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Robert F. Kunz
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Journal Articles

Data-guided low-Reynolds-number corrections for two-equation models

Accepted Manuscript
Xiaohan Hu, George Huang, Robert F. Kunz, Xiang Yang
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng.
Paper No: FE-24-1237
https://doi.org/10.1115/1.4066642
Published Online: September 28, 2024
View Article titled, Data-guided low-Reynolds-number corrections for two-equation models
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Topics: Boundary layers, Computer simulation, Energy dissipation, Flat plates, Flow (Dynamics), Polishing equipment, Pressure, Pressure gradient, Skin friction (Fluid dynamics)
Journal Articles

Flow Through a Passage With Scaled Additive Manufacturing Roughness Representing Different Printing Orientations

Ryan Boldt, Stephen T. McClain, Robert F. Kunz
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. December 2024, 146(12): 121203.
Paper No: FE-24-1154
https://doi.org/10.1115/1.4065765
Published Online: July 16, 2024
View Article titled, Flow Through a Passage With Scaled Additive Manufacturing Roughness Representing Different Printing Orientations
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Topics: Flow (Dynamics), Surface roughness, Friction
Journal Articles

In Search of a Universal Rough Wall Model

Xiang I. A. Yang, Wen Zhang, Junlin Yuan, Robert F. Kunz
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. October 2023, 145(10): 101302.
Paper No: FE-23-1079
https://doi.org/10.1115/1.4062820
Published Online: July 14, 2023
View Article titled, In Search of a Universal Rough Wall Model
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Topics: Surface roughness
Proceedings Papers

Unstructured Rotor-Stator Analysis of Axial Turbomachinery Using a Pressure Based Method

Wen-Sheng Yu, Robert F. Kunz, Stephen M. Ettorre, Steven P. Antal
Proc. ASME. IMECE2001, Advanced Energy Systems, 135-146, November 11–16, 2001
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2001/AES-23617
https://doi.org/10.1115/IMECE2001/AES-23617
View Paper titled, Unstructured Rotor-Stator Analysis of Axial Turbomachinery Using a Pressure Based Method
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Topics: Pressure, Rotors, Stators, Turbomachinery, Blades, Wakes, Computational fluid dynamics, Algorithms, Flow (Dynamics), Modeling
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
Publisher: ASME
Article Type: Research Papers
J. Turbomach. April 2022, 144(4): 041008.
Paper No: TURBO-21-1182
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
Proceedings Papers

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
Proc. ASME. GT2021, Volume 5B: Heat Transfer — General Interest; Internal Air Systems; Internal Cooling, V05BT15A018, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59684
https://doi.org/10.1115/GT2021-59684
View Paper titled, Convection in Scaled Turbine Internal Cooling Passages With Additive Manufacturing Roughness
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Topics: Additive manufacturing, Convection, Cooling, Surface roughness, Turbines, Aluminum, Friction, Compressibility, Computer numerical control machine tools, Drag (Fluid dynamics)
Journal Articles

Flow in a Simulated Turbine Blade Cooling Channel With Spatially Varying Roughness Caused by Additive Manufacturing Orientation

Stephen T. McClain, David R. Hanson, Emily Cinnamon, Jacob C. Snyder, Robert F. Kunz, Karen A. Thole
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2021, 143(7): 071013.
Paper No: TURBO-20-1292
https://doi.org/10.1115/1.4050389
Published Online: April 19, 2021
View Article titled, Flow in a Simulated Turbine Blade Cooling Channel With Spatially Varying Roughness Caused by Additive Manufacturing Orientation
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Topics: Surface roughness, Flow (Dynamics), Friction
Proceedings Papers

Flow in a Simulated Turbine Blade Cooling Channel With Spatially Varying Roughness Caused by Additive Manufacturing Orientation

Stephen T. McClain, David R. Hanson, Emily Cinnamon, Jacob C. Snyder, Robert F. Kunz, Karen A. Thole
Proc. ASME. GT2020, Volume 7A: Heat Transfer, V07AT15A031, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-16069
https://doi.org/10.1115/GT2020-16069
View Paper titled, Flow in a Simulated Turbine Blade Cooling Channel With Spatially Varying Roughness Caused by Additive Manufacturing Orientation
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Topics: Additive manufacturing, Cooling, Flow (Dynamics), Surface roughness, Turbine blades, Turbulence, Friction, Computational fluid dynamics, Dimensions, Gravity (Force)
Proceedings Papers

