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Elliptic-blending second-moment turbulence closure with using an algebraic anisotropic dissipation rate tensor model

Jong Keun Shin
Department of Automotive Engineering, Hanzhong University, 119, Jiheung-dong, Donghae, Kangwondo 240-713, Korea

Jeong Soo An
Department of Mechanical Engineering, Korea University, 1, Anam-dong, Sungbuk-ku, Seoul 136-701, Korea

Young Don Choi
Department of Mechanical Engineering, Korea University, 1, Anam-dong, Sungbuk-ku, Seoul 136-701, Korea

Resumo

This study describes the amendment of an algebraic anisotropic dissipation rate model (ADRM) and its application to various turbulent flows to test the model's performance. Modeling anisotropies for the turbulence dissipation rate is considered by an analysis of the exact transport equation for the dissipation rate tensor. The second-moment closure, which is based on the explicit amended ADRM, is proposed and it is closely linked to the elliptic-blending model that is used for the prediction of Reynolds stresses.
The prediction results are directly compared to the DNS and the LES to assess the performance of the new model predictions and to show their reasonable agreement with the DNS and LES data for all the flow fields that were analyzed for the present study.