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Karen A. Thole
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Journal Articles

Heat Transfer and Pressure Loss of Additively Manufactured Internal Cooling Channels With Various Shapes

Alexander J. Wildgoose, Karen A. Thole
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. July 2023, 145(7): 071011.
Paper No: TURBO-22-1255
DOI: https://doi.org/10.1115/1.4056775
Published Online: February 10, 2023
View Article titled, Heat Transfer and Pressure Loss of Additively Manufactured Internal Cooling Channels With Various Shapes
Click here to open pdf in another window PDF for Heat Transfer and Pressure Loss of Additively Manufactured Internal Cooling Channels With Various Shapes
Topics: Friction, Heat transfer, Pressure, Shapes, Surface roughness, Reynolds number, Diamonds
Journal Articles

Effects of Part-to-Part Flow Variations on Overall Effectiveness and Life of Rotating Turbine Blades

Brian F. Knisely, Reid A. Berdanier, Joel H. Wagner, Karen A. Thole, Allan N. Arisi, Charles W. Haldeman
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. June 2023, 145(6): 061016.
Paper No: TURBO-22-1205
DOI: https://doi.org/10.1115/1.4056679
Published Online: February 9, 2023
View Article titled, Effects of Part-to-Part Flow Variations on Overall Effectiveness and Life of Rotating Turbine Blades
Click here to open pdf in another window PDF for Effects of Part-to-Part Flow Variations on Overall Effectiveness and Life of Rotating Turbine Blades
Topics: Blades, Cooling, Flow (Dynamics), Temperature, Manufacturing, Turbine blades
Journal Articles

Printability and Overall Cooling Performance of Additively Manufactured Holes With Inlet and Exit Rounding

Emma M. Veley, Karen A. Thole, Michael T. Furgeson, David G. Bogard
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. March 2023, 145(3): 031017.
Paper No: TURBO-22-1188
DOI: https://doi.org/10.1115/1.4056389
Published Online: January 6, 2023
View Article titled, Printability and Overall Cooling Performance of Additively Manufactured Holes With Inlet and Exit Rounding
Click here to open pdf in another window PDF for Printability and Overall Cooling Performance of Additively Manufactured Holes With Inlet and Exit Rounding
Topics: Cooling, Film cooling, Design, Coolants, Diffusers
Journal Articles

Impacts of Pin Fin Shape and Spacing on Heat Transfer and Pressure Losses

Thomas M. Corbett, Karen A. Thole, Sudhakar Bollapragada
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. May 2023, 145(5): 051014.
Paper No: TURBO-22-1200
DOI: https://doi.org/10.1115/1.4056092
Published Online: December 6, 2022
View Article titled, Impacts of Pin Fin Shape and Spacing on Heat Transfer and Pressure Losses
Click here to open pdf in another window PDF for Impacts of Pin Fin Shape and Spacing on Heat Transfer and Pressure Losses
Topics: Friction, Heat transfer, Pins (Engineering), Pressure, Shapes, Surface roughness, Flow (Dynamics), Diamonds, Additive manufacturing
Journal Articles

EVALUATION OF ADJOINT OPTIMIZED HOLES - PART I BASELINE PERFORMANCE

Accepted Manuscript
Daniel Gutierrez, Christopher Yoon, Michael Furgeson, Emma Veley, David G. Bogard, Karen A. Thole
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach.
Paper No: TURBO-22-1271
DOI: https://doi.org/10.1115/1.4056390
Published Online: December 1, 2022
View Article titled, EVALUATION OF ADJOINT OPTIMIZED HOLES - PART I BASELINE PERFORMANCE
Click here to open pdf in another window PDF for EVALUATION OF ADJOINT OPTIMIZED HOLES - PART I BASELINE PERFORMANCE
Topics: Additive manufacturing, Computation, Coolants, Cooling, Cross-flow, Design, Engines, Film cooling, Flow (Dynamics), Heat transfer
Journal Articles

