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Luis San Andres
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Journal Articles

Effect of Reduced Oil Flow Rate on the Performance of a Load on Pad Journal Bearing: Flooded Versus Evacuated Conditions

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Luis San Andrés, Zihan Ouyang, Yudi Qin
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2024, 146(4): 041004.
Paper No: GTP-23-1428
https://doi.org/10.1115/1.4063686
Published Online: December 6, 2023
View Articletitled, Effect of Reduced Oil Flow Rate on the Performance of a Load on Pad Journal Bearing: Flooded Versus Evacuated Conditions
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Journal Articles

Leakage and Rotordynamic Force Coefficients of a Labyrinth Seal and a Pocket Damper Seal Operating With Wet Gas

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Jose Torres, Luis San Andrés
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2024, 146(3): 031016.
Paper No: GTP-23-1407
https://doi.org/10.1115/1.4063551
Published Online: November 28, 2023
View Articletitled, Leakage and Rotordynamic Force Coefficients of a Labyrinth Seal and a Pocket Damper Seal Operating With Wet Gas
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Topics: Dampers, Damping, Leakage, Pressure, Wireless power transfer, Clearances (Engineering), Stiffness, Flow (Dynamics), Uncertainty, Cavities
Journal Articles

Measurement of Temperature and Load Versus 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, Juan Jauregui, Oscar de Santiago, Daniel Lubell
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2024, 146(3): 031004.
Paper No: GTP-23-1382
https://doi.org/10.1115/1.4063545
Published Online: November 3, 2023
View Articletitled, Measurement of Temperature and Load Versus Bearing Displacement in a Thrust Foil Bearing: Differences Between Light Load and High Load Operation
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Topics: Bearings, Foil bearings, Stress, Thrust
Journal Articles

Dynamic Forced Performance of an O-Rings Sealed Squeeze Film Damper Lubricated With a Low Supply Pressure and a Simple Method to Quantify Air Ingestion

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Bryan Rodríguez, Luis San Andrés
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2024, 146(2): 021004.
Paper No: GTP-23-1377
https://doi.org/10.1115/1.4063320
Published Online: October 25, 2023
View Articletitled, Dynamic Forced Performance of an O-Rings Sealed Squeeze Film Damper Lubricated With a Low Supply Pressure and a Simple Method to Quantify Air Ingestion
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Topics: Dampers, Damping, Pressure, Seals, Stiffness, Whirls, Lubricants
Journal Articles

Computational Fluid Dynamics Analysis and Experimental Results for the Dynamic Performance of Two Long Smooth Surface Annular Seals Operating With a Liquid in Air Mixture

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Jing Yang, Dung L. Tran, Luis San Andrés
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2023, 145(11): 111012.
Paper No: GTP-23-1307
https://doi.org/10.1115/1.4063309
Published Online: September 29, 2023
View Articletitled, Computational Fluid Dynamics Analysis and Experimental Results for the Dynamic Performance of Two Long Smooth Surface Annular Seals Operating With a Liquid in Air Mixture
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Topics: Computational fluid dynamics, Flow (Dynamics), Stiffness, Damping, Leakage, Clearances (Engineering), Pressure
Journal Articles

Effect of a Reduced Oil Flow Rate on the Static and Dynamic Performance of a Tilting Pad Journal Bearing Running in Both the Flooded and Evacuated Conditions

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Luis San Andrés, Andy Alcantar
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2023, 145(6): 061012.
Paper No: GTP-22-1468
https://doi.org/10.1115/1.4056535
Published Online: January 17, 2023
View Articletitled, Effect of a Reduced Oil Flow Rate on the Static and Dynamic Performance of a Tilting Pad Journal Bearing Running in Both the Flooded and Evacuated Conditions
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Topics: Bearings, Flow (Dynamics), Stress, Temperature
Journal Articles

Experimental Force Coefficients for a Fully-Partitioned Pocket Damper Seal and Comparison to Other Two Seal Types

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Adolfo Delgado, Luis San Andrés, Jing Yang, Jonathan Thiele
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2023, 145(5): 051019.
Paper No: GTP-22-1478
https://doi.org/10.1115/1.4056347
Published Online: January 10, 2023
View Articletitled, Experimental Force Coefficients for a Fully-Partitioned Pocket Damper Seal and Comparison to Other Two Seal Types
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Topics: Computational fluid dynamics, Dampers, Damping, Excitation, Flow (Dynamics), Leakage, Pressure, Rotors, Stiffness, Stability
Journal Articles

