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D. Keith Walters
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Proceedings Papers

Numerical Analysis of Air Curtain Jet Blast Deflector

Stuart Fletcher, D. Keith Walters, James H. Leylek
Proc. ASME. IMECE2023, Volume 9: Fluids Engineering, V009T10A035, October 29–November 2, 2023
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2023-117140
https://doi.org/10.1115/IMECE2023-117140
View Paper titled, Numerical Analysis of Air Curtain Jet Blast Deflector
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Topics: Aircraft, Aircraft engines, Computational fluid dynamics, Design, Engineering simulation, Engines, Exhaust systems, Flight, Flow (Dynamics), Fluid dynamics
Proceedings Papers

Reynolds-Averaged Navier-Stokes CFD Simulation of High-Speed Boundary Layers

Michael Tullis, D. Keith Walters
Proc. ASME. IMECE2023, Volume 9: Fluids Engineering, V009T10A034, October 29–November 2, 2023
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2023-117089
https://doi.org/10.1115/IMECE2023-117089
View Paper titled, Reynolds-Averaged Navier-Stokes CFD Simulation of High-Speed Boundary Layers
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Topics: Boundary layers, Computational fluid dynamics, Flow (Dynamics), Reynolds-averaged Navier–Stokes equations, Simulation, Turbulence
Proceedings Papers

CFD-Based Optimization of the Kinematic Cycle of an Oscillating Foil Energy Harvesting Device

Nick Rovito, D. Keith Walters
Proc. ASME. IMECE2023, Volume 9: Fluids Engineering, V009T10A014, October 29–November 2, 2023
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2023-116713
https://doi.org/10.1115/IMECE2023-116713
View Paper titled, CFD-Based Optimization of the Kinematic Cycle of an Oscillating Foil Energy Harvesting Device
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Topics: Computational fluid dynamics, Cycles, Energy harvesting, Kinematics, Optimization, Oscillations, Degrees of freedom, Design, Engineering design, Engineering simulation
Proceedings Papers

Investigation of Dynamic Hybrid RANS-LES Turbulence Modeling for CFD Simulation of a Normal Jet in Crossflow

Cole C. Simmonds, D. Keith Walters, James H. Leylek
Proc. ASME. IMECE2023, Volume 9: Fluids Engineering, V009T10A019, October 29–November 2, 2023
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2023-117073
https://doi.org/10.1115/IMECE2023-117073
View Paper titled, Investigation of Dynamic Hybrid RANS-LES Turbulence Modeling for CFD Simulation of a Normal Jet in Crossflow
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Topics: Computational fluid dynamics, Modeling, Reynolds-averaged Navier–Stokes equations, Simulation, Turbulence
Proceedings Papers

A Wall-Modeled Large Eddy Simulation Method for High-Order Spectral Element Solvers

D. Keith Walters, Shanti Bhushan, Wayne Strasser
Proc. ASME. FEDSM2022, Volume 2: Multiphase Flow (MFTC); Computational Fluid Dynamics (CFDTC); Micro and Nano Fluid Dynamics (MNFDTC), V002T05A026, August 3–5, 2022
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2022-87742
https://doi.org/10.1115/FEDSM2022-87742
View Paper titled, A Wall-Modeled Large Eddy Simulation Method for High-Order Spectral Element Solvers
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Topics: Large eddy simulation
Journal Articles

Scale-Resolving Simulations of a Statistically Targeted Forcing Method for Synthetic Turbulence Generation in a Freestream Turbulence

Olalekan O. Shobayo, D. Keith Walters
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. June 2022, 144(6): 061109.
Paper No: FE-21-1520
https://doi.org/10.1115/1.4053647
Published Online: March 11, 2022
View Article titled, Scale-Resolving Simulations of a Statistically Targeted Forcing Method for Synthetic Turbulence Generation in a Freestream Turbulence
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Topics: Simulation, Turbulence, Kinetic energy, Stress, Flow (Dynamics)
Journal Articles

Evaluation of a Statistically Targeted Forcing Method for Synthetic Turbulence Generation in Scale-Resolving Simulations

Olalekan O. Shobayo, D. Keith Walters
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. June 2022, 144(6): 061107.
Paper No: FE-21-1372
https://doi.org/10.1115/1.4053551
Published Online: February 23, 2022
View Article titled, Evaluation of a Statistically Targeted Forcing Method for Synthetic Turbulence Generation in Scale-Resolving Simulations
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Topics: Simulation, Turbulence
Proceedings Papers

