018

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Topics: Bearings, Dampers, Damping, Gas bearings, Flow (Dynamics), Stress, Stiffness

Proceedings Papers

Hermetically Sealed Squeeze Film Damper for Operation in Oil-Free Environments

Bugra Ertas, Adolfo Delgado

Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A035, June 11–15, 2018

Paper No: GT2018-76308

DOI: https://doi.org/10.1115/GT2018-76308

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Topics: Dampers, Damping, Cavitation, Flow (Dynamics), Gas bearings, Stiffness, Clearances (Engineering), Bearings, Cavities, Density

Proceedings Papers

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

Bugra Ertas, Adolfo Delgado

Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A036, June 11–15, 2018

Paper No: GT2018-76312

DOI: https://doi.org/10.1115/GT2018-76312

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Topics: Dampers, Gas bearings, Bearings, Damping, Stress, Flow (Dynamics), Testing, Bearing design, Carbon, Cavities

Proceedings Papers

Static and Dynamic Coefficient Measurements for a Thrust Collar Used in an Integrally Geared Compressor

Thomas Kerr, Andrew Crandall, Dara Childs, Adolfo Delgado

Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A011, June 11–15, 2018

Paper No: GT2018-75335

DOI: https://doi.org/10.1115/GT2018-75335

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Topics: Compressors, Thrust, Stiffness, Stress, Test facilities, Vibration, Damping, Hammers, Machinery, Particle spin

Proceedings Papers

Dynamic Characterization of a Novel Externally Pressurized Compliantly Damped Gas-Lubricated Bearing With Hermetically Sealed Squeeze Film Damper Modules

Adolfo Delgado, Bugra Ertas

Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A050, June 11–15, 2018

Paper No: GT2018-77212

DOI: https://doi.org/10.1115/GT2018-77212

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Topics: Bearings, Dampers, Damping, Design, Rotors, Gas bearings, Metals, Stiffness, Stress, Turbomachinery

Journal Articles

Dynamic Force Coefficients of Hydrostatic Gas Films for Recessed Flat Plates: Experimental Identification and Numerical Predictions

Adolfo Delgado, Bugra Ertas

J. Tribol. November 2018, 140(6): 061703.

Paper No: TRIB-17-1305

DOI: https://doi.org/10.1115/1.4040114

Published Online: May 21, 2018

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Topics: Damping, Excitation, Film thickness, Flat plates, Flow (Dynamics), Hydrostatics, Pressure, Stiffness, Bearings, Leakage

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Journal citation

NARROW

Optically Observed Turbulence In Thrust Collars at Low Critical Reynolds Number Including Numerical Predictions

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

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

Novel Approach for Optical Characterization of Thrust Collar Lubricated Area: Experimental and Numerical Results

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

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

Novel Approach for Optical Characterization of Thrust Collar Lubricated Area: Experimental and Numerical Results

Effect of Leakage Flow Path Wear on Axial Thrust in Downhole Electrical Submersible Pump Unit

Predictive Model for Two-Phase Flow Performance of Mixed Flow Pumps

Static Stiffness Measurements for a Thrust Collar Used in an Integrally Geared Compressor

Extending Classical Friction Loss Modeling to Predict the Viscous Performance of Pumping Devices

Static and Dynamic Coefficient Measurements for a Thrust Collar Used in an Integrally Geared Compressor

Dynamic Characterization of a Novel Externally Pressurized Compliantly Damped Gas-Lubricated Bearing With Hermetically Sealed Squeeze Film Damper Modules

Hermetically Sealed Squeeze Film Damper for Operation in Oil-Free Environments

Compliant Hybrid Gas Bearing Using Modular Hermetically Sealed Squeeze Film Dampers

Hermetically Sealed Squeeze Film Damper for Operation in Oil-Free Environments

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

Static and Dynamic Coefficient Measurements for a Thrust Collar Used in an Integrally Geared Compressor

Dynamic Characterization of a Novel Externally Pressurized Compliantly Damped Gas-Lubricated Bearing With Hermetically Sealed Squeeze Film Damper Modules

Dynamic Force Coefficients of Hydrostatic Gas Films for Recessed Flat Plates: Experimental Identification and Numerical Predictions

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