Campus Units

Aerospace Engineering

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

4-2019

Journal or Book Title

International Journal of Heat and Fluid Flow

Volume

76

First Page

26

Last Page

39

DOI

10.1016/j.ijheatfluidflow.2019.01.011

Abstract

The elliptic-blending, lag parameter approach is developed for the conventional k — ω, linear eddy viscosity model. A scalar parameter designed to represent the effects of stress-strain misalignment is used to scale the eddy viscosity. From the definition of the parameter, an additional transport equation is formed from an underlying Reynolds stress model. Balance between the near wall and away from wall terms of the new transport equation is maintained through a blending parameter which is a solution of an elliptic equation. The new model improves the prediction of separated flows, ranging from canonical to complex geometries, while maintaining numerical simplicity. Several two dimensional flow configurations have been tested with the proposed formulation and the results show improved agreement with existing experimental and DNS/LES data.

Comments

This is a manuscript of an article published as Biswas, Rajarshi, Paul A. Durbin, and Gorazd Medic. "Development of an elliptic blending lag k − ω model." International Journal of Heat and Fluid Flow 76 (2019): 26-39. DOI: 10.1016/j.ijheatfluidflow.2019.01.011. Posted with permission.

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Copyright Owner

Elsevier Inc.

Language

en

File Format

application/pdf

Available for download on Sunday, January 24, 2021

Published Version

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