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Journal Articles

Effect of Flow Distortions on Pin Fins in the Entry Region of Circular Channels

Evan Lundburg, Stephen Lynch, M. Eric Lyall
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. March 2025, 147(3): 031015.
Paper No: TURBO-24-1195
https://doi.org/10.1115/1.4067296
Published Online: December 20, 2024
View Article titled, Effect of Flow Distortions on Pin Fins in the Entry Region of Circular Channels
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Topics: Aircraft, Boundary layers, Engines, Fins, Flow (Dynamics), Heat transfer, Pins (Engineering), Pressure
Journal Articles

Effect of Ceramic Matrix Composites on the Thermal Efficiency of a Power Generation Turbine

Ashrit Tayade, Stephen Lynch
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. May 2025, 147(5): 051011.
Paper No: TURBO-24-1137
https://doi.org/10.1115/1.4067026
Published Online: November 12, 2024
View Article titled, Effect of Ceramic Matrix Composites on the Thermal Efficiency of a Power Generation Turbine
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Topics: Ceramic matrix composites, Coolants, Cooling, Cycles, Temperature, Thermal efficiency, Turbines, Modeling, Compressors, Energy generation
Proceedings Papers

Effect of Flow Distortions on Pin Fins in the Entry Region of Circular Channels

Evan Lundburg, Stephen Lynch, Michael Lyall
Proc. ASME. GT2024, Volume 1: Aircraft Engine, V001T01A020, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-123712
https://doi.org/10.1115/GT2024-123712
View Paper titled, Effect of Flow Distortions on Pin Fins in the Entry Region of Circular Channels
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Topics: Fins, Flow (Dynamics), Heat transfer, Aircraft, Aircraft engines, Boundary layers, Engines, Flight, Heat sinks, Reynolds number
Proceedings Papers

Effect of Ceramic Matrix Composites on the Thermal Efficiency of a Power Generation Turbine

Ashrit Tayade, Stephen Lynch
Proc. ASME. GT2024, Volume 5: Cycle Innovations, V005T06A016, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-125969
https://doi.org/10.1115/GT2024-125969
View Paper titled, Effect of Ceramic Matrix Composites on the Thermal Efficiency of a Power Generation Turbine
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Topics: Ceramic matrix composites, Cooling, Cycles, Energy generation, Thermal efficiency, Turbines
Proceedings Papers

Conjugate Modelling of a Fully Film Cooled Vane at Transonic Conditions

Jacob Swartz, Stephen Lynch, Matthew Krull, Isabella Gayoso
Proc. ASME. GT2024, Volume 7: Heat Transfer: Combustors; Heat Transfer: Film Cooling, V007T12A042, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128219
https://doi.org/10.1115/GT2024-128219
View Paper titled, Conjugate Modelling of a Fully Film Cooled Vane at Transonic Conditions
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Topics: Modeling, Cooling, Temperature, Heat transfer, Flow (Dynamics), Blades, Computational fluid dynamics, Convection, Film cooling, Mach number
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

Entry Region Heat Transfer Augmentation With Pins, Fins, and Turbulators in Circular Channels

Evan Lundburg, Stephen Lynch, Michael Lyall
Proc. ASME. GT2024, Volume 8: Heat Transfer: Internal Air Systems; Heat Transfer: Internal Cooling; Industrial and Cogeneration, V008T15A010, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-123526
https://doi.org/10.1115/GT2024-123526
View Paper titled, Entry Region Heat Transfer Augmentation With Pins, Fins, and Turbulators in Circular Channels
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Topics: Fins, Heat transfer, Pins (Engineering), Boundary layers, Reynolds number, Convection, Heat transfer coefficients, Pressure, Aircraft engines, Entrance region
Journal Articles

