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Karen A. Thole
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Journal Articles

IMPACTS OF MATERIAL AND MACHINE ON THE VARIATION OF ADDITIVELY MANUFACTURED COOLING CHANNELS

Accepted Manuscript
Abbigail Altland, Thomas Corbett, Karen A. Thole
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach.
Paper No: TURBO-24-1178
https://doi.org/10.1115/1.4066580
Published Online: September 18, 2024
View Article titled, IMPACTS OF MATERIAL AND MACHINE ON THE VARIATION OF ADDITIVELY MANUFACTURED COOLING CHANNELS
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Topics: Additive manufacturing, Cooling, Heat transfer, Machinery, Turbochargers, Surface roughness, Computerized tomography, Cross section (Physics), Diamonds, Film cooling
Journal Articles

Scaling Heat Transfer and Pressure Losses of Novel Additively Manufactured Rib Designs

Accepted Manuscript
Thomas Corbett, Karen A. Thole
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach.
Paper No: TURBO-24-1197
https://doi.org/10.1115/1.4066581
Published Online: September 18, 2024
View Article titled, Scaling Heat Transfer and Pressure Losses of Novel Additively Manufactured Rib Designs
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Topics: Additive manufacturing, Heat transfer, Pressure, Turbochargers
Journal Articles

GEOMETRIC AND FLOW CHARACTERIZATION OF ADDITIVELY MANUFACTURED TURBINE BLADES WITH DRILLED FILM COOLING HOLES

Accepted Manuscript
Kelsey McCormack, Maria Rozman, Reid A. Berdanier, Karen A. Thole
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach.
Paper No: TURBO-24-1198
https://doi.org/10.1115/1.4066561
Published Online: September 16, 2024
View Article titled, GEOMETRIC AND FLOW CHARACTERIZATION OF ADDITIVELY MANUFACTURED TURBINE BLADES WITH DRILLED FILM COOLING HOLES
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Topics: Additive manufacturing, Film cooling, Flow (Dynamics), Turbine blades, Turbochargers
Journal Articles

Influence of Dilution and Effusion Flows in Generating Variable Inlet Profiles for a High-Pressure Turbine

Accepted Manuscript
Chad Schaeffer, Michael Barringer, Stephen Lynch, Karen A. Thole
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach.
Paper No: TURBO-24-1190
https://doi.org/10.1115/1.4066560
Published Online: September 13, 2024
View Article titled, Influence of Dilution and Effusion Flows in Generating Variable Inlet Profiles for a High-Pressure Turbine
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Topics: Computational fluid dynamics, Flow (Dynamics), Gas turbines, High pressure (Physics), Turbines, Turbochargers, Combustion chambers, Temperature, Cooling, Design
Proceedings Papers

Evaluating Thin-Film Thermocouple Performance on Additively Manufactured Turbine Airfoils

Reid A. Berdanier, Margaret R. Nunn, Justin T. Brumberg, Michael D. Barringer, Scott Fishbone, Karen A. Thole
Proc. ASME. GT2024, Volume 4: Controls, Diagnostics, and Instrumentation, V004T05A017, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124155
https://doi.org/10.1115/GT2024-124155
View Paper titled, Evaluating Thin-Film Thermocouple Performance on Additively Manufactured Turbine Airfoils
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Topics: Additive manufacturing, Airfoils, Thermocouples, Thin films, Turbines, Sensors, Engines, Gas turbines, Hardware, Accuracy and precision
Proceedings Papers

Integration of Cooling Holes Into a Turbine Vane Made Using Additive Manufacturing

Nicholas L. Gailey, Michael D. Barringer, Reid A. Berdanier, Karen A. Thole
Proc. ASME. GT2024, Volume 7: Heat Transfer: Combustors; Heat Transfer: Film Cooling, V007T12A016, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124085
https://doi.org/10.1115/GT2024-124085
View Paper titled, Integration of Cooling Holes Into a Turbine Vane Made Using Additive Manufacturing
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Topics: Additive manufacturing, Cooling, Turbines, Film cooling, Flow (Dynamics), Airfoils, Casting, Computerized tomography, Cross-flow, Engineering prototypes
Proceedings Papers