A New Variant of the Dynamic Hybrid RANS-LES Model for Complex Turbulent Flows

Tausif Jamal, Olalekan O. Shobayo, D. Keith Walters
Proc. ASME. IMECE2021, Volume 10: Fluids Engineering, V010T10A052, November 1–5, 2021
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2021-72185
https://doi.org/10.1115/IMECE2021-72185
View Paper titled, A New Variant of the Dynamic Hybrid RANS-LES Model for Complex Turbulent Flows
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Topics: Channel flow, Reynolds-averaged Navier–Stokes equations, Turbulence
Proceedings Papers

Statistically Targeted Forcing (STF) Method for Synthetic Turbulence Generation of Initial Conditions in Three-Dimensional Turbulent Mixing Layer Flow

Olalekan O. Shobayo, D. Keith Walters
Proc. ASME. FEDSM2021, Volume 1: Aerospace Engineering Division Joint Track; Computational Fluid Dynamics, V001T02A030, August 10–12, 2021
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2021-65916
https://doi.org/10.1115/FEDSM2021-65916
View Paper titled, Statistically Targeted Forcing (STF) Method for Synthetic Turbulence Generation of Initial Conditions in Three-Dimensional Turbulent Mixing Layer Flow
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Topics: Flow (Dynamics), Turbulence, Stress, Computational fluid dynamics, Dynamics (Mechanics), Vortices, Engineering simulation, Large eddy simulation, Simulation, Statistical distributions
Journal Articles

Numerical Simulation of a Three-Dimensional Axisymmetric Hill: Performance Evaluation of Hybrid RANS–LES Models

Tausif Jamal, Varun Chitta, D. Keith Walters
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. October 2021, 143(10): 101503.
Paper No: FE-20-1300
https://doi.org/10.1115/1.4051027
Published Online: June 4, 2021
View Article titled, Numerical Simulation of a Three-Dimensional Axisymmetric Hill: Performance Evaluation of Hybrid RANS–LES Models
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Topics: Flow (Dynamics), Reynolds-averaged Navier–Stokes equations, Separation (Technology), Simulation, Turbulence, Pressure, Viscosity, Delay differential equations, Boundary layers, Computer simulation
Journal Articles

Hybrid RANS–LES Simulation of Turbulent Heat Transfer in a Channel Flow With Imposed Streamwise or Spanwise Mean Temperature Gradient

Olalekan O. Shobayo, D. Keith Walters
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. August 2021, 143(8): 081104.
Paper No: FE-21-1150
https://doi.org/10.1115/1.4051067
Published Online: June 4, 2021
View Article titled, Hybrid RANS–LES Simulation of Turbulent Heat Transfer in a Channel Flow With Imposed Streamwise or Spanwise Mean Temperature Gradient
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Topics: Delay differential equations, Flow (Dynamics), Heat flux, Large eddy simulation, Reynolds-averaged Navier–Stokes equations, Simulation, Temperature, Temperature gradient, Turbulence, Eddies (Fluid dynamics)
Journal Articles

Identification of a Pressure–Strain Correlation-Based Bypass Transition Onset Marker

Satish Muthu, Shanti Bhushan, D. Keith Walters
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. October 2021, 143(10): 101501.
Paper No: FE-20-1380
https://doi.org/10.1115/1.4050705
Published Online: May 28, 2021
View Article titled, Identification of a Pressure–Strain Correlation-Based Bypass Transition Onset Marker
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Topics: Flow (Dynamics), Pressure, Turbulence, Boundary layers, Simulation, Fluctuations (Physics), Flat plates
Proceedings Papers

Investigation of Numerical Scheme and Model Combinations for CFD Simulation of a Thermosyphon

Huiyu Wang, D. Keith Walters, Keisha B. Walters
Proc. ASME. FEDSM2020, Volume 1: Fluid Applications and Systems; Fluid Measurement and Instrumentation, V001T01A021, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2020-20355
https://doi.org/10.1115/FEDSM2020-20355
View Paper titled, Investigation of Numerical Scheme and Model Combinations for CFD Simulation of a Thermosyphon
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Topics: Computational fluid dynamics, Simulation, Temperature, Mass transfer, Flow (Dynamics), Relaxation (Physics), Boundary-value problems, Condensation, Condensers (steam plant), Evaporation
Proceedings Papers

Numerical Investigation and Performance Characterization of Oscillating Foil Energy Harvesting

James Pannell, D. Keith Walters
Proc. ASME. FEDSM2020, Volume 2: Fluid Mechanics; Multiphase Flows, V002T03A018, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2020-20375
https://doi.org/10.1115/FEDSM2020-20375
View Paper titled, Numerical Investigation and Performance Characterization of Oscillating Foil Energy Harvesting
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Topics: Energy harvesting, Oscillations, Performance characterization, Chords (Trusses), Computational fluid dynamics, Energy generation, Energy sustainability, Rivers, Tides
Proceedings Papers

Performance Evaluation of a Non-Linear Explicit Algebraic Reynolds Stress Model for Surface Mounted Obstacles