Design and Cooling Performance of Additively Manufactured Ceramic Turbine Vanes

Andrew Fox, Stephen Lynch, Jason C. Young, Carl P. Frick, Jennifer Hankins, Kyle Kuhn, Stephan A. Brinckmann, Ray S. Fertig
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. June 2024, 146(6): 061007.
Paper No: TURBO-23-1270
https://doi.org/10.1115/1.4064226
Published Online: January 29, 2024
View Article titled, Design and Cooling Performance of Additively Manufactured Ceramic Turbine Vanes
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Topics: Ceramics, Cooling, Design, Temperature, Turbines, Reynolds number, Additive manufacturing, Airfoils, Coolants, Manufacturing
Proceedings Papers

The Effect of Meter-Diffuser Angular Offset on Film Cooling Hole Adiabatic Effectiveness

Evan Lundburg, Stephen Lynch, Kevin Liu, Hongzhou Xu, Michael Fox
Proc. ASME. GT2023, Volume 7A: Heat Transfer — Combustors; Film Cooling, V07AT12A003, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-100791
https://doi.org/10.1115/GT2023-100791
View Paper titled, The Effect of Meter-Diffuser Angular Offset on Film Cooling Hole Adiabatic Effectiveness
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Topics: Diffusers, Film cooling, Coolants, Flow (Dynamics), Surface roughness, Errors, Geometry, Shapes, Blades, Diffusion (Physics)
Proceedings Papers

Design and Cooling Performance of Additively Manufactured Ceramic Turbine Vanes

Andrew Fox, Stephen Lynch, Jason C. Young, Carl P. Frick, Jennifer Hankins, Kyle Kuhn, Stephan A. Brinckmann, Ray S. Fertig, III
Proc. ASME. GT2023, Volume 7B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V07BT13A017, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-104059
https://doi.org/10.1115/GT2023-104059
View Paper titled, Design and Cooling Performance of Additively Manufactured Ceramic Turbine Vanes
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Topics: Additive manufacturing, Ceramics, Cooling, Design, Turbines, Gas turbines, Industrial ceramics, Manufacturing, Air flow, Aviation
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
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83102
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
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Topics: Gas turbines
Proceedings Papers

The Effect of Diffuser Shape for Film Cooling Holes With Constant Expansion Angles and Area Ratio

Evan Lundburg, Stephen Lynch, Kevin Liu, Hongzhou Xu, Michael Fox
Proc. ASME. GT2022, Volume 6A: Heat Transfer — Combustors; Film Cooling, V06AT12A016, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-81520
https://doi.org/10.1115/GT2022-81520
View Paper titled, The Effect of Diffuser Shape for Film Cooling Holes With Constant Expansion Angles and Area Ratio
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Topics: Diffusers, Film cooling, Shapes, Coolants, Surface roughness, Flow (Dynamics), Cooling, Durability, Gas turbines, High temperature
Journal Articles

Overall Pressure Loss and Heat Transfer Performance of Additively Manufactured Offset Strip Fins Used in Compact Heat Exchangers

David Saltzman, Stephen Lynch
Journal: Journal of Thermal Science and Engineering Applications
Publisher: ASME
Article Type: Research Papers
J. Thermal Sci. Eng. Appl. December 2022, 14(12): 120902.
Paper No: TSEA-21-1613
https://doi.org/10.1115/1.4053929
Published Online: August 24, 2022
View Article titled, Overall Pressure Loss and Heat Transfer Performance of Additively Manufactured Offset Strip Fins Used in Compact Heat Exchangers
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Topics: Additive manufacturing, Fins, Geometry, Heat exchangers, Heat transfer, Strips, Reynolds number, Flow (Dynamics), Metals, Surface roughness
Proceedings Papers

Experimental and Computational Studies on Saltation of Metal Powders Used in Laser Powder Bed Fusion Systems for Metal Additive Manufacturing

