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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

Paper No: IMECE2021-72185

DOI: https://doi.org/10.1115/IMECE2021-72185

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Topics: Channel flow, Reynolds-averaged Navier–Stokes equations, Turbulence

Journal Articles

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

Tausif Jamal, Varun Chitta, D. Keith Walters

J. Fluids Eng. October 2021, 143(10): 101503.

Paper No: FE-20-1300

DOI: https://doi.org/10.1115/1.4051027

Published Online: June 4, 2021

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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

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

Paper No: FEDSM2020-20304

DOI: https://doi.org/10.1115/FEDSM2020-20304

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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

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

Paper No: FEDSM2020-20295

DOI: https://doi.org/10.1115/FEDSM2020-20295

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Topics: Computer simulation, Filtration, Turbulence, Reynolds-averaged Navier–Stokes equations, Flow (Dynamics), Statistics, Boundary layers, Combustion, Hemodynamics, Hydrodynamics

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

Paper No: FEDSM2020-20354

DOI: https://doi.org/10.1115/FEDSM2020-20354

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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

A Dynamic Time Filtering Technique for Hybrid RANS-LES Simulation of Non-Stationary Turbulent Flow

Tausif Jamal, D. Keith Walters

Proc. ASME. AJKFluids2019, Volume 2: Computational Fluid Dynamics, V002T02A051, July 28–August 1, 2019

Paper No: AJKFluids2019-4696

DOI: https://doi.org/10.1115/AJKFluids2019-4696

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Topics: Filtration, Reynolds-averaged Navier–Stokes equations, Simulation, Turbulence, Flow (Dynamics), Computational fluid dynamics, Engineering simulation, Large eddy simulation, Pressure gradient, Channel flow

Proceedings Papers

LES and Hybrid RANS-LES Simulation of a Pulsating Channel Flow

Tausif Jamal, Huiyu Wang, D. Keith Walters

Proc. ASME. IMECE2018, Volume 7: Fluids Engineering, V007T09A078, November 9–15, 2018

Paper No: IMECE2018-87990

DOI: https://doi.org/10.1115/IMECE2018-87990

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Topics: Channel flow, Reynolds-averaged Navier–Stokes equations, Simulation, Flow (Dynamics), Computational fluid dynamics, Turbulence, Blood flow, Boundary layer turbulence, Combustion, Filters

Journal Articles

Computational Fluid Dynamics Study of Separated Flow Over a Three-Dimensional Axisymmetric Hill

Varun Chitta, Tausif Jamal, D. Keith Walters

J. Fluids Eng. January 2019, 141(1): 011205.

Paper No: FE-17-1612

DOI: https://doi.org/10.1115/1.4040467

Published Online: June 29, 2018

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Topics: Computational fluid dynamics, Flow (Dynamics), Reynolds-averaged Navier–Stokes equations, Turbulence, Viscosity, Boundary layers, Eddies (Fluid dynamics), Simulation, Rotation, Pressure

Proceedings Papers

3D Simulation of Flow in a Vortex Cell Using RANS and Hybrid RANS-LES Turbulence Models

Tausif Jamal, D. Keith Walters, Varun Chitta

Proc. ASME. IMECE2017, Volume 7: Fluids Engineering, V007T09A061, November 3–9, 2017

Paper No: IMECE2017-70599

DOI: https://doi.org/10.1115/IMECE2017-70599

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Topics: Flow (Dynamics), Reynolds-averaged Navier–Stokes equations, Simulation, Turbulence, Vortices, Cavities, Boundary layers, Computer simulation, Energy dissipation, Large eddy simulation

Proceedings Papers

Simulation of a 3D Axisymmetric Hill: Comparison of RANS and Hybrid RANS-LES Models

Tausif Jamal, D. Keith Walters

Proc. ASME. FEDSM2016, Volume 1B, Symposia: Fluid Mechanics (Fundamental Issues and Perspectives; Industrial and Environmental Applications); Multiphase Flow and Systems (Multiscale Methods; Noninvasive Measurements; Numerical Methods; Heat Transfer; Performance); Transport Phenomena (Clean Energy; Mixing; Manufacturing and Materials Processing); Turbulent Flows — Issues and Perspectives; Algorithms and Applications for High Performance CFD Computation; Fluid Power; Fluid Dynamics of Wind Energy; Marine Hydrodynamics, V01BT25A010, July 10–14, 2016

Paper No: FEDSM2016-7772

DOI: https://doi.org/10.1115/FEDSM2016-7772

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Topics: Reynolds-averaged Navier–Stokes equations, Simulation, Flow (Dynamics), Computational fluid dynamics, Turbulence, Wakes, Boundary layers, Eddies (Fluid dynamics), Energy dissipation, Flow simulation

Proceedings Papers

Numerical Study of Vortical Separation From a Three-Dimensional Hill Using Eddy-Viscosity Models

Varun Chitta, Tausif Jamal, Keith Walters

Proc. ASME. AJKFluids2015, Volume 1: Symposia, V001T03A006, July 26–31, 2015

Paper No: AJKFluids2015-3223

DOI: https://doi.org/10.1115/AJKFluids2015-3223

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Topics: Eddies (Fluid dynamics), Separation (Technology), Viscosity, Flow (Dynamics), Boundary layer turbulence, Computational fluid dynamics, Reynolds-averaged Navier–Stokes equations, Turbulence, Boundary layers, Pressure gradient

