Features of a reattaching turbulent shear layer subject to an adverse pressure gradient

摘要: Experimental data have been obtained in an incompressible turbulent flow over a rearward-facing step with superimposed adverse pressure gradient. Mean velocities, Reynolds stresses and triple-products measured by laser Doppler velocimeter are presented for two cases of Mixing lengths, eddy viscosities, production, convection, diffusion, dissipation terms extracted from the data. These compared various mixing length eddy-viscosity turbulence models. Numerical calculations incorporating k-epsilon algebraic-stress models When determining quantities engineering interest, modified model (ASM) is significant improvement unmodified ASM