Thao Tran-Le, Jiaxuan Wang, Margaret Byron, Stephen Lynch, Robert Kunz
Proc. ASME. IMECE2021, Volume 10: Fluids Engineering, V010T10A003, November 1–5, 2021
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2021-69550
https://doi.org/10.1115/IMECE2021-69550
View Paper titled, Experimental and Computational Studies on Saltation of Metal Powders Used in Laser Powder Bed Fusion Systems for Metal Additive Manufacturing
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Topics: Additive manufacturing, Lasers, Metal powders, Metals
Proceedings Papers

Determining Total Pressure Fields From Velocimetry Measurements in a Transonic Turbine Flowfield

Alexander Rusted, Stephen Lynch
Proc. ASME. GT2021, Volume 2B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V02BT32A009, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59388
https://doi.org/10.1115/GT2021-59388
View Paper titled, Determining Total Pressure Fields From Velocimetry Measurements in a Transonic Turbine Flowfield
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Topics: Pressure, Turbines, Temperature, Flow (Dynamics), Compressible flow, Errors, Momentum, Computational fluid dynamics, Entropy, Film cooling
Journal Articles

Heat Transfer Coefficient Augmentation for a Shaped Film Cooling Hole at a Range of Compound Angles

Shane Haydt, Stephen Lynch
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. May 2021, 143(5): 051012.
Paper No: TURBO-19-1318
https://doi.org/10.1115/1.4046964
Published Online: April 15, 2021
View Article titled, Heat Transfer Coefficient Augmentation for a Shaped Film Cooling Hole at a Range of Compound Angles
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Topics: Coolants, Film cooling, Heat flux, Heat transfer coefficients, Temperature, Vortices, Flow (Dynamics), Heat transfer, Flat plates
Journal Articles

Flow-Field Measurements in a Metal Additively Manufactured Offset Strip Fin Array Using Laser Doppler Velocimetry

David Saltzman, Stephen Lynch
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. April 2021, 143(4): 041502.
Paper No: FE-20-1467
https://doi.org/10.1115/1.4049245
Published Online: January 22, 2021
View Article titled, Flow-Field Measurements in a Metal Additively Manufactured Offset Strip Fin Array Using Laser Doppler Velocimetry
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Topics: Additive manufacturing, Fins, Flow (Dynamics), Geometry, Laser Doppler anemometry, Metals, Reynolds number, Strips, Surface roughness, Turbulence
Proceedings Papers

A Steady Transonic Linear Cascade for True Scale Cooling Measurements

Jeremy Zuccarello, David Saltzman, Stephen Lynch, Shane Haydt, Christopher Whitfield
Proc. ASME. GT2020, Volume 7C: Heat Transfer, V07CT13A001, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14269
https://doi.org/10.1115/GT2020-14269
View Paper titled, A Steady Transonic Linear Cascade for True Scale Cooling Measurements
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Topics: Cascades (Fluid dynamics), Cooling, Airfoils, Lasers, Blades, Flow (Dynamics), Glass, Reynolds number, Boundary layers, Chords (Trusses)
Proceedings Papers

Performance Analysis of Heat Sinks Designed for Additive Manufacturing

Andrew Scott White, David Saltzman, Stephen Lynch
Proc. ASME. InterPACK2020, ASME 2020 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T07A003, October 27–29, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IPACK2020-2532
https://doi.org/10.1115/IPACK2020-2532
View Paper titled, Performance Analysis of Heat Sinks Designed for Additive Manufacturing
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Topics: Additive manufacturing, Heat sinks
Proceedings Papers

Genetic Algorithm Based Topology Optimization of Heat Exchanger Fins Used in Aerospace Applications

Bashir S. Mekki, Joshua Langer, Stephen Lynch
Proc. ASME. IMECE2019, Volume 8: Heat Transfer and Thermal Engineering, V008T09A003, November 11–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2019-10617
https://doi.org/10.1115/IMECE2019-10617
View Paper titled, Genetic Algorithm Based Topology Optimization of Heat Exchanger Fins Used in Aerospace Applications
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Topics: Additive manufacturing, Aerospace industry, Fins, Genetic algorithms, Heat exchangers, Heat transfer, Optimization, Topology