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Proceedings Papers

Validation of Transition Prediction of Baseline and High-Lift Airfoils in a Low Speed Cascade

Mary K. Jennerjohn Christianer, Bao Q. Nguyen, Daniel Rogers, Dietmar Giebert, Hakan Aksoy, Christopher R. Marks, Nathan J. Fletcher, John P. Clark
Proc. ASME. GT2024, Volume 12B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V12BT30A023, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-125253
https://doi.org/10.1115/GT2024-125253
View Paper titled, Validation of Transition Prediction of Baseline and High-Lift Airfoils in a Low Speed Cascade
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Topics: Airfoils, Cascades (Fluid dynamics), Pressure, Turbines, Reynolds number, Suction, Particle image velocimetry, Turbulence, Design, Engineering simulation
Proceedings Papers

Experimental Evaluation of High Lift, High Work LPT Blades in a Transonic Cascade

Ryan R. Sauder, Mitch Wolff, Gloria E. Savela, Geoffrey B. Norris, Andrew T. Lethander, Natalia A. Posada, John P. Clark
Proc. ASME. GT2024, Volume 12B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V12BT30A020, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-125023
https://doi.org/10.1115/GT2024-125023
View Paper titled, Experimental Evaluation of High Lift, High Work LPT Blades in a Transonic Cascade
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Topics: Airfoils, Blades, Cascades (Fluid dynamics), Pressure, Turbines, Design, Engines, Mach number, Reynolds number, Separation (Technology)
Proceedings Papers

The Onset of Low Reynolds Number Separation in High-Lift High-Work LPT Passages

Christopher R. Marks, Nathan Fletcher, Molly Donovan, John P. Clark
Proc. ASME. GT2024, Volume 12B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V12BT30A015, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124273
https://doi.org/10.1115/GT2024-124273
View Paper titled, The Onset of Low Reynolds Number Separation in High-Lift High-Work LPT Passages
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Topics: Reynolds number, Separation (Technology), Blades, Flow (Dynamics), Pressure, Flow separation, Suction, Turbine blades, Turbines, Aircraft engines
Journal Articles

On the Development of High-Lift, High-Work Low-Pressure Turbines

John P. Clark, Guillermo Paniagua, Beni Cukurel
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. December 2024, 146(12): 121011.
Paper No: TURBO-23-1298
https://doi.org/10.1115/1.4066004
Published Online: August 6, 2024
View Article titled, On the Development of High-Lift, High-Work Low-Pressure Turbines
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Topics: Airfoils, Blades, Cascades (Fluid dynamics), Design, Flow (Dynamics), Flow control, Pressure, Turbines, Reynolds number, Acoustics
Proceedings Papers

On the Development of High Lift, High Work Low-Pressure Turbines

John P. Clark, Guillermo Paniagua, Beni Cukurel
Proc. ASME. GT2023, Volume 13B: Turbomachinery — Axial Flow Turbine Aerodynamics, V13BT30A029, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103164
https://doi.org/10.1115/GT2023-103164
View Paper titled, On the Development of High Lift, High Work Low-Pressure Turbines
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Topics: Airfoils, Pressure, Turbines
Proceedings Papers

LES Modeling of High-Lift High-Work LP Turbine Profiles: Part I: Approach

Michael Ni, Ron-Ho Ni, John P. Clark
Proc. ASME. GT2023, Volume 13B: Turbomachinery — Axial Flow Turbine Aerodynamics, V13BT30A019, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102625
https://doi.org/10.1115/GT2023-102625
View Paper titled, LES Modeling of High-Lift High-Work LP Turbine Profiles: Part I: Approach
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Topics: Modeling, Turbines, Reynolds number, Design, Flow (Dynamics), Turbulence, Engineering simulation, Physics, Pressure, Simulation
Journal Articles

Response of Separated Boundary Layers to Steady and Pulsated Flow Injection

Hunter D. Nowak, Federico Lluesma-Rodriguez, Iman Rahbari, John P. Clark, Guillermo Paniagua
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. June 2023, 145(6): 061001.
Paper No: TURBO-22-1276
https://doi.org/10.1115/1.4056184
Published Online: December 6, 2022
View Article titled, Response of Separated Boundary Layers to Steady and Pulsated Flow Injection
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Topics: Flow (Dynamics), Flow control, Pressure, Separation (Technology), Reynolds-averaged Navier–Stokes equations
Proceedings Papers

Response of Separated Boundary Layers to Steady and Pulsated Flow Injection in Transonic Internal Flows