A Model and Experimental Validation for a Piston Rings—Squeeze Film Damper: A Step Toward Quantifying Air Ingestion

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Bonjin Koo, Luis San Andrés
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2023, 145(4): 041012.
Paper No: GTP-22-1403
https://doi.org/10.1115/1.4055712
Published Online: December 13, 2022
View Articletitled, A Model and Experimental Validation for a Piston Rings—Squeeze Film Damper: A Step Toward Quantifying Air Ingestion
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Topics: Dampers, Damping, Pressure, Piston rings, Pistons, Lubricants, Whirls
Journal Articles

Measured Leakage and Rotordynamic Force Coefficients for Two Liquid Annular Seal Configurations: Smooth-Rotor/Grooved-Stator Versus Grooved-Rotor/Smooth-Stator

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Dara W. Childs, Jing Yang, Luis San Andrés, Jose M. Torres Rueda, James Alex Moreland
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2023, 145(3): 031005.
Paper No: GTP-22-1435
https://doi.org/10.1115/1.4055638
Published Online: December 5, 2022
View Articletitled, Measured Leakage and Rotordynamic Force Coefficients for Two Liquid Annular Seal Configurations: Smooth-Rotor/Grooved-Stator Versus Grooved-Rotor/Smooth-Stator
Open the PDF for Measured Leakage and Rotordynamic Force Coefficients for Two Liquid Annular Seal Configurations: Smooth-Rotor/Grooved-Stator Versus Grooved-Rotor/Smooth-Stator in another window
Topics: Leakage, Rotors, Stators, Stiffness, Damping, Pumps
Journal Articles

A Stepped Shaft Labyrinth Seal Verses A Pocket Damper Seal: Leakage and Dynamic Force Coefficients Under Wet Gas Operation

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Jose Torres, Luis San Andrés, Jing Yang
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2023, 145(1): 011006.
Paper No: GTP-22-1390
https://doi.org/10.1115/1.4055665
Published Online: October 19, 2022
View Articletitled, A Stepped Shaft Labyrinth Seal Verses A Pocket Damper Seal: Leakage and Dynamic Force Coefficients Under Wet Gas Operation
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Topics: Clearances (Engineering), Dampers, Damping, Flow (Dynamics), Leakage, Pressure, Stiffness, Computational fluid dynamics, Excitation, Rotors
Journal Articles

A Nonlinear Rotordynamics Model for Automotive Turbochargers Coupled to a Physical Model for A (Semi) Floating Ring Bearing System

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Wonbae Jung, Luis San Andrés, Jungbae Kim
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2022, 144(11): 111002.
Paper No: GTP-22-1275
https://doi.org/10.1115/1.4055365
Published Online: September 20, 2022
View Articletitled, A Nonlinear Rotordynamics Model for Automotive Turbochargers Coupled to a Physical Model for A (Semi) Floating Ring Bearing System
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Topics: Bearings, Rotors, Clearances (Engineering)
Journal Articles

Making Better Swirl Brakes Using Computational Fluid Dynamics: Performance Enhancement From Geometry Variation

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Jing Yang, Luis San Andrés
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2022, 144(2): 021027.
Paper No: GTP-21-1293
https://doi.org/10.1115/1.4051962
Published Online: January 13, 2022
View Articletitled, Making Better Swirl Brakes Using Computational Fluid Dynamics: Performance Enhancement From Geometry Variation
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Topics: Brakes, Computational fluid dynamics, Pressure, Rotors, Geometry, Flow (Dynamics), Fluids
Journal Articles

A Model for Tilting Pad Thrust Bearings Operating With Reduced Flow Rate—Do Benefits Outweigh Risks?

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Rasool Koosha, Luis San Andrés
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2022, 144(2): 021026.
Paper No: GTP-21-1381
https://doi.org/10.1115/1.4052200
Published Online: December 9, 2021
View Articletitled, A Model for Tilting Pad Thrust Bearings Operating With Reduced Flow Rate—Do Benefits Outweigh Risks?
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Topics: Bearings, Flow (Dynamics), Temperature, Stress, Thrust bearings
Journal Articles

Effect of Pad Material, Copper Versus Steel, on the Performance of a Tilting Pad Journal Bearing: Measurements and Predictions

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Luis San Andrés, Hussain Kaizar, Hardik Jani, Manish Thorat
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2022, 144(3): 031001.
Paper No: GTP-21-1411
https://doi.org/10.1115/1.4052430
Published Online: December 3, 2021
View Articletitled, Effect of Pad Material, Copper Versus Steel, on the Performance of a Tilting Pad Journal Bearing: Measurements and Predictions
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Topics: Bearings, Stress, Temperature, Copper, Steel
Journal Articles

An Analytical Two-Phase Flow Model for Prediction of Leakage in Wet Gas Labyrinth Seals and Pocket Damper Seals. Is Simplicity Still Desired?

