Influence of Compressibility Modification to k-ε Turbulence Models for Supersonic Base Flow

- Journal title : International Journal of Aeronautical and Space Sciences
- Volume 13, Issue 2, 2012, pp.188-198
- Publisher : The Korean Society for Aeronautical & Space Sciences
- DOI : 10.5139/IJASS.2012.13.2.188

Title & Authors

Influence of Compressibility Modification to k-ε Turbulence Models for Supersonic Base Flow

Jeon, Sang-Eon; Park, Soo-Hyung; Byun, Yung-Hwan; Kwon, Jang-Hyuk;

Jeon, Sang-Eon; Park, Soo-Hyung; Byun, Yung-Hwan; Kwon, Jang-Hyuk;

Abstract

An improvement to the k- turbulence model is presented and is shown to lead to better agreement with data regarding supersonic base flows. The improvement was achieved by imposing a grid-independent realizability constraint in the Launder-Sharma k- model. The effects of compressibility were also examined. The numerical results show that the modified Launder-Sharma model leads to some improvement in the prediction of the velocity and turbulent kinetic energy profiles. Compressibility corrections also lead to better agreement in both the turbulent kinetic energy and the Reynolds stress profiles with the experimental data.

Keywords

Computational Fluid Dynamics;Turbulence Model;Compressibility Modification;Supersonic Base Flow;

Language

English

Cited by

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