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Journal Articles

Revisiting Dimensionless Parameters Quantifying Film Cooling

Chien-Shing Lee, Tom I-P. Shih, Douglas Straub, Justin Weber
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2025, 147(10): 101004.
Paper No: TURBO-24-1389
https://doi.org/10.1115/1.4067931
Published Online: February 28, 2025
View Article titled, Revisiting Dimensionless Parameters Quantifying Film Cooling
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Topics: Cooling, Film cooling, Flow (Dynamics), Discharge coefficient
Proceedings Papers

Computational Study of Additively Manufactured Internally Cooled Airfoils for Industrial Gas Turbine Applications

Matthew Krull, Stephen Lynch, Matthew Searle, Timothy Floyd, Forrest E. Ames, Douglas Straub
Proc. ASME. GT2024, Volume 8: Heat Transfer: Internal Air Systems; Heat Transfer: Internal Cooling; Industrial and Cogeneration, V008T15A009, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-123502
https://doi.org/10.1115/GT2024-123502
View Paper titled, Computational Study of Additively Manufactured Internally Cooled Airfoils for Industrial Gas Turbine Applications
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Topics: Additive manufacturing, Airfoils, Industrial gases, Reynolds-averaged Navier–Stokes equations, Turbines, Cooling, Design, Jets, Turbine blades, Blades
Proceedings Papers

Revisiting Dimensionless Parameters Quantifying Film Cooling

Chien-Shing Lee, Tom I-. P. Shih, Douglas Straub, Justin Weber
Proc. ASME. GT2024, Volume 7: Heat Transfer: Combustors; Heat Transfer: Film Cooling, V007T12A028, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-126110
https://doi.org/10.1115/GT2024-126110
View Paper titled, Revisiting Dimensionless Parameters Quantifying Film Cooling
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Topics: Dimensional analysis, Film cooling
Journal Articles

Effects of Downstream Vortex Generators on Film Cooling a Flat Plate Fed by Crossflow

Douglas Straub, Justin Weber, Arnab Roy, Chien-Shing Lee, Tom I-P. Shih
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. May 2024, 146(5): 051011.
Paper No: TURBO-23-1244
https://doi.org/10.1115/1.4064316
Published Online: January 16, 2024
View Article titled, Effects of Downstream Vortex Generators on Film Cooling a Flat Plate Fed by Crossflow
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Topics: Computational fluid dynamics, Coolants, Cooling, Film cooling, Vortices, Generators, Heat transfer coefficients, Temperature
Proceedings Papers

Effects of Downstream Vortex Generators on Film Cooling a Flat Plate Fed by Crossflow

Douglas Straub, Justin Weber, Arnab Roy, Chien-Shing Lee, Tom I-P. Shih
Proc. ASME. GT2023, Volume 7A: Heat Transfer — Combustors; Film Cooling, V07AT12A011, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102498
https://doi.org/10.1115/GT2023-102498
View Paper titled, Effects of Downstream Vortex Generators on Film Cooling a Flat Plate Fed by Crossflow
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Topics: Film cooling, Flat plates, Generators, Heat transfer coefficients, Vortices
Proceedings Papers

Novel Additively-Manufactured and Internally-Cooled Airfoils for Increasing Small Industrial Gas Turbine Efficiency

Matthew Searle, Arnab Roy, Sridharan Ramesh, Timothy Floyd, Forrest E. Ames, Douglas Straub
Proc. ASME. GT2023, Volume 7B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V07BT15A001, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101006
https://doi.org/10.1115/GT2023-101006
View Paper titled, Novel Additively-Manufactured and Internally-Cooled Airfoils for Increasing Small Industrial Gas Turbine Efficiency
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Topics: Additive manufacturing, Airfoils, Combined heat and power, Cooling, Industrial gases, Turbines
Proceedings Papers

Computational and Experimental Study of Film-Cooling Effectiveness With and Without Downstream Vortex Generators

Chien-Shing Lee, Tom I-P. Shih, Douglas Straub, Justin Weber, Edward Robey
Proc. ASME. GT2022, Volume 6A: Heat Transfer — Combustors; Film Cooling, V06AT12A030, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82675
https://doi.org/10.1115/GT2022-82675
View Paper titled, Computational and Experimental Study of Film-Cooling Effectiveness With and Without Downstream Vortex Generators
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Topics: Film cooling, Generators, Vortices, Flow (Dynamics), Cooling, Heat transfer, Temperature, Computation, Flat plates, Plates (structures)
Proceedings Papers

Investigation of Gas Turbine Internal Cooling Using Supercritical CO2 – Effect of Surface Roughness and Channel Aspect Ratio

Arnab Roy, Matthew Searle, Sridharan Ramesh, Douglas Straub
Proc. ASME. GT2022, Volume 9: Supercritical CO2, V009T28A026, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83319
https://doi.org/10.1115/GT2022-83319
View Paper titled, Investigation of Gas Turbine Internal Cooling Using Supercritical CO2 – Effect of Surface Roughness and Channel Aspect Ratio
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Topics: Cooling, Gas turbines, Supercritical carbon dioxide, Surface roughness, Reynolds number, Additive manufacturing, Computational fluid dynamics, Heat transfer, Flow (Dynamics), Fluids
Journal Articles

