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Journal Articles

ROUGHNESS EFFECTS ON DENSE-GAS TURBINE FLOW: COMPARISON OF EXPERIMENTS AND SIMULATIONS

Accepted Manuscript
Xavier Gloerfelt, Leander Hake, Aurélien Bienner, Camille Matar, Paola Cinnella, Stefan aus der Wiesche
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach.
Paper No: TURBO-24-1258
https://doi.org/10.1115/1.4067443
Published Online: December 13, 2024
View Article titled, ROUGHNESS EFFECTS ON DENSE-GAS TURBINE FLOW: COMPARISON OF EXPERIMENTS AND SIMULATIONS
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Topics: Boundary layers, Flow (Dynamics), Simulation, Surface roughness, Turbines, Turbochargers, Blades, Computational fluid dynamics, Vortex shedding, Additive manufacturing
Journal Articles

Thermohydraulic Performance and Flow Structures of Diamond Pyramid Arrays

Thomas M. Corbett, Karen A. Thole
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2025, 147(7): 071006.
Paper No: TURBO-24-1196
https://doi.org/10.1115/1.4067124
Published Online: December 10, 2024
View Article titled, Thermohydraulic Performance and Flow Structures of Diamond Pyramid Arrays
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Topics: Diamonds, Flow (Dynamics), Friction, Heat transfer, Surface roughness, Design, Pressure, Temperature
Journal Articles

EFFECTS OF LOCALIZED NON-GAUSSIAN ROUGHNESS ON HIGH PRESSURE TURBINE AERO-THERMAL PERFORMANCE: CONVECTIVE HEAT TRANSFER, SKIN-FRICTION AND THE REYNOLDS' ANALOGY

Accepted Manuscript
Thomas Jelly, Massimiliano Nardini, Richard Sandberg, Paul Vitt, Greg Sluyter
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach.
Paper No: TURBO-24-1286
https://doi.org/10.1115/1.4067354
Published Online: December 6, 2024
View Article titled, EFFECTS OF LOCALIZED NON-GAUSSIAN ROUGHNESS ON HIGH PRESSURE TURBINE AERO-THERMAL PERFORMANCE: CONVECTIVE HEAT TRANSFER, SKIN-FRICTION AND THE REYNOLDS' ANALOGY
Open the PDF for EFFECTS OF LOCALIZED NON-GAUSSIAN ROUGHNESS ON HIGH PRESSURE TURBINE AERO-THERMAL PERFORMANCE: CONVECTIVE HEAT TRANSFER, SKIN-FRICTION AND THE REYNOLDS' ANALOGY in another window
Topics: Boundary layers, Convection, Heat transfer, High pressure (Physics), Skin friction (Fluid dynamics), Surface roughness, Turbines, Turbochargers, Drag (Fluid dynamics), Computational fluid dynamics
Journal Articles

ROUGHNESS INVESTIGATIONS ON IN-SERVICE HIGH-PRESSURE COMPRESSOR BLADES - PART I: AN AUTOMATED PROCESS FOR HIGH-FIDELITY ROUGHNESS MEASUREMENTS

Accepted Manuscript
Ilias Vasilopoulos, Mirco Rostamian, Matthias Voigt, Marcus Meyer, Ronald Mailach
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach.
Paper No: TURBO-24-1054
https://doi.org/10.1115/1.4067291
Published Online: November 27, 2024
View Article titled, ROUGHNESS INVESTIGATIONS ON IN-SERVICE HIGH-PRESSURE COMPRESSOR BLADES - PART I: AN AUTOMATED PROCESS FOR HIGH-FIDELITY ROUGHNESS MEASUREMENTS
Open the PDF for ROUGHNESS INVESTIGATIONS ON IN-SERVICE HIGH-PRESSURE COMPRESSOR BLADES - PART I: AN AUTOMATED PROCESS FOR HIGH-FIDELITY ROUGHNESS MEASUREMENTS in another window
Topics: Blades, Compressors, High pressure (Physics), Surface roughness, Turbochargers, Rotors, Approximation, Engineering simulation, Errors, Lenses (Optics)
Journal Articles

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
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. April 2025, 147(4): 041013.
Paper No: TURBO-24-1198
https://doi.org/10.1115/1.4066561
Published Online: November 12, 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, Blades, Cooling, Design, Electrical discharge machining, Film cooling, Flow (Dynamics), Manufacturing, Surface roughness, Turbine blades
Journal Articles

Performance of Rough-Ribbed Low-Pressure Turbine Blades Under Varying Loading and Operating Conditions