Predictive Modeling of Local Film-Cooling Flow on a Turbine Rotor Blade

Eric T. DeShong, Reid A. Berdanier, Karen A. Thole
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. April 2023, 145(4): 041014.
Paper No: TURBO-22-1263
DOI: https://doi.org/10.1115/1.4055972
Published Online: November 7, 2022
View Article titled, Predictive Modeling of Local Film-Cooling Flow on a Turbine Rotor Blade
Click here to open pdf in another window PDF for Predictive Modeling of Local Film-Cooling Flow on a Turbine Rotor Blade
Topics: Blades, Coolants, Cooling, Film cooling, Flow (Dynamics), Modeling, Trajectories (Physics), Turbines, Temperature, Testing
Journal Articles

Impacts of the Additive Manufacturing Process on the Roughness of Engine Scale Vanes and Cooling Channels

Alexander J. Wildgoose, Karen A. Thole, Ramesh Subramanian, Lisa Kersting, Anand Kulkarni
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. April 2023, 145(4): 041013.
Paper No: TURBO-22-1160
DOI: https://doi.org/10.1115/1.4055973
Published Online: November 7, 2022
View Article titled, Impacts of the Additive Manufacturing Process on the Roughness of Engine Scale Vanes and Cooling Channels
Click here to open pdf in another window PDF for Impacts of the Additive Manufacturing Process on the Roughness of Engine Scale Vanes and Cooling Channels
Topics: Surface roughness, Cooling, Wall thickness, Machinery, Lasers
Journal Articles

Impact of Ceramic Matrix Composite Topology on Overall Effectiveness

Ryan D. Edelson, Karen A. Thole
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. March 2023, 145(3): 031016.
Paper No: TURBO-22-1262
DOI: https://doi.org/10.1115/1.4055749
Published Online: November 3, 2022
View Article titled, Impact of Ceramic Matrix Composite Topology on Overall Effectiveness
Click here to open pdf in another window PDF for Impact of Ceramic Matrix Composite Topology on Overall Effectiveness
Topics: Ceramic matrix composites, Film cooling, Flow (Dynamics), Topology, Coolants, Cooling
Journal Articles

Characterizing Flow Instabilities During Transient Events in the Turbine Rim Seal Cavity

Maria Rozman, Eric T. DeShong, Karen A. Thole, Reid A. Berdanier, Christopher Robak
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. March 2023, 145(3): 031014.
Paper No: TURBO-22-1240
DOI: https://doi.org/10.1115/1.4055748
Published Online: November 3, 2022
View Article titled, Characterizing Flow Instabilities During Transient Events in the Turbine Rim Seal Cavity
Click here to open pdf in another window PDF for Characterizing Flow Instabilities During Transient Events in the Turbine Rim Seal Cavity
Topics: Cavities, Flow (Dynamics), Transients (Dynamics), Temperature, Pressure, Turbines, Wheels
Proceedings Papers

Characterizing Flow Instabilities During Transient Events in the Turbine Rim Seal Cavity

Maria Rozman, Eric T. DeShong, Reid A. Berdanier, Karen A. Thole, Christopher Robak
Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT37A021, June 13–17, 2022
Paper No: GT2022-82664
DOI: https://doi.org/10.1115/GT2022-82664
View Paper titled, Characterizing Flow Instabilities During Transient Events in the Turbine Rim Seal Cavity
Click here to open pdf in another window PDF for Characterizing Flow Instabilities During Transient Events in the Turbine Rim Seal Cavity
Topics: Cavities, Flow instability, Transients (Dynamics), Turbines, Flow (Dynamics), Aircraft engines, Cooling, Cycles, Design, Energy generation
Proceedings Papers

Energy and the University: The Role of Gas Turbines at US Universities and Strategies for Enhancing Energy Literacy

