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Journal Articles

INFLUENCES OF LASER INCIDENCE ANGLE AND WALL THICKNESS ON ADDITIVE COMPONENTS

Accepted Manuscript
Alexander Wildgoose, Karen A. Thole
Journal: Journal of Turbomachinery
Article Type: Technical Briefs
J. Turbomach.
Paper No: TURBO-23-1040
DOI: https://doi.org/10.1115/1.4062678
Published Online: June 2, 2023
View Article titled, INFLUENCES OF LASER INCIDENCE ANGLE AND WALL THICKNESS ON ADDITIVE COMPONENTS
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Topics: Lasers, Turbochargers, Wall thickness, Cooling, Surface roughness, Additive manufacturing, Design, Film cooling, Friction, Heat transfer
Journal Articles

Roughness-Resolved Large-Eddy Simulation of Additive Manufacturing-Like Channel Flows

Serge Meynet, Alexis Barge, Vincent Moureau, Guillaume Balarac, Ghislain Lartigue, Abdellah Hadjadj
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. August 2023, 145(8): 081013.
Paper No: TURBO-22-1265
DOI: https://doi.org/10.1115/1.4062245
Published Online: May 22, 2023
View Article titled, Roughness-Resolved Large-Eddy Simulation of Additive Manufacturing-Like Channel Flows
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Topics: Surface roughness, Reynolds number, Turbulence, Large eddy simulation, Temperature, Heat transfer
Journal Articles

Experimental Study of Impact of In-Service Deterioration on Aerodynamic Performance of High-Pressure Nozzle Guide Vanes

Mathias Michaud, Dougal Jackson, Frédéric Goenaga, Thomas Povey
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. June 2023, 145(6): 061017.
Paper No: TURBO-21-1259
DOI: https://doi.org/10.1115/1.4056774
Published Online: March 2, 2023
View Article titled, Experimental Study of Impact of In-Service Deterioration on Aerodynamic Performance of High-Pressure Nozzle Guide Vanes
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Topics: Coolants, Film cooling, Flow (Dynamics), Pressure, Surface roughness, Kinetic energy, Nozzle guide vanes, Engines, Spallation (Nuclear physics), High pressure (Physics)
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
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Topics: Friction, Heat transfer, Pressure, Shapes, Surface roughness, Reynolds number, Diamonds
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
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Topics: Friction, Heat transfer, Pins (Engineering), Pressure, Shapes, Surface roughness, Flow (Dynamics), Diamonds, Additive manufacturing
Journal Articles

Experimental Study of Impact of In-Service Deterioration on Thermal Performance of High-Pressure Nozzle Guide Vanes

Mathias Michaud, Nafiz H. K. Chowdhury, Thomas Povey
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. February 2023, 145(2): 021014.
Paper No: TURBO-22-1017
DOI: https://doi.org/10.1115/1.4055864
Published Online: November 7, 2022
View Article titled, Experimental Study of Impact of In-Service Deterioration on Thermal Performance of High-Pressure Nozzle Guide Vanes
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Topics: Coolants, Cooling, Film cooling, Surface roughness, Temperature, Engines, Thermal barrier coatings, Heat transfer
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
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Topics: Surface roughness, Cooling, Wall thickness, Machinery, Lasers
Journal Articles

Amplitude and Wavelength Effects for Wavy Channels

Thomas M. Corbett, Karen A. Thole, Sudhakar Bollapragada
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. March 2023, 145(3): 031011.
Paper No: TURBO-22-1199
DOI: https://doi.org/10.1115/1.4055612
Published Online: October 20, 2022
View Article titled, Amplitude and Wavelength Effects for Wavy Channels
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Topics: Flow (Dynamics), Friction, Heat transfer, Wavelength, Reynolds number, Computational fluid dynamics, Pressure, Surface roughness
Journal Articles

The Modeling of Roughness Effect on the Performance of a Controlled Diffusion Airfoil