S. M. Ananth, Massimiliano Nardini, Melissa Kozul, Nagabhushana Rao Vadlamani, Richard D. Sandberg
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. April 2025, 147(4): 041011.
Paper No: TURBO-24-1255
https://doi.org/10.1115/1.4066815
Published Online: October 25, 2024
View Article titled, Performance of Rough-Ribbed Low-Pressure Turbine Blades Under Varying Loading and Operating Conditions
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Topics: Boundary layers, Flow (Dynamics), Reynolds number, Skin friction (Fluid dynamics), Surface roughness, Turbulence, Pressure, Simulation, Blades, Statistics
Journal Articles

Impact of the Wall-Parallel Length Scale of Roughness on the Development of Turbulent Boundary Layers in Turbines

Abigail M. Berhane, John P. Longley
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. February 2025, 147(2): 021011.
Paper No: TURBO-24-1185
https://doi.org/10.1115/1.4066579
Published Online: October 21, 2024
View Article titled, Impact of the Wall-Parallel Length Scale of Roughness on the Development of Turbulent Boundary Layers in Turbines
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Topics: Surface roughness, Sands, Boundary layers
Journal Articles

Assessment of Additive Manufactured Micro-Channel Characteristics: Impact of Hydraulic Diameter Evaluation

Tommaso Bacci, Alessio Picchi, Niccolo’ Castelli, Bruno Facchini, Francesco Morante, Luca Innocenti
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. March 2025, 147(3): 031009.
Paper No: TURBO-24-1181
https://doi.org/10.1115/1.4066700
Published Online: October 15, 2024
View Article titled, Assessment of Additive Manufactured Micro-Channel Characteristics: Impact of Hydraulic Diameter Evaluation
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Topics: Additive manufacturing, Friction, Heat transfer, Microchannels, Surface roughness, Pressure, Shapes, Reynolds number, Cooling, Skin
Journal Articles

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

Abbigail Y. Altland, Thomas M. Corbett, Karen A. Thole
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. March 2025, 147(3): 031006.
Paper No: TURBO-24-1178
https://doi.org/10.1115/1.4066580
Published Online: October 8, 2024
View Article titled, Impacts of Material and Machine on the Variation of Additively Manufactured Cooling Channels
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Topics: Cooling, Heat transfer, Machinery, Surface roughness, Additive manufacturing, Friction, Diamonds, surface morphology, Design, Geometry
Journal Articles

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

Thomas M. Corbett, Karen A. Thole
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. March 2025, 147(3): 031007.
Paper No: TURBO-24-1197
https://doi.org/10.1115/1.4066581
Published Online: October 8, 2024
View Article titled, Scaling Heat Transfer and Pressure Losses of Novel Additively Manufactured Rib Designs
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Topics: Design, Flow (Dynamics), Friction, Heat transfer, Pressure, Reynolds number, Surface roughness, Additive manufacturing
Journal Articles

Boundary Layer Analysis of a Transonic High-Pressure Turbine Vane Using Ultra-Fast-Response Temperature-Sensitive Paint

Anna Petersen, Michael Hilfer
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. September 2024, 146(9): 091013.
Paper No: TURBO-23-1124
https://doi.org/10.1115/1.4065739
Published Online: July 15, 2024
View Article titled, Boundary Layer Analysis of a Transonic High-Pressure Turbine Vane Using Ultra-Fast-Response Temperature-Sensitive Paint
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Topics: Boundary layers, Flow (Dynamics), Separation (Technology), Shock (Mechanics), Surface roughness, Temperature, Turbines, Wind tunnels, Bubbles, Nozzle guide vanes
Journal Articles

Film Cooling Performances Under Various Upstream Roughness Conditions: Experimental Investigations and Similarity Hypothesis

Weichen Huang, Kechen Wang, Fei Zeng, Wenbin Chen, Wenwu Zhou, Xin Wen, Di Peng, Yingzheng Liu
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. November 2024, 146(11): 111009.
Paper No: TURBO-23-1335
https://doi.org/10.1115/1.4065682
Published Online: June 18, 2024
View Article titled, Film Cooling Performances Under Various Upstream Roughness Conditions: Experimental Investigations and Similarity Hypothesis
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Topics: Cooling, Film cooling, Surface roughness, Turbines
Journal Articles

ROUGHNESS INVESTIGATIONS ON IN-SERVICE HIGH-PRESSURE COMPRESSOR BLADES – PART II: ROUGHNESS PARAMETERIZATION AND CFD-BASED MODELLING OF ITS IMPACT ON TURBULENT FLOWS

