Å.À.Gayev, S.Z.Shikhaliyev Inlet segment length of the duct with linear easily penetrable roughness |
Applied hydromechanics, Vol. 5 (77) ¹ 2, (2003) |
| Analysis of viscouse imcompressible flow entering a channel with symmetrical near-wall porous layers (penetrable roughnesses) has been provided based on numerical solution of two-dimensional stationary Navier-Stokes equations with the Reynolds number Re up to 1000. Dependence of the initial region length upon porous layer density and Re has been given. Its different behaviour for small and large Re means that boundary layer approximation is valid for only large Re. |
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| TEXT LANGUAGE: Russian |