Erica Winegardner, Emma Lemay, Stephen Lynch, Karen A. Thole, Jacqueline O’Connor
Proc. ASME. GT2022, Volume 5: Education; Electric Power; Fans and Blowers, V005T08A006, June 13–17, 2022
Paper No: GT2022-83102
DOI: https://doi.org/10.1115/GT2022-83102
View Paper titled, Energy and the University: The Role of Gas Turbines at US Universities and Strategies for Enhancing Energy Literacy
Click here to open pdf in another window PDF for Energy and the University: The Role of Gas Turbines at US Universities and Strategies for Enhancing Energy Literacy
Topics: Gas turbines
Proceedings Papers

Experimental Investigation Into the Effect of a Ceramic Matrix Composite Surface on Film Cooling

Peter H. Wilkins, Stephen P. Lynch, Karen A. Thole, Tyler Vincent, San Quach, Eleanor Kaufman
Proc. ASME. GT2022, Volume 6A: Heat Transfer — Combustors; Film Cooling, V06AT12A038, June 13–17, 2022
Paper No: GT2022-83109
DOI: https://doi.org/10.1115/GT2022-83109
View Paper titled, Experimental Investigation Into the Effect of a Ceramic Matrix Composite Surface on Film Cooling
Click here to open pdf in another window PDF for Experimental Investigation Into the Effect of a Ceramic Matrix Composite Surface on Film Cooling
Topics: Ceramic matrix composites, Film cooling, Turbulence, Boundary layers, Temperature, Topology, Composite materials, Coolants, Density, Fibers
Proceedings Papers

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
Proc. ASME. GT2022, Volume 6A: Heat Transfer — Combustors; Film Cooling, V06AT12A044, June 13–17, 2022
Paper No: GT2022-83436
DOI: https://doi.org/10.1115/GT2022-83436
View Paper titled, Evaluation of Adjoint Optimized Holes - Part I Baseline Performance
Click here to open pdf in another window PDF for Evaluation of Adjoint Optimized Holes - Part I Baseline Performance
Topics: Additive manufacturing, Computation, Coolants, Cooling, Cross-flow, Design, Engines, Film cooling, Flow (Dynamics), Gas turbines
Proceedings Papers

Impact of Ceramic Matrix Composite Topology on Overall Effectiveness

Ryan D. Edelson, Karen A. Thole
Proc. ASME. GT2022, Volume 6A: Heat Transfer — Combustors; Film Cooling, V06AT12A024, June 13–17, 2022
Paper No: GT2022-82326
DOI: https://doi.org/10.1115/GT2022-82326
View Paper titled, Impact of Ceramic Matrix Composite Topology on Overall Effectiveness
Click here to open pdf in another window PDF for Impact of Ceramic Matrix Composite Topology on Overall Effectiveness
Topics: Ceramic matrix composites, Topology, Coolants, Film cooling, Gas turbines, Additive manufacturing, Ceramic fibers, Ceramics, Convection, Cooling
Proceedings Papers

Development and Evaluation of Shaped Film Cooling Holes Designed for Additive Manufacturing

Michael T. Furgeson, Emma M. Veley, Christopher Yoon, Daniel Gutierrez, David G. Bogard, Karen A. Thole
Proc. ASME. GT2022, Volume 6A: Heat Transfer — Combustors; Film Cooling, V06AT12A041, June 13–17, 2022
Paper No: GT2022-83201
DOI: https://doi.org/10.1115/GT2022-83201
View Paper titled, Development and Evaluation of Shaped Film Cooling Holes Designed for Additive Manufacturing
Click here to open pdf in another window PDF for Development and Evaluation of Shaped Film Cooling Holes Designed for Additive Manufacturing
Topics: Additive manufacturing, Film cooling
Proceedings Papers

Predictive Modelling of Local Film-Cooling Flow on a Turbine Rotor Blade

Eric T. DeShong, Reid A. Berdanier, Karen A. Thole
Proc. ASME. GT2022, Volume 6A: Heat Transfer — Combustors; Film Cooling, V06AT12A027, June 13–17, 2022
Paper No: GT2022-82507
DOI: https://doi.org/10.1115/GT2022-82507
View Paper titled, Predictive Modelling of Local Film-Cooling Flow on a Turbine Rotor Blade
Click here to open pdf in another window PDF for Predictive Modelling of Local Film-Cooling Flow on a Turbine Rotor Blade
Topics: Blades, Film cooling, Flow (Dynamics), Modeling, Rotors, Turbines, Cooling, Testing, Turbine blades, Design
Proceedings Papers

