Multiscale large eddy simulation of scalar transport in turbulent channel flow

摘要：

The multi-scale large eddy simulation (MLES) has been performed to the scalar transport in turbulent channel ow. The subgrid stress is closed by the “small-small, “large-small and “small- large eddy viscosity model, respectively, and the subgrid scalar ux is closed by the corresponding variants of the eddy diffusivity model. By the comparison with the results obtained by direct numerical simulation, it is shown that the multiscale approach is also effective for the large eddy simulation of scalar turbulence, but the in uence of different multiscale formulation on scalar turbulence is different from that on velocity field.

关键词： multiscale large eddy simulation scalar turbulence turbulent channel flow

作者: C.X.Xu Z.Y.Wang G.X.Cui Z.S.Zhang

作者单位: Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China

会议类型: 国际会议

会议名称: The Fifth International Conference on Fluid Mechanics(第五届国际流体力学会议)

会议地点: 上海

会议语种:英文

在线出版日期: 2007-08-15（万方平台首次上网日期，不代表论文的发表时间）