A new low reynolds number one-equation turbulence model based on a k-ω closure

Timothy J. Wray; Ramesh K. Agarwal

A new low reynolds number one-equation turbulence model based on a k-ω closure

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Accurate turbulence modeling remains a critical problem in the prediction capability of computational fluid dynamics. In this paper a new one equation eddy viscosity model is derived from k-ω closure. The ω-equation used in this derivation includes a cross diffusion term that allows the new model to switch between a k-ω or k-ε behavior. The new model is used to simulate the flow of several canonical separated flow cases. The open source software OpenFOAM is used for the flow calculations. It is shown that the new model increases the accuracy of flow simulations compared to the commonly used Spalart-Allmaras (SA) and Shear-Stress-Transport (SST) k-ω models for several of these flows.

Original language	English
Title of host publication	44th AIAA Fluid Dynamics Conference
Publisher	American Institute of Aeronautics and Astronautics Inc.
ISBN (Print)	9781624102899
State	Published - 2014
Event	44th AIAA Fluid Dynamics Conference 2014 - Atlanta, GA, United States Duration: Jun 16 2014 → Jun 20 2014

Publication series

Name	44th AIAA Fluid Dynamics Conference

Conference

Conference	44th AIAA Fluid Dynamics Conference 2014
Country/Territory	United States
City	Atlanta, GA
Period	06/16/14 → 06/20/14

Cite this

@inproceedings{65bf6747fc4148dda370dc6140ac2d0b,

title = "A new low reynolds number one-equation turbulence model based on a k-ω closure",

abstract = "Accurate turbulence modeling remains a critical problem in the prediction capability of computational fluid dynamics. In this paper a new one equation eddy viscosity model is derived from k-ω closure. The ω-equation used in this derivation includes a cross diffusion term that allows the new model to switch between a k-ω or k-ε behavior. The new model is used to simulate the flow of several canonical separated flow cases. The open source software OpenFOAM is used for the flow calculations. It is shown that the new model increases the accuracy of flow simulations compared to the commonly used Spalart-Allmaras (SA) and Shear-Stress-Transport (SST) k-ω models for several of these flows.",

author = "Wray, {Timothy J.} and Agarwal, {Ramesh K.}",

year = "2014",

language = "English",

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series = "44th AIAA Fluid Dynamics Conference",

publisher = "American Institute of Aeronautics and Astronautics Inc.",

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note = "44th AIAA Fluid Dynamics Conference 2014 ; Conference date: 16-06-2014 Through 20-06-2014",

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T1 - A new low reynolds number one-equation turbulence model based on a k-ω closure

AU - Wray, Timothy J.

AU - Agarwal, Ramesh K.

PY - 2014

Y1 - 2014

N2 - Accurate turbulence modeling remains a critical problem in the prediction capability of computational fluid dynamics. In this paper a new one equation eddy viscosity model is derived from k-ω closure. The ω-equation used in this derivation includes a cross diffusion term that allows the new model to switch between a k-ω or k-ε behavior. The new model is used to simulate the flow of several canonical separated flow cases. The open source software OpenFOAM is used for the flow calculations. It is shown that the new model increases the accuracy of flow simulations compared to the commonly used Spalart-Allmaras (SA) and Shear-Stress-Transport (SST) k-ω models for several of these flows.

AB - Accurate turbulence modeling remains a critical problem in the prediction capability of computational fluid dynamics. In this paper a new one equation eddy viscosity model is derived from k-ω closure. The ω-equation used in this derivation includes a cross diffusion term that allows the new model to switch between a k-ω or k-ε behavior. The new model is used to simulate the flow of several canonical separated flow cases. The open source software OpenFOAM is used for the flow calculations. It is shown that the new model increases the accuracy of flow simulations compared to the commonly used Spalart-Allmaras (SA) and Shear-Stress-Transport (SST) k-ω models for several of these flows.

UR - http://www.scopus.com/inward/record.url?scp=84903788369&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84903788369

SN - 9781624102899

T3 - 44th AIAA Fluid Dynamics Conference

BT - 44th AIAA Fluid Dynamics Conference

PB - American Institute of Aeronautics and Astronautics Inc.

T2 - 44th AIAA Fluid Dynamics Conference 2014

Y2 - 16 June 2014 through 20 June 2014

ER -

A new low reynolds number one-equation turbulence model based on a k-ω closure

Abstract

Publication series

Conference

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