Hunter D. Nowak, Federico Lluesma-Rodriguez, Iman Rahbari, John P. Clark, Guillermo Paniagua
Proc. ASME. GT2022, Volume 2: Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine, V002T05A021, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83152
https://doi.org/10.1115/GT2022-83152
View Paper titled, Response of Separated Boundary Layers to Steady and Pulsated Flow Injection in Transonic Internal Flows
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Topics: Boundary layers, Flow (Dynamics), Internal flow, Separation (Technology), Computational fluid dynamics, Energy generation, Flight, Flow control, Flow separation, Reynolds number
Proceedings Papers

An Alternate Means to Form Non-Dimensional Products in Dimensional Analysis

John P. Clark
Proc. ASME. GT2022, Volume 5: Education; Electric Power; Fans and Blowers, V005T08A003, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-81558
https://doi.org/10.1115/GT2022-81558
View Paper titled, An Alternate Means to Form Non-Dimensional Products in Dimensional Analysis
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Topics: Dimensional analysis
Journal Articles

Detailed Velocity and Heat Transfer Measurements in an Advanced Gas Turbine Vane Insert Using Magnetic Resonance Velocimetry and Infrared Thermometry

Michael J. Benson, David Bindon, Mattias Cooper, F. Todd Davidson, Benjamin Duhaime, David Helmer, Robert Woodings, Bret P. Van Poppel, Christopher J. Elkins, John P. Clark
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. February 2022, 144(2): 021009.
Paper No: TURBO-21-1113
https://doi.org/10.1115/1.4052310
Published Online: September 29, 2021
View Article titled, Detailed Velocity and Heat Transfer Measurements in an Advanced Gas Turbine Vane Insert Using Magnetic Resonance Velocimetry and Infrared Thermometry
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Topics: Cooling, Flow (Dynamics), Gas turbines, Heat transfer, Magnetic resonance, Temperature, Temperature measurement, Design, Steady state, Impingement cooling
Proceedings Papers

Effects of Trailing Edge Thickness and Blade Loading Distribution on the Aerodynamic Performance of Simulated CMC Turbine Blades

Paul W. Giel, Vikram Shyam, Paht Juangphanich, John P. Clark
Proc. ASME. GT2020, Volume 2B: Turbomachinery, V02BT33A028, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15802
https://doi.org/10.1115/GT2020-15802
View Paper titled, Effects of Trailing Edge Thickness and Blade Loading Distribution on the Aerodynamic Performance of Simulated CMC Turbine Blades
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Topics: Blades, Ceramic matrix composites, Turbine blades, Reynolds number, Turbulence, Cascades (Fluid dynamics), Chords (Trusses), Design, Dimensions, Mach number
Proceedings Papers

Detailed Velocity and Heat Transfer Measurements in an Advanced Gas Turbine Vane Insert Using MRV and IR Thermometry

Michael J. Benson, David Bindon, Mattias Cooper, F. Todd Davidson, Benjamin Duhaime, David Helmer, Robert Woodings, Bret P. Van Poppel, Christopher J. Elkins, John P. Clark
Proc. ASME. GT2020, Volume 7A: Heat Transfer, V07AT15A016, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14984
https://doi.org/10.1115/GT2020-14984
View Paper titled, Detailed Velocity and Heat Transfer Measurements in an Advanced Gas Turbine Vane Insert Using MRV and IR Thermometry
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Topics: Gas turbines, Heat transfer, Temperature measurement, Cooling, Flow (Dynamics), Computer simulation, Design, Magnetic resonance, Manufacturing, Measurement uncertainty
Proceedings Papers

Phantom Cooling Effects on Rotor Blade Surface Heat Flux in a Transonic Full Scale 1+1/2 Stage Rotating Turbine

Richard J. Anthony, John Finnegan, John P. Clark
Proc. ASME. GT2020, Volume 7C: Heat Transfer, V07CT13A024, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15836
https://doi.org/10.1115/GT2020-15836
View Paper titled, Phantom Cooling Effects on Rotor Blade Surface Heat Flux in a Transonic Full Scale 1+1/2 Stage Rotating Turbine
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Topics: Blades, Heat flux, Phantom cooling, Rotors, Turbines, Film cooling, High pressure (Physics), Pressure, Air Force, Leakage flows
Proceedings Papers

A Low Reynolds Number Experimental Evaluation of Tubercles on a Low-Pressure Turbine Cascade

