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

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;

Abstract
An improvement to the k-$\small{{\varepsilon}}$ 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-$\small{{\varepsilon}}$ 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
1.
거스트 영향이 고려된 랜덤 분포 풍하중에 대한 대형 샌드위치 패널 구조물의 유체-구조 연성해석,박대웅;

한국소음진동공학회논문집, 2013. vol.23. 12, pp.1035-1044
1.
Fluid-structure Interaction Analysis of Large Sandwich Panel Structure for Randomly Distributed Wind Load considering Gust Effects, Transactions of the Korean Society for Noise and Vibration Engineering, 2013, 23, 12, 1035
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