Accepted Manuscript
Ilias Vasilopoulos, Paolo Adami, Matthias Voigt, Marcus Meyer, Ronald Mailach
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach.
Paper No: TURBO-23-1224
https://doi.org/10.1115/1.4065681
Published Online: June 6, 2024
View Article titled, ROUGHNESS INVESTIGATIONS ON IN-SERVICE HIGH-PRESSURE COMPRESSOR BLADES – PART II: ROUGHNESS PARAMETERIZATION AND CFD-BASED MODELLING OF ITS IMPACT ON TURBULENT FLOWS
Open the PDF for ROUGHNESS INVESTIGATIONS ON IN-SERVICE HIGH-PRESSURE COMPRESSOR BLADES – PART II: ROUGHNESS PARAMETERIZATION AND CFD-BASED MODELLING OF ITS IMPACT ON TURBULENT FLOWS in another window
Topics: Blades, Compressors, Computational fluid dynamics, High pressure (Physics), Modeling, Parametrization, Surface roughness, Turbochargers, Turbulence
Journal Articles

Impact of Low Freestream Turbulence and Surface Roughness on the Flat-Plate Boundary Layer Transition Under a High-Lift Airfoil Pressure Gradient

Heechan Jeong, Seung Jin Song
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. November 2024, 146(11): 111003.
Paper No: TURBO-23-1272
https://doi.org/10.1115/1.4065494
Published Online: May 23, 2024
View Article titled, Impact of Low Freestream Turbulence and Surface Roughness on the Flat-Plate Boundary Layer Transition Under a High-Lift Airfoil Pressure Gradient
Open the PDF for Impact of Low Freestream Turbulence and Surface Roughness on the Flat-Plate Boundary Layer Transition Under a High-Lift Airfoil Pressure Gradient in another window
Topics: Boundary layers, Free stream turbulence, Surface roughness, Turbulence, Flat plates, Pressure gradient, Airfoils
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

Effects of Riblet Dimensions on the Transitional Boundary Layers Over High-Lift Turbine Blades

S. M. Ananth, Massimiliano Nardini, Aditya Vaid, Melissa Kozul, Nagabhushana Rao Vadlamani, Richard D. Sandberg
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. March 2024, 146(3): 031012.
Paper No: TURBO-23-1250
https://doi.org/10.1115/1.4064087
Published Online: December 14, 2023
View Article titled, Effects of Riblet Dimensions on the Transitional Boundary Layers Over High-Lift Turbine Blades
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Topics: Blades, Boundary layers, Dimensions, Flow (Dynamics), Surface roughness, Turbulence, Turbine blades, Skin friction (Fluid dynamics), Simulation, Pressure gradient
Journal Articles

Direct Numerical Simulation of Transitional and Turbulent Flows Over Multi-Scale Surface Roughness—Part I: Methodology and Challenges

Massimiliano Nardini, Melissa Kozul, Thomas O. Jelly, Richard D. Sandberg
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. March 2024, 146(3): 031008.
Paper No: TURBO-23-1172
https://doi.org/10.1115/1.4063753
Published Online: December 4, 2023
View Article titled, Direct Numerical Simulation of Transitional and Turbulent Flows Over Multi-Scale Surface Roughness—Part I: Methodology and Challenges
Open the PDF for Direct Numerical Simulation of Transitional and Turbulent Flows Over Multi-Scale Surface Roughness—Part I: Methodology and Challenges in another window
Topics: Blades, Flow (Dynamics), Surface roughness, Turbulence, Computer simulation
Journal Articles

Direct Numerical Simulation of Transitional and Turbulent Flows Over Multi-Scale Surface Roughness—Part II: The Effect of Roughness on the Performance of a High-Pressure Turbine Blade

Massimiliano Nardini, Thomas O. Jelly, Melissa Kozul, Richard D. Sandberg, Paul Vitt, Greg Sluyter
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. March 2024, 146(3): 031009.
Paper No: TURBO-23-1225
https://doi.org/10.1115/1.4063974
Published Online: December 4, 2023
View Article titled, Direct Numerical Simulation of Transitional and Turbulent Flows Over Multi-Scale Surface Roughness—Part II: The Effect of Roughness on the Performance of a High-Pressure Turbine Blade
Open the PDF for Direct Numerical Simulation of Transitional and Turbulent Flows Over Multi-Scale Surface Roughness—Part II: The Effect of Roughness on the Performance of a High-Pressure Turbine Blade in another window
Topics: Blades, Boundary layers, Surface roughness, Turbulence, Computer simulation, Turbine blades, High pressure (Physics), Flow (Dynamics), Heat flux, Wakes
Journal Articles

Experimental Investigations on the Effects of Surface Roughness for Compressor Cascades With Different Roughness Magnitude and Location

Xianjun Yu, Shouyang Zhao, Guangfeng An, Yuhang Xu, Xiaobin Xu
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. March 2024, 146(3): 031007.
Paper No: TURBO-22-1111
https://doi.org/10.1115/1.4063973
Published Online: November 16, 2023
View Article titled, Experimental Investigations on the Effects of Surface Roughness for Compressor Cascades With Different Roughness Magnitude and Location
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Topics: Blades, Flow (Dynamics), Pressure, Surface roughness, Compressors, Cascades (Fluid dynamics), Suction, Boundary layers