Dirt Ingestion Impacts on Cooling Within a Double-Walled Combustor Liner

Kyle McFerran, Karen A. Thole, Stephen P. Lynch
Proc. ASME. GT2024, Volume 7: Heat Transfer: Combustors; Heat Transfer: Film Cooling, V007T11A007, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124619
https://doi.org/10.1115/GT2024-124619
View Paper titled, Dirt Ingestion Impacts on Cooling Within a Double-Walled Combustor Liner
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Topics: Combustion chambers, Cooling, Flow (Dynamics), Particulate matter, Heat transfer coefficients, Pressure, Engines, Gas turbines, Heat transfer, Insulation
Proceedings Papers

Influence of Dilution and Effusion Flows in Generating Variable Inlet Profiles for a High-Pressure Turbine

Chad B. Schaeffer, Michael D. Barringer, Stephen P. Lynch, Karen A. Thole
Proc. ASME. GT2024, Volume 7: Heat Transfer: Combustors; Heat Transfer: Film Cooling, V007T11A006, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-123899
https://doi.org/10.1115/GT2024-123899
View Paper titled, Influence of Dilution and Effusion Flows in Generating Variable Inlet Profiles for a High-Pressure Turbine
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Topics: Flow (Dynamics), High pressure (Physics), Turbines, Temperature, Jets, Combustion chambers, Computational fluid dynamics, Shapes, Temperature profiles, Cooling
Proceedings Papers

Geometric and Flow Characterization of Additively Manufactured Turbine Blades With Drilled Film Cooling Holes

Kelsey E. McCormack, Maria Rozman, Reid A. Berdanier, Karen A. Thole
Proc. ASME. GT2024, Volume 7: Heat Transfer: Combustors; Heat Transfer: Film Cooling, V007T12A007, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-122559
https://doi.org/10.1115/GT2024-122559
View Paper titled, Geometric and Flow Characterization of Additively Manufactured Turbine Blades With Drilled Film Cooling Holes
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Topics: Additive manufacturing, Film cooling, Flow (Dynamics), Turbine blades, Blades, Surface roughness, Cooling, Electrical discharge machining, Manufacturing, Casting
Proceedings Papers

Introduction of Axisymmetric Grooves As a Tip Seal Treatment for Small-Core Turbines

Connor J. Wiese, Reid A. Berdanier, Karen A. Thole
Proc. ASME. GT2024, Volume 12B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V12BT30A004, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-121398
https://doi.org/10.1115/GT2024-121398
View Paper titled, Introduction of Axisymmetric Grooves As a Tip Seal Treatment for Small-Core Turbines
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Topics: Turbines, Rotors, Blades, Flow (Dynamics), Architecture, Engines, Gas turbines, Geometry, High pressure (Physics), Leakage
Proceedings Papers

Optimization of Tip Seal Grooves for Aerodynamic and Durability Improvements of Small-Core Turbines

Connor J. Wiese, Reid A. Berdanier, Karen A. Thole
Proc. ASME. GT2024, Volume 12B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V12BT30A017, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124299
https://doi.org/10.1115/GT2024-124299
View Paper titled, Optimization of Tip Seal Grooves for Aerodynamic and Durability Improvements of Small-Core Turbines
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Topics: Durability, Optimization, Turbines, Rotors, Clearances (Engineering), Blades, Design, Gas turbines, Geometry, Heat
Proceedings Papers

A Digital Engineering Analysis of an Additively Manufactured Turbine Vane

Reid A. Berdanier, Leland Tien, Karen A. Thole
Proc. ASME. GT2024, Volume 12C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V12CT32A050, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128894
https://doi.org/10.1115/GT2024-128894
View Paper titled, A Digital Engineering Analysis of an Additively Manufactured Turbine Vane
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Topics: Additive manufacturing, Digital engineering, Turbines, Airfoils, Design, Industrial research, Manufacturing, Architecture, Computational fluid dynamics, Cooling
Proceedings Papers

Scaling Heat Transfer and Pressure Losses of Novel Additively Manufactured Rib Designs

Thomas M. Corbett, Karen A. Thole
Proc. ASME. GT2024, Volume 13: Heat Transfer: General Interest / Additive Manufacturing Impacts on Heat Transfer; Wind Energy, V013T13A010, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-122792
https://doi.org/10.1115/GT2024-122792
View Paper titled, Scaling Heat Transfer and Pressure Losses of Novel Additively Manufactured Rib Designs
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Topics: Additive manufacturing, Heat transfer, Pressure, Surface roughness, Flow (Dynamics), Geometry, Pressure drop, Computerized tomography, Cooling, Design
Proceedings Papers

