Shear-modified sub-grid model and its applications to turbulent channel flow

This paper presented a sub-grid model called shear-modified eddy viscosity model,which modifies eddy viscosity coefficient with use of strong shear near the wall.This model can make eddy viscosity coefficient satisfy the wall modification automatically.Thus,the eddy viscosity approaches to zero in the proximity of the wall in the case of zero eddy viscosity coefficient in the place without fluctuation.Numerical simulation was performed in the situation of blow-suction,no blow-suction,low Reynolds number and high Reynolds number.The result is consistent with the direct numerical simulation(DNS) by comparison.