Printability and Overall Cooling Performance of Additively Manufactured Holes With Inlet and Exit Rounding

Emma M. Veley, Karen A. Thole, Michael T. Furgeson, David G. Bogard
Proc. ASME. GT2022, Volume 6A: Heat Transfer — Combustors; Film Cooling, V06AT12A043, June 13–17, 2022
Paper No: GT2022-83313
DOI: https://doi.org/10.1115/GT2022-83313
View Paper titled, Printability and Overall Cooling Performance of Additively Manufactured Holes With Inlet and Exit Rounding
Click here to open pdf in another window PDF for Printability and Overall Cooling Performance of Additively Manufactured Holes With Inlet and Exit Rounding
Topics: Additive manufacturing, Cooling, Design, Film cooling, Surface roughness, Convection, Coolants, Diffusers, Engines, Gas turbines
Proceedings Papers

Effects of Part-to-Part Flow Variations on Overall Effectiveness and Life of Rotating Turbine Blades

Brian F. Knisely, Reid A. Berdanier, Joel H. Wagner, Karen A. Thole, Allan R. Arisi, Charles W. Haldeman
Proc. ASME. GT2022, Volume 6A: Heat Transfer — Combustors; Film Cooling, V06AT12A042, June 13–17, 2022
Paper No: GT2022-83216
DOI: https://doi.org/10.1115/GT2022-83216
View Paper titled, Effects of Part-to-Part Flow Variations on Overall Effectiveness and Life of Rotating Turbine Blades
Click here to open pdf in another window PDF for Effects of Part-to-Part Flow Variations on Overall Effectiveness and Life of Rotating Turbine Blades
Topics: Flow (Dynamics), Turbine blades, Blades, Cooling, Manufacturing, Aircraft engines, Design, Engines, Firing, Flow measurement
Proceedings Papers

Impacts of the Additive Manufacturing Process on the Roughness of Engine Scale Vanes and Cooling Channels

Alexander J. Wildgoose, Karen A. Thole, Ramesh Subramanian, Lisa Kersting, Anand Kulkarni
Proc. ASME. GT2022, Volume 6B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V06BT13A025, June 13–17, 2022
Paper No: GT2022-84063
DOI: https://doi.org/10.1115/GT2022-84063
View Paper titled, Impacts of the Additive Manufacturing Process on the Roughness of Engine Scale Vanes and Cooling Channels
Click here to open pdf in another window PDF for Impacts of the Additive Manufacturing Process on the Roughness of Engine Scale Vanes and Cooling Channels
Topics: Additive manufacturing, Cooling, Engines, Surface roughness, Wall thickness, Computerized tomography, Design, Flow (Dynamics), Heat transfer, Investment casting (Process)
Proceedings Papers

Use of Multiple Tracer Gases to Quantify Vane Trailing Edge Flow Into Turbine Rim Seals

Iván Monge-Concepción, Michael D. Barringer, Reid A. Berdanier, Karen A. Thole, Christopher Robak
Proc. ASME. GT2022, Volume 6B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V06BT14A017, June 13–17, 2022
Paper No: GT2022-83247
DOI: https://doi.org/10.1115/GT2022-83247
View Paper titled, Use of Multiple Tracer Gases to Quantify Vane Trailing Edge Flow Into Turbine Rim Seals
Click here to open pdf in another window PDF for Use of Multiple Tracer Gases to Quantify Vane Trailing Edge Flow Into Turbine Rim Seals
Topics: Flow (Dynamics), Gases, Turbines, Cavities, Engines, Cooling, Air flow, Compressors, Computational fluid dynamics, Disks