Thermohydraulic Performance and Flow Structures of Diamond Pyramid Arrays

Thomas M. Corbett, Karen A. Thole
Proc. ASME. GT2024, Volume 13: Heat Transfer: General Interest / Additive Manufacturing Impacts on Heat Transfer; Wind Energy, V013T13A008, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-122539
https://doi.org/10.1115/GT2024-122539
View Paper titled, Thermohydraulic Performance and Flow Structures of Diamond Pyramid Arrays
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Topics: Diamonds, Flow (Dynamics), Heat transfer, Pressure, Surface roughness, Wakes, Additive manufacturing, Design, Friction, Gas turbines
Proceedings Papers

Impacts of Material and Machine on the Variation of Additively Manufactured Cooling Channels

Abbigail Y. Altland, Thomas M. Corbett, Karen A. Thole
Proc. ASME. GT2024, Volume 13: Heat Transfer: General Interest / Additive Manufacturing Impacts on Heat Transfer; Wind Energy, V013T13A007, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-122409
https://doi.org/10.1115/GT2024-122409
View Paper titled, Impacts of Material and Machine on the Variation of Additively Manufactured Cooling Channels
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Topics: Additive manufacturing, Cooling, Machinery, Surface roughness, Heat transfer, Computerized tomography, Design, Diamonds, Fins, Friction
Journal Articles

Evaluation of Adjoint-Optimized Holes—Part I Baseline Performance

Daniel Gutierrez, Christopher Yoon, Michael T. Furgeson, Emma M. Veley, David G. Bogard, Karen A. Thole
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. November 2024, 146(11): 111010.
Paper No: TURBO-22-1271
https://doi.org/10.1115/1.4056390
Published Online: June 27, 2024
View Article titled, Evaluation of Adjoint-Optimized Holes—Part I Baseline Performance
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Topics: Coolants, Cooling, Design, Discharge coefficient, Engines, Film cooling, Flow (Dynamics), Metals, Optimization
Journal Articles

Strategies for High-Accuracy Measurements of Stage Efficiency for a Cooled Turbine

Maria Rozman, Reid A. Berdanier, Michael D. Barringer, Karen A. Thole
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2024, 146(10): 101009.
Paper No: TURBO-23-1338
https://doi.org/10.1115/1.4065374
Published Online: May 8, 2024
View Article titled, Strategies for High-Accuracy Measurements of Stage Efficiency for a Cooled Turbine
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Topics: Flow (Dynamics), Pressure, Temperature, Turbines, Uncertainty, Instrumentation, Cooling, Annulus
Journal Articles

Impacts of Superalloys on the Surface Quality of Additively Manufactured Channels

Thomas M. Corbett, Karen A. Thole, Daniel Ryan, Sudhakar Bollapragada
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. August 2024, 146(8): 081003.
Paper No: TURBO-23-1213
https://doi.org/10.1115/1.4064468
Published Online: March 11, 2024
View Article titled, Impacts of Superalloys on the Surface Quality of Additively Manufactured Channels
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Topics: Additive manufacturing, Alloys, Cooling, Design, Flow (Dynamics), Friction, Heat transfer, Lasers, Nickel alloys, Pressure
Journal Articles

Roughness Related to Cooling Performance of Channels Made Through Additive Manufacturing

Alexander J. Wildgoose, Karen A. Thole, Erika Tuneskog, Lieke Wang
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. May 2024, 146(5): 051008.
Paper No: TURBO-23-1279
https://doi.org/10.1115/1.4064310
Published Online: January 16, 2024
View Article titled, Roughness Related to Cooling Performance of Channels Made Through Additive Manufacturing
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Topics: Friction, Heat transfer, Pressure, Surface roughness, Cooling, Additive manufacturing
Journal Articles

The Effects of Channel Supplies on Overall Film-Cooling Effectiveness

Emma M. Veley, Karen A. Thole, David G. Bogard
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. March 2024, 146(3): 031006.
Paper No: TURBO-23-1289
https://doi.org/10.1115/1.4063927
Published Online: November 16, 2023
View Article titled, The Effects of Channel Supplies on Overall Film-Cooling Effectiveness
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Topics: Cooling, Film cooling, Flow (Dynamics), Coolants