Benjamin H. Taylor, Tausif Jamal, D. Keith Walters
Proc. ASME. FEDSM2020, Volume 3: Computational Fluid Dynamics; Micro and Nano Fluid Dynamics, V003T05A025, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2020-20304
https://doi.org/10.1115/FEDSM2020-20304
View Paper titled, Performance Evaluation of a Non-Linear Explicit Algebraic Reynolds Stress Model for Surface Mounted Obstacles
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Topics: Algebra, Performance evaluation, Stress, Reynolds-averaged Navier–Stokes equations, Flow (Dynamics), Eddies (Fluid dynamics), Viscosity, Wakes, Anisotropy, Computer simulation
Proceedings Papers

Investigation of Turbulence Model Performance in Computational Fluid Dynamics Simulations of Horizontal Axis Wind Turbines

Keaton Mullenix, D. Keith Walters, Arturo Villegas, F. Javier Diez
Proc. ASME. FEDSM2020, Volume 3: Computational Fluid Dynamics; Micro and Nano Fluid Dynamics, V003T05A023, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2020-20269
https://doi.org/10.1115/FEDSM2020-20269
View Paper titled, Investigation of Turbulence Model Performance in Computational Fluid Dynamics Simulations of Horizontal Axis Wind Turbines
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Topics: Computational fluid dynamics, Horizontal axis wind turbines, Simulation, Turbulence, Wind turbines, Modeling, Errors, Flow (Dynamics), Fluids, Fossil fuels
Proceedings Papers

Numerical Simulation of Non-Stationary Turbulent Flows Using Double Exponential Dynamic Time Filtering Technique

Tausif Jamal, Shanti Bhushan, D. Keith Walters
Proc. ASME. FEDSM2020, Volume 3: Computational Fluid Dynamics; Micro and Nano Fluid Dynamics, V003T05A038, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2020-20295
https://doi.org/10.1115/FEDSM2020-20295
View Paper titled, Numerical Simulation of Non-Stationary Turbulent Flows Using Double Exponential Dynamic Time Filtering Technique
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Topics: Computer simulation, Filtration, Turbulence, Reynolds-averaged Navier–Stokes equations, Flow (Dynamics), Statistics, Boundary layers, Combustion, Hemodynamics, Hydrodynamics
Proceedings Papers

Evaluation of a Statistically Targeted Forcing Method for Synthetic Turbulence Generation in Large-Eddy Simulations and Hybrid RANS-LES Simulations

Olalekan O. Shobayo, D. Keith Walters
Proc. ASME. FEDSM2020, Volume 3: Computational Fluid Dynamics; Micro and Nano Fluid Dynamics, V003T05A043, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2020-20376
https://doi.org/10.1115/FEDSM2020-20376
View Paper titled, Evaluation of a Statistically Targeted Forcing Method for Synthetic Turbulence Generation in Large-Eddy Simulations and Hybrid RANS-LES Simulations
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Topics: Engineering simulation, Large eddy simulation, Reynolds-averaged Navier–Stokes equations, Simulation, Turbulence, Computational fluid dynamics, Eddies (Fluid dynamics), Stress, Anisotropy, Flow (Dynamics)
Proceedings Papers

Investigation of an Algebraic Reynolds Stress Model for Simulation of Wall-Bounded Turbulent Flows With and Without Buoyancy Effects

Tausif Jamal, D. Keith Walters
Proc. ASME. FEDSM2020, Volume 3: Computational Fluid Dynamics; Micro and Nano Fluid Dynamics, V003T05A042, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2020-20354
https://doi.org/10.1115/FEDSM2020-20354
View Paper titled, Investigation of an Algebraic Reynolds Stress Model for Simulation of Wall-Bounded Turbulent Flows With and Without Buoyancy Effects
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Topics: Algebra, Buoyancy, Simulation, Stress, Turbulence, Reynolds-averaged Navier–Stokes equations, Computational fluid dynamics, Computer simulation, Heat flux, Modeling
Proceedings Papers

Evaluation of Pressure-Strain Correlation As a Basis for Development of a Physics-Based Transition Onset Marker

Satish Muthu, Shanti Bhushan, D. Keith Walters
Proc. ASME. AJKFluids2019, Volume 2: Computational Fluid Dynamics, V002T02A059, July 28–August 1, 2019
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2019-5418
https://doi.org/10.1115/AJKFluids2019-5418
View Paper titled, Evaluation of Pressure-Strain Correlation As a Basis for Development of a Physics-Based Transition Onset Marker
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Topics: Physics, Pressure, Boundary layers, Computational fluid dynamics, Engineering simulation, Reynolds-averaged Navier–Stokes equations, Simulation, Computer simulation, Flat plates, Flow instability