If the grid is too coarse to resolv

If the grid is too coarse to resolve the laminar sublayer, then the LES turbulence model assumes that the centroid of the wall-adja-cent cell falls within the logarithmic region of the boundary
layer, and wall boundary conditions employ a law-of-the-wall approach

結果 (中文) 1:

如果网格太粗，解决层流子层，大涡模拟湍流模型假定其质心，墙-偏分单元格位于边界的对数区域之内层和壁边界条件采用墙法的方法

結果 (中文) 3:

如果网格太粗解决层流底层，然后LES模型假定墙相邻的细胞的质心落的边界
层对数的区域内，与壁面边界条件采用壁定律的方法