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Jing Yang, Luis San Andrés
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2021, 143(12): 121016.
Paper No: GTP-21-1296
https://doi.org/10.1115/1.4051916
Published Online: October 12, 2021
View Articletitled, An Analytical Two-Phase Flow Model for Prediction of Leakage in Wet Gas Labyrinth Seals and Pocket Damper Seals. Is Simplicity Still Desired?
Open the PDF for An Analytical Two-Phase Flow Model for Prediction of Leakage in Wet Gas Labyrinth Seals and Pocket Damper Seals. Is Simplicity Still Desired? in another window
Topics: Dampers, Flow (Dynamics), Leakage, Pressure, Two-phase flow, Computational fluid dynamics, Blades, Cavities, Rotors, Clearances (Engineering)
Journal Articles

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

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Luis San Andrés, Jing Yang, Ryan McGowan
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2021, 143(11): 111017.
Paper No: GTP-21-1298
https://doi.org/10.1115/1.4051965
Published Online: October 4, 2021
View Articletitled, 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: Bearings, Stiffness, Stress, Rotors, Pressure, Carbon fibers
Journal Articles

Measurements to Quantify the Effect of a Reduced Flow Rate on the Performance of a Tilting Pad Journal Bearing With Flooded Ends

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Luis San Andrés, Jonathan Toner, Andy Alcantar
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2021, 143(11): 111012.
Paper No: GTP-21-1385
https://doi.org/10.1115/1.4052268
Published Online: September 30, 2021
View Articletitled, Measurements to Quantify the Effect of a Reduced Flow Rate on the Performance of a Tilting Pad Journal Bearing With Flooded Ends
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Topics: Bearings, Flow (Dynamics), Stress, Temperature, Lubricants
Journal Articles

On the Experimental Dynamic Force Performance of a Squeeze Film Damper Supplied Through a Check Valve and Sealed With O-Rings

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Luis San Andrés, Bryan Rodríguez
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2021, 143(11): 111011.
Paper No: GTP-21-1380
https://doi.org/10.1115/1.4051964
Published Online: September 30, 2021
View Articletitled, On the Experimental Dynamic Force Performance of a Squeeze Film Damper Supplied Through a Check Valve and Sealed With O-Rings
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Topics: Dampers, Damping, Lubricants, Pressure, Seals, Stiffness, Valves, Stress
Journal Articles

On the Leakage and Dynamic Force Coefficients of a Novel Stepped Shaft Pocket Damper Seal: Experimental and Numerical Verification

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Jing Yang, Luis San Andrés, Xueliang Lu
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2021, 143(3): 031002.
Paper No: GTP-20-1432
https://doi.org/10.1115/1.4048459
Published Online: February 8, 2021
View Articletitled, On the Leakage and Dynamic Force Coefficients of a Novel Stepped Shaft Pocket Damper Seal: Experimental and Numerical Verification
Open the PDF for On the Leakage and Dynamic Force Coefficients of a Novel Stepped Shaft Pocket Damper Seal: Experimental and Numerical Verification in another window
Topics: Clearances (Engineering), Computational fluid dynamics, Dampers, Damping, Leakage, Pressure, Rotors, Manufacturing, Flow (Dynamics), Stiffness
Journal Articles

On the Effect of Clearance on the Leakage and Cavity Pressures in an Interlocking Labyrinth Seal Operating With and Without Swirl Brakes: Experiments and Predictions

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Luis San Andrés, Jing Yang, Rimpei Kawashita
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2021, 143(3): 031003.
Paper No: GTP-20-1433
https://doi.org/10.1115/1.4048777
Published Online: February 8, 2021
View Articletitled, On the Effect of Clearance on the Leakage and Cavity Pressures in an Interlocking Labyrinth Seal Operating With and Without Swirl Brakes: Experiments and Predictions
Open the PDF for On the Effect of Clearance on the Leakage and Cavity Pressures in an Interlocking Labyrinth Seal Operating With and Without Swirl Brakes: Experiments and Predictions in another window
Topics: Brakes, Cavities, Clearances (Engineering), Flow (Dynamics), Leakage, Pressure, Rotors