A Computational Investigation of Dynamic Stabilization of Rayleigh-Bénard Convection Under System Acceleration

Ilker Topcuoglu, Robert F. Kunz, Robert W. Smith
Proc. ASME. HT2020, ASME 2020 Heat Transfer Summer Conference, V001T02A002, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: HT2020-9020
https://doi.org/10.1115/HT2020-9020
View Paper titled, A Computational Investigation of Dynamic Stabilization of Rayleigh-Bénard Convection Under System Acceleration
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Topics: Convection, Flow (Dynamics), Dynamic stability, Stability, Approximation, Compressible flow, Density, Enthalpy, Equations of state, Heating
Journal Articles

Experimental Characterization of High-Amplitude Fluid–Structure Interaction of a Flexible Hydrofoil at High Reynolds Number

Brian R. Elbing, Steven D. Young, Michael L. Jonson, Robert L. Campbell, Brent A. Craven, Robert F. Kunz, Kevin L. Koudela
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. August 2020, 142(4): 041014.
Paper No: VIB-19-1368
https://doi.org/10.1115/1.4046751
Published Online: April 21, 2020
View Article titled, Experimental Characterization of High-Amplitude Fluid–Structure Interaction of a Flexible Hydrofoil at High Reynolds Number
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Topics: Cylinders, Flow (Dynamics), Fluid structure interaction, Pressure, Reynolds number, Wakes, Deflection, Chords (Trusses), Stress, Turbulence
Includes: Supplementary data
Proceedings Papers

Evaluating Splitter Blade Designs to Avoid Impeller Failure in a High-Speed Unshrouded Centrifugal Compressor

Alex Curtin, Reid A. Berdanier, Robert F. Kunz, Michael L. Jonson
Proc. ASME. GT2019, Volume 7A: Structures and Dynamics, V07AT36A015, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91359
https://doi.org/10.1115/GT2019-91359
View Paper titled, Evaluating Splitter Blade Designs to Avoid Impeller Failure in a High-Speed Unshrouded Centrifugal Compressor
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Topics: Blades, Compressors, Failure, Impellers, Computational fluid dynamics, Inlet guide vanes, Failure mechanisms, Shock waves, Boundary layers, Cracking (Materials)
Proceedings Papers

Flow in a Scaled Turbine Coolant Channel With Roughness due to Additive Manufacturing

David R. Hanson, Stephen T. McClain, Jacob C. Snyder, Robert F. Kunz, Karen A. Thole
Proc. ASME. GT2019, Volume 5B: Heat Transfer, V05BT21A004, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90931
https://doi.org/10.1115/GT2019-90931
View Paper titled, Flow in a Scaled Turbine Coolant Channel With Roughness due to Additive Manufacturing
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Topics: Additive manufacturing, Coolants, Flow (Dynamics), Surface roughness, Turbines, Computational fluid dynamics, Friction, Internal flow, Simulation, Engines
Journal Articles

An Assessment of Computational Fluid Dynamics Cavitation Models Using Bubble Growth Theory and Bubble Transport Modeling

Michael P. Kinzel, Jules W. Lindau, Robert F. Kunz
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. April 2019, 141(4): 041301.
Paper No: FE-18-1140
https://doi.org/10.1115/1.4042421
Published Online: February 8, 2019
View Article titled, An Assessment of Computational Fluid Dynamics Cavitation Models Using Bubble Growth Theory and Bubble Transport Modeling
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Topics: Bubbles, Cavitation, Modeling, Computational fluid dynamics
eBook Chapter

An Evaluation of CFD Cavitation Models using Streamline Data

Series: ASME Press Select Proceedings
Publisher: ASME Press
Published: 2018
ISBN: 9780791861851
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Topics: Cavitation, Computational fluid dynamics
Proceedings Papers

