Some Numerical Studies of Turbulent Wake over Hills

摘要: A numerical model of turbulent flow over a hill is described, which employs new expression for the mixing-length: \(\ell _m^{ - 1} = 1/\lambda + {A_B}/z {A_s}\langle \partial U/\partial z\rangle /\langle w'\rangle\). Previous studies hills, in closure assumptions are based on an isotropic eddy viscosity proportional to square root local value kinetic energy and mixing-length dependent upon distance from lower boundary (Taylor[1] Richards & Taylor[2]), run much faster than second-order (Newly[3]), but fail correctly lee side obstacle. In particular, there was no recognizable wake (Britter, Hunt Richards[4]). It found that present blocking-shear (BSML) gives results compare better computation experimental data.