Proceedings Papers

Thermal Effects on Micro-Sized Tesla Valves

Basil J. Paudel, Tausif Jamal, Scott M. Thompson, D. Keith Walters

Proc. ASME. FEDSM2014, Volume 2, Fora: Cavitation and Multiphase Flow; Fluid Measurements and Instrumentation; Microfluidics; Multiphase Flows: Work in Progress; Fluid-Particle Interactions in Turbulence, V002T19A006, August 3–7, 2014

Paper No: FEDSM2014-21929

DOI: https://doi.org/10.1115/FEDSM2014-21929

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Topics: Temperature effects, Valves, Temperature, Flow (Dynamics), Heat transfer, Computational fluid dynamics, Fluids, Reynolds number, Water, Boundary-value problems

Proceedings Papers

Numerical Investigation of Low-Reynolds Number Airfoil Flows Using Transition-Sensitive and Fully Turbulent RANS Models

Varun Chitta, Tausif Jamal, D. Keith Walters

Proc. ASME. FEDSM2014, Volume 1D, Symposia: Transport Phenomena in Mixing; Turbulent Flows; Urban Fluid Mechanics; Fluid Dynamic Behavior of Complex Particles; Analysis of Elementary Processes in Dispersed Multiphase Flows; Multiphase Flow With Heat/Mass Transfer in Process Technology; Fluid Mechanics of Aircraft and Rocket Emissions and Their Environmental Impacts; High Performance CFD Computation; Performance of Multiphase Flow Systems; Wind Energy; Uncertainty Quantification in Flow Measurements and Simulations, V01DT27A012, August 3–7, 2014

Paper No: FEDSM2014-21700

DOI: https://doi.org/10.1115/FEDSM2014-21700

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Topics: Airfoils, Flow (Dynamics), Reynolds-averaged Navier–Stokes equations, Turbulence, Boundary layers, Bubbles, Separation (Technology), Eddies (Fluid dynamics), Pressure, Suction

Proceedings Papers

Transitional and Turbulent Flow Modeling in a Tesla Valve

Scott M. Thompson, Tausif Jamal, Basil J. Paudel, D. Keith Walters

Proc. ASME. IMECE2013, Volume 7B: Fluids Engineering Systems and Technologies, V07BT08A027, November 15–21, 2013

Paper No: IMECE2013-65526

DOI: https://doi.org/10.1115/IMECE2013-65526

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Topics: Modeling, Turbulence, Valves, Flow (Dynamics), Reynolds number, Computational fluid dynamics, Computer simulation, Design, Flow instability, Microchannels

Proceedings Papers

A Numerical Investigation of Multi-Staged Tesla Valves

Scott M. Thompson, D. Keith Walters, Basil J. Paudel, Tausif Jamal

Proc. ASME. FEDSM2013, Volume 1A, Symposia: Advances in Fluids Engineering Education; Advances in Numerical Modeling for Turbomachinery Flow Optimization; Applications in CFD; Bio-Inspired Fluid Mechanics; CFD Verification and Validation; Development and Applications of Immersed Boundary Methods; DNS, LES, and Hybrid RANS/LES Methods, V01AT03A012, July 7–11, 2013

Paper No: FEDSM2013-16269

DOI: https://doi.org/10.1115/FEDSM2013-16269

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Topics: Valves, Reynolds number, Computer simulation, Design, Computational fluid dynamics, Flow (Dynamics), Flow control

Proceedings Papers

Numerical Simulation of a PAK-B Airfoil Using Fully Turbulent and Transition-Sensitive RANS Models

Tej P. Dhakal, Tausif Jamal, D. Keith Walters

Proc. ASME. IMECE2011, Volume 6: Fluids and Thermal Systems; Advances for Process Industries, Parts A and B, 897-905, November 11–17, 2011

Paper No: IMECE2011-64134

DOI: https://doi.org/10.1115/IMECE2011-64134

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Topics: Airfoils, Computer simulation, Reynolds-averaged Navier–Stokes equations, Turbulence, Reynolds number, Separation (Technology), Cascades (Fluid dynamics), Flow separation, Suction

Journal citation

NARROW

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

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

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

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

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

A Dynamic Time Filtering Technique for Hybrid RANS-LES Simulation of Non-Stationary Turbulent Flow

LES and Hybrid RANS-LES Simulation of a Pulsating Channel Flow

Computational Fluid Dynamics Study of Separated Flow Over a Three-Dimensional Axisymmetric Hill

3D Simulation of Flow in a Vortex Cell Using RANS and Hybrid RANS-LES Turbulence Models

Simulation of a 3D Axisymmetric Hill: Comparison of RANS and Hybrid RANS-LES Models

Numerical Study of Vortical Separation From a Three-Dimensional Hill Using Eddy-Viscosity Models

Thermal Effects on Micro-Sized Tesla Valves

Numerical Investigation of Low-Reynolds Number Airfoil Flows Using Transition-Sensitive and Fully Turbulent RANS Models

Transitional and Turbulent Flow Modeling in a Tesla Valve

A Numerical Investigation of Multi-Staged Tesla Valves

Numerical Simulation of a PAK-B Airfoil Using Fully Turbulent and Transition-Sensitive RANS Models

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