The elliptic relaxation model of Durbin (1993) for the Reynolds-stress redistribution is applied to prediction of free-surface turbulence for the first time. It enables us to investigate how well the Durbin's model reproduces the wall-blocking effect in an ideal situation fairly free from the viscous and mean-shear effects. Test calculations for fully-developed open-channel flows demonstrate that the proposed free-surface boundary condition for f{sub}(ij) does reproduce the correct asymptotic behavior of the Reynolds stress.
展开▼