Grégory Delvaux, Riccardo Toracchio, Elissavet Boufidi, Emma Croner, Fabrizio Fontaneto
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. February 2023, 145(2): 021008.
Paper No: TURBO-22-1152
DOI: https://doi.org/10.1115/1.4055574
Published Online: October 12, 2022
View Article titled, The Modeling of Roughness Effect on the Performance of a Controlled Diffusion Airfoil
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Topics: Surface roughness
Journal Articles

Profile Loss Reduction of High-Lift Turbine Blades With Rough and Ribbed Surfaces

Ananth Sivaramakrishnan Malathi, Massimiliano Nardini, Aditya Vaid, Nagabhushana Rao Vadlamani, Richard D. Sandberg
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. February 2023, 145(2): 021001.
Paper No: TURBO-22-1214
DOI: https://doi.org/10.1115/1.4055501
Published Online: October 11, 2022
View Article titled, Profile Loss Reduction of High-Lift Turbine Blades With Rough and Ribbed Surfaces
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Topics: Boundary layers, Flow (Dynamics), Pressure gradient, Suction, Surface roughness, Turbulence, Simulation, Skin friction (Fluid dynamics), Turbine blades, Shapes
Journal Articles

Effect of a Ceramic Matrix Composite Surface on Film Cooling

Peter H. Wilkins, Stephen P. Lynch, Karen A. Thole, Tyler Vincent, San Quach, Dominic Mongillo
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. August 2022, 144(8): 081014.
Paper No: TURBO-21-1222
DOI: https://doi.org/10.1115/1.4053842
Published Online: March 4, 2022
View Article titled, Effect of a Ceramic Matrix Composite Surface on Film Cooling
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Topics: Ceramic matrix composites, Computational fluid dynamics, Film cooling, Flow (Dynamics), Heat transfer, Temperature, Reynolds-averaged Navier–Stokes equations, Surface roughness, Coolants
Journal Articles

Calibration of a Computational Fluid Dynamics Methodology for the Simulation of Roughness Effects on Friction and Heat Transfer in Additive Manufactured Components

Lorenzo Mazzei, Riccardo Da Soghe, Cosimo Bianchini
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. August 2022, 144(8): 081002.
Paper No: TURBO-21-1242
DOI: https://doi.org/10.1115/1.4053493
Published Online: March 3, 2022
View Article titled, Calibration of a Computational Fluid Dynamics Methodology for the Simulation of Roughness Effects on Friction and Heat Transfer in Additive Manufactured Components
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Topics: Computational fluid dynamics, Friction, Heat transfer, Surface roughness, Calibration, Additive manufacturing, Simulation
Journal Articles

Erratum: “Scaling Roughness Effects on Pressure Loss and Heat Transfer of Additively Manufactured Channels” [J. Turbomach. 139(2), p. 021003; DOI: 10.1115/1.4034555 ]

Curtis K. Stimpson, Jacob C. Snyder, Karen A. Thole, Dominic Mongillo
Journal: Journal of Turbomachinery
Article Type: Errata
J. Turbomach. April 2022, 144(4): 047001.
Paper No: TURBO-18-1242
DOI: https://doi.org/10.1115/1.4042129
Published Online: February 17, 2022
View Article titled, Erratum: “Scaling Roughness Effects on Pressure Loss and Heat Transfer of Additively Manufactured Channels” [J. Turbomach. 139(2), p. 021003; DOI: 10.1115/1.4034555 ]
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Topics: Additive manufacturing, Heat transfer, Pressure, Surface roughness
Journal Articles

Efficiency Scaling: Influence of Reynolds and Mach Numbers on Fan Performance

Peter F. Pelz, Sebastian Saul, Johannes Brötz
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. June 2022, 144(6): 061001.
Paper No: TURBO-20-1106
DOI: https://doi.org/10.1115/1.4053172
Published Online: January 28, 2022
View Article titled, Efficiency Scaling: Influence of Reynolds and Mach Numbers on Fan Performance
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Topics: Fans, Flow (Dynamics), Friction, Mach number, Pressure, Reynolds number, Machinery, Impellers, Surface roughness
Journal Articles