A Unified Homogenous Multiphase CFD Model for Cavitation

Michael P. Kinzel, Jules W. Lindau, Robert F. Kunz
Proc. ASME. FEDSM2017, Volume 1B, Symposia: Fluid Measurement and Instrumentation; Fluid Dynamics of Wind Energy; Renewable and Sustainable Energy Conversion; Energy and Process Engineering; Microfluidics and Nanofluidics; Development and Applications in Computational Fluid Dynamics; DNS/LES and Hybrid RANS/LES Methods, V01BT11A020, July 30–August 3, 2017
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2017-69363
https://doi.org/10.1115/FEDSM2017-69363
View Paper titled, A Unified Homogenous Multiphase CFD Model for Cavitation
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Topics: Cavitation, Computational fluid dynamics, Analytical methods, Bubbles, Dynamics (Mechanics), Modeling
Proceedings Papers

Cytokine Convection Affects Cancer Metastasis by a Shear Rate Dependent Mechanism

Meghan H. Hoskins, Shile Liang, Payal Khanna, Robert F. Kunz, Cheng Dong
Proc. ASME. SBC2008, ASME 2008 Summer Bioengineering Conference, Parts A and B, 513-514, June 25–29, 2008
Publisher: American Society of Mechanical Engineers
Paper No: SBC2008-192904
https://doi.org/10.1115/SBC2008-192904
View Paper titled, Cytokine Convection Affects Cancer Metastasis by a Shear Rate Dependent Mechanism
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Topics: Cancer, Convection, Shear rate, Skin
Proceedings Papers

Cellular Mechanics and Biology of Tumor Cell-Leukocyte Interactions in the Near Wall Region Under Shear Flow Conditions

Meghan H. Hoskins, Shile Liang, Robert F. Kunz, Cheng Dong
Proc. ASME. SBC2007, ASME 2007 Summer Bioengineering Conference, 371-372, June 20–24, 2007
Publisher: American Society of Mechanical Engineers
Paper No: SBC2007-176376
https://doi.org/10.1115/SBC2007-176376
View Paper titled, Cellular Mechanics and Biology of Tumor Cell-Leukocyte Interactions in the Near Wall Region Under Shear Flow Conditions
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Topics: Biology, Cellular mechanics, Leukocytes, Shear flow, Tumors, Cancer, Skin
Journal Articles

CFD Analysis of Gear Windage Losses: Validation and Parametric Aerodynamic Studies

Matthew J. Hill, Robert F. Kunz, Richard B. Medvitz, Robert F. Handschuh, Lyle N. Long, Ralph W. Noack, Philip J. Morris
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. March 2011, 133(3): 031103.
https://doi.org/10.1115/1.4003681
Published Online: March 16, 2011
View Article titled, CFD Analysis of Gear Windage Losses: Validation and Parametric Aerodynamic Studies
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Topics: Gears, Computational fluid dynamics
Proceedings Papers

Two Fluid Modeling of Microbubble Turbulent Drag Reduction

Robert F. Kunz, Steven Deutsch, Jules W. Lindau
Proc. ASME. FEDSM2003, Volume 1: Fora, Parts A, B, C, and D, 609-618, July 6–10, 2003
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2003-45640
https://doi.org/10.1115/FEDSM2003-45640
View Paper titled, Two Fluid Modeling of Microbubble Turbulent Drag Reduction
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Topics: Drag reduction, Fluids, Modeling, Turbulence, Flow (Dynamics), Boundary layers, Flat plates, Reynolds number, Skin friction (Fluid dynamics), Bubbles
Proceedings Papers

Propeller Cavitation Breakdown Analysis

Jules W. Lindau, Richard B. Medvitz, David A. Boger, Robert F. Kunz
Proc. ASME. FEDSM2003, Volume 1: Fora, Parts A, B, C, and D, 1227-1237, July 6–10, 2003
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2003-45407
https://doi.org/10.1115/FEDSM2003-45407
View Paper titled, Propeller Cavitation Breakdown Analysis
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Topics: Cavitation, Propellers, Thrust, Torque, Cavities, Multiphase flow, Shapes, Water tunnels