Computational and Experimental Study of Film-Cooling Effectiveness With and Without Downstream Vortex Generators

Chien-Shing Lee, Tom I-P. Shih, Douglas Straub, Justin M. Weber, Edward H. Robey
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. February 2023, 145(2): 021007.
Paper No: TURBO-22-1228
https://doi.org/10.1115/1.4055529
Published Online: October 12, 2022
View Article titled, Computational and Experimental Study of Film-Cooling Effectiveness With and Without Downstream Vortex Generators
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Topics: Film cooling, Flow (Dynamics), Temperature, Vortices, Generators, Heat transfer, Cooling
Journal Articles

Investigation of Gas Turbine Internal Cooling Using Supercritical CO 2 —Effect of Surface Roughness and Channel Aspect Ratio

Arnab Roy, Matthew Searle, Sridharan Ramesh, Douglas Straub
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2022, 144(11): 111019.
Paper No: GTP-22-1358
https://doi.org/10.1115/1.4055497
Published Online: September 23, 2022
View Article titled, Investigation of Gas Turbine Internal Cooling Using Supercritical CO 2 —Effect of Surface Roughness and Channel Aspect Ratio
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Topics: Computational fluid dynamics, Cooling, Flow (Dynamics), Heat transfer, Reynolds number, Surface roughness, Friction, Simulation, Gas turbines, Sands
Journal Articles

Film Cooling Performance Prediction for Air and Supercritical CO 2

Sridharan Ramesh, Douglas Straub
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. March 2023, 145(3): 031702.
Paper No: JERT-22-1075
https://doi.org/10.1115/1.4055199
Published Online: September 7, 2022
View Article titled, Film Cooling Performance Prediction for Air and Supercritical CO 2
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Topics: Coolants, Film cooling, Density, Cooling, Turbines
Proceedings Papers

Impact on Cycle Efficiency of Small Combined Heat and Power Plants From Increasing Firing Temperature Enabled by Additive Manufacturing of Turbine Blades and Vanes

Selcuk Can Uysal, Douglas Straub, James B. Black
Proc. ASME. GT2021, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy, V007T16A003, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-58718
https://doi.org/10.1115/GT2021-58718
View Paper titled, Impact on Cycle Efficiency of Small Combined Heat and Power Plants From Increasing Firing Temperature Enabled by Additive Manufacturing of Turbine Blades and Vanes
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Topics: Additive manufacturing, Cogeneration plants, Combined heat and power, Cycles, Firing, Gas turbines, Temperature, Turbine blades
Journal Articles

Investigating Gas Turbine Internal Cooling Using Supercritical CO 2 at Higher Reynolds Numbers for Direct Fired Cycle Applications

Matthew Searle, Arnab Roy, James Black, Douglas Straub, Sridharan Ramesh
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. January 2022, 144(1): 011007.
Paper No: TURBO-21-1148
https://doi.org/10.1115/1.4052138
Published Online: September 7, 2021
View Article titled, Investigating Gas Turbine Internal Cooling Using Supercritical CO 2 at Higher Reynolds Numbers for Direct Fired Cycle Applications
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Topics: Cooling, Flow (Dynamics), Friction, Gas turbines, Heat transfer, Reynolds number, Surface roughness, Computational fluid dynamics, Supercritical carbon dioxide, Uncertainty
Journal Articles

State-of-the-Art Cooling Technology for a Turbine Rotor Blade

Jason Town, Douglas Straub, James Black, Karen A. Thole, Tom I-P. Shih
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. July 2018, 140(7): 071007.
Paper No: TURBO-18-1049
https://doi.org/10.1115/1.4039942
Published Online: June 14, 2018
View Article titled, State-of-the-Art Cooling Technology for a Turbine Rotor Blade
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Topics: Blades, Cooling, Design, Film cooling
Proceedings Papers

Investigation of Factors That Contribute to Deposition Formation on Turbine Components in a High-Pressure Combustion Facility

Robert G. Murphy, Andrew C. Nix, Seth A. Lawson, Douglas Straub, Stephen K. Beer
Proc. ASME. GT2013, Volume 3B: Heat Transfer, V03BT13A027, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-94657
https://doi.org/10.1115/GT2013-94657
View Paper titled, Investigation of Factors That Contribute to Deposition Formation on Turbine Components in a High-Pressure Combustion Facility
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Topics: Combustion, High pressure (Physics), Turbine components, Particulate matter, Integrated gasification combined cycle power stations, Temperature, Metals, Pressure, Turbines, Coal
Proceedings Papers

Preliminary Experimental Investigation of the Effects of Particulate Deposition on IGCC Turbine Film-Cooling in a High-Pressure Combustion Facility

Robert G. Murphy, Andrew C. Nix, Seth A. Lawson, Douglas Straub, Stephen K. Beer
Proc. ASME. GT2012, Volume 4: Heat Transfer, Parts A and B, 979-986, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68806
https://doi.org/10.1115/GT2012-68806
View Paper titled, Preliminary Experimental Investigation of the Effects of Particulate Deposition on IGCC Turbine Film-Cooling in a High-Pressure Combustion Facility
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Topics: Combustion, Film cooling, High pressure (Physics), Integrated gasification combined cycle power stations, Particulate matter, Turbines, High temperature, Pressure, Temperature, Combustion gases