Experimental and theoretical study of two-dimensional, turbulent, incompressible reattachment
Abstract
Turbulent reattaching flow downstream from a backward-facing step was tested using a two dimensional plane, incompressible configuration, with the ability to induce favorable or adverse pressure gradients in the potential flow. Detailed pressure and velocity measurements in this region make it possible to suggest general empirical laws whose efficiency relies on a thin initial separating boundary layer. Complete calculations were performed by obtaining a self-induced interaction by matching a wall dissipative layer with an inviscid and irrotational external flow. Except in the case of weak viscous interaction regions, an inverse calculation process is used to avoid singularities, according to Klineberg's method for transonic airfoils. The wall pressure distribution is obtained from an integral boundary layer calculation.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- October 1976
- Bibcode:
- 1976STIN...7710469L
- Keywords:
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- Incompressible Flow;
- Reattached Flow;
- Turbulent Flow;
- Two Dimensional Flow;
- Boundary Layers;
- Pressure Measurement;
- Viscosity;
- Fluid Mechanics and Heat Transfer