A fully developed spanwise rotating turbulent channel flow has been numerically investigated utilizing large-eddy simulation. Our focus is to assess the performances of the dynamic variants of eddy viscosity models, including dynamic Vreman’s model (DVM), dynamic wall adapting local eddy viscosity (DWALE) model, dynamic σ (D) model, and the dynamic volumetric strain-stretching (DVSS) model, in this canonical flow. The results with dynamic Smagorinsky model (DSM) and direct numerical simulations (DNS) are used as references. Our results show that the DVM has a wrong asymptotic behavior in the near wall region, while the other three models can correctly predict it. In the high rotation case, the DWALE can get reliable mean velocity profile, but the turbulence intensities in the wall-normal and spanwise directions show clear deviations from DNS data. DVSS exhibits poor predictions on both the mean velocity profile and turbulence intensities. In all three cases, Dσ performs the best.
Large eddy simulation of spanwise rotating turbulent channel flow with dynamic variants of eddy viscosity model
Zhou Jiang, Zhenhua Xia, Yipeng Shi, Shiyi Chen; Large eddy simulation of spanwise rotating turbulent channel flow with dynamic variants of eddy viscosity model. Physics of Fluids 1 April 2018; 30 (4): 040909. https://doi.org/10.1063/1.5011236
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