Stephen A. Pym, Asad Asghar, William D. E. Allan, John P. Clark
Proc. ASME. GT2019, Volume 2B: Turbomachinery, V02BT40A028, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91699
https://doi.org/10.1115/GT2019-91699
View Paper titled, A Low Reynolds Number Experimental Evaluation of Tubercles on a Low-Pressure Turbine Cascade
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Topics: Cascades (Fluid dynamics), Pressure, Reynolds number, Turbines, Blades, Boundary layers, Engines, Suction, Turbine blades, Aircraft
Journal Articles

Effects of Downstream Vane Bowing and Asymmetry on Unsteadiness in a Transonic Turbine

John P. Clark, Richard J. Anthony, Michael K. Ooten, John M. Finnegan, P. Dean Johnson, Ron-Ho Ni
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. October 2018, 140(10): 101006.
Paper No: TURBO-18-1160
https://doi.org/10.1115/1.4040998
Published Online: September 28, 2018
View Article titled, Effects of Downstream Vane Bowing and Asymmetry on Unsteadiness in a Transonic Turbine
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Topics: Airfoils, Blades, Design, Pressure, Shock (Mechanics), Suction, Turbines, Simulation
Proceedings Papers

Effects of Downstream Vane Bowing and Asymmetry on Unsteadiness in a Transonic Turbine

John P. Clark, Richard J. Anthony, Michael K. Ooten, John M. Finnegan, P. Dean Johnson, Ron-Ho Ni
Proc. ASME. GT2018, Volume 2A: Turbomachinery, V02AT45A029, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76735
https://doi.org/10.1115/GT2018-76735
View Paper titled, Effects of Downstream Vane Bowing and Asymmetry on Unsteadiness in a Transonic Turbine
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Topics: Turbines, Blades, Design, Shock (Mechanics), Turbine blades, Airfoils, Annulus, Cycles, Engineering simulation, Gas turbines
Journal Articles

The Effect of Manufacturing Variations on Unsteady Interaction in a Transonic Turbine

John P. Clark, Joseph A. Beck, Alex A. Kaszynski, Angela Still, Ron-Ho Ni
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. May 2018, 140(6): 061007.
Paper No: TURBO-17-1197
https://doi.org/10.1115/1.4039361
Published Online: April 30, 2018
View Article titled, The Effect of Manufacturing Variations on Unsteady Interaction in a Transonic Turbine
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Topics: Airfoils, Blades, Computational fluid dynamics, Geometry, Manufacturing, Pressure, Turbines, Shock (Mechanics), Wheels, Design
Proceedings Papers

The Effect of Manufacturing Variations on Unsteady Interaction in a Transonic Turbine

John P. Clark, Joseph A. Beck, Alex A. Kaszynski, Angela Still, Ron-Ho Ni
Proc. ASME. GT2017, Volume 2B: Turbomachinery, V02BT41A029, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64075
https://doi.org/10.1115/GT2017-64075
View Paper titled, The Effect of Manufacturing Variations on Unsteady Interaction in a Transonic Turbine
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Topics: Manufacturing, Turbines, Computational fluid dynamics, Blades, Geometry, Turbine blades, Airfoils, Algorithms, Artificial neural networks, Casting
Journal Articles

Unsteady Aerodynamic Interaction in a Closely Coupled Turbine Consistent With Contrarotation

Michael K. Ooten, Richard J. Anthony, Andrew T. Lethander, John P. Clark
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. June 2016, 138(6): 061004.
Paper No: TURBO-15-1259
https://doi.org/10.1115/1.4032284
Published Online: February 9, 2016
View Article titled, Unsteady Aerodynamic Interaction in a Closely Coupled Turbine Consistent With Contrarotation
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Topics: Blades, Pressure, Shock (Mechanics), Turbines, Computational fluid dynamics, Suction, Flow (Dynamics)
Proceedings Papers

Unsteady Aerodynamic Interaction in a Closely-Coupled Turbine Consistent With Contra-Rotation

Michael K. Ooten, Richard J. Anthony, Andrew T. Lethander, John P. Clark
Proc. ASME. GT2015, Volume 2C: Turbomachinery, V02CT44A007, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-42416
https://doi.org/10.1115/GT2015-42416
View Paper titled, Unsteady Aerodynamic Interaction in a Closely-Coupled Turbine Consistent With Contra-Rotation
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Topics: Rotation, Turbines, Numerical analysis, Blades, Pressure, Annulus, Cascades (Fluid dynamics), Flow (Dynamics), Computational fluid dynamics, Fourier transforms