Reynolds stress budgets in Couette and boundary layer flows
نویسنده
چکیده
Reynolds stress budgets for both Couette and boundary layer flows are evaluated and presented. Data are taken from direct numerical simulations of rotating and non-rotating plane turbulent Couette flow and turbulent boundary layer with and without adverse pressure gradient. Comparison of the total shear stress for the two flows suggests that the Couette case may be regarded as the high Reynolds number limit for the boundary layer flow close to the wall. The direction of rotation is chosen so that it has a stabilizing effect, whereas the adverse pressure gradient is destabilizing. The pressure strain-rate tensor is in the Couette flow case presented for a split into slow, rapid and Stokes terms.
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