Study on the application of the variational multiscale method to LES/RANS hybrid models

为了发展新的不能明确区分区域和区域的LES/RANS混合湍流模式，重点研究了基于变分多尺度模式的最新模式--时变子尺度模式。虽然与VMS-LES模型相比，在槽道湍流情况下，两种模型在这一阶段并没有明显的差别。但是，积分点的数目还需要改进，在其他网格模式中也应该进行研究。

In order to develop new LES / RANS hybrid turbulence models that do not clearly distinguish the region of RANS and that of LES, time dependent subscales model which is the latest model based on the variational multiscale models is focused on. Although, in a turbulent channel flow, it is compared with VMS-LES model, significant difference between two models was not observed at this stage. However, the number of integral points should be improved and it also should be studied in the other mesh patterns.