Passive Scalar Transport Modeling for Hybrid RANS/LES Simulation
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- 作者：Zifei Yin ; Paul A. Durbin
- 关键词：Turbulence modeling ; Hybrid RANS/LES ; Detached eddy simulation ; Passive scalar transport ; Turbulent heat transfer ; Subgrid modeling
- 刊名：Flow, Turbulence and Combustion
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：98
- 期：1
- 页码：177-194
- 全文大小：
- 刊物类别：Engineering
- 刊物主题：Engineering Fluid Dynamics; Fluid- and Aerodynamics; Engineering Thermodynamics, Heat and Mass Transfer; Automotive Engineering;
- 出版者：Springer Netherlands
- ISSN：1573-1987
- 卷排序：98
文摘
A transport model for hybrid RANS/LES simulation of passive scalars is proposed. It invokes a dynamically computed subgrid Prandtl number. The method is based on computing test-filter fluxes. The formulation proves to be especially effective on coarse grids, as occur in DES. After testing it in a wall resolved LES, the present formulation is applied to the Adaptive DDES model of Yin et al. (Phys. Fluids 27, 025105 2015). It is validated by turbulent channel flow and turbulent boundary layer computations.