Convection in Scaled Turbine Internal Cooling Passages With Additive Manufacturing Roughness

Gabriel J. Stafford, Stephen T. McClain, David R. Hanson, Robert F. Kunz, Karen A. Thole
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. April 2022, 144(4): 041008.
Paper No: TURBO-21-1182
DOI: https://doi.org/10.1115/1.4052524
Published Online: November 10, 2021
View Article titled, Convection in Scaled Turbine Internal Cooling Passages With Additive Manufacturing Roughness
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Topics: Convection, Friction, Heat transfer, Surface roughness, Aluminum, Additive manufacturing, Cooling
Journal Articles

The Influence of Deterministic Surface Roughness and Freestream Turbulence on Transitional Boundary Layers: Heat Transfer Distributions and a New Transition Onset Correlation

Christoph Gramespacher, Matthias Stripf, Hans-Jörg Bauer
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. April 2022, 144(4): 041001.
Paper No: TURBO-21-1127
DOI: https://doi.org/10.1115/1.4052458
Published Online: November 2, 2021
View Article titled, The Influence of Deterministic Surface Roughness and Freestream Turbulence on Transitional Boundary Layers: Heat Transfer Distributions and a New Transition Onset Correlation
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Topics: Boundary layers, Heat transfer, Surface roughness, Turbulence, Reynolds number, Pressure, Suction
Journal Articles

Surface Roughness Impact on Boundary Layer Transition and Loss Mechanisms Over a Flat-Plate Under a Low-Pressure Turbine Pressure Gradient

Heechan Jeong, Seung Jin Song
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. January 2022, 144(1): 011005.
Paper No: TURBO-20-1298
DOI: https://doi.org/10.1115/1.4051937
Published Online: September 7, 2021
View Article titled, Surface Roughness Impact on Boundary Layer Transition and Loss Mechanisms Over a Flat-Plate Under a Low-Pressure Turbine Pressure Gradient
Open the PDF for Surface Roughness Impact on Boundary Layer Transition and Loss Mechanisms Over a Flat-Plate Under a Low-Pressure Turbine Pressure Gradient in another window
Topics: Boundary layers, Surface roughness, Momentum, Turbulence, Shear stress, Turbines
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
Article Type: Research Papers
J. Turbomach. January 2022, 144(1): 011007.
Paper No: TURBO-21-1148
DOI: 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

The Impact of Various Modeling Decisions on Flow Field Predictions in a Centrifugal Compressor

William J. Gooding, Matthew A. Meier, Nicole L. Key
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. October 2021, 143(10): 101006.
Paper No: TURBO-20-1390
DOI: https://doi.org/10.1115/1.4050674
Published Online: May 17, 2021
View Article titled, The Impact of Various Modeling Decisions on Flow Field Predictions in a Centrifugal Compressor
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Topics: Compressors, Diffusers, Flow (Dynamics), Heat transfer, Modeling, Pressure, Surface roughness, Turbulence, Simulation, Design
Journal Articles

The Influence of Element Thermal Conductivity, Shape, and Density on Heat Transfer in a Rough Wall Turbulent Boundary Layer With Strong Pressure Gradients

Christoph Gramespacher, Holger Albiez, Matthias Stripf, Hans-Jörg Bauer
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. August 2021, 143(8): 081001.
Paper No: TURBO-20-1306
DOI: https://doi.org/10.1115/1.4050390
Published Online: April 21, 2021
View Article titled, The Influence of Element Thermal Conductivity, Shape, and Density on Heat Transfer in a Rough Wall Turbulent Boundary Layer With Strong Pressure Gradients
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Topics: Heat transfer, Surface roughness, Thermal conductivity, Turbulence, Density