A Numerical Approach to Subsonic Viscous-Inviscid Interaction

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In this paper is presented a numerical approach to a subsonic viscous-inviscid interaction involving a boundary layer separation. The formulation is made in such a way that a linear equation for the stream function obtained through a small perturbation scheme for the inviscid flow and integral forms of the boundary layer equations for the viscous flow constitute a system of basic equations to be solved simultaneously in a flow field. In order to demonstrate the applicability of the present approach, subsonic flows past a divergent wall are solved using an iterative scheme based on the SLOR method and the effects of various parameters on the interaction phenomenon are examined in detail. It is shown that the solution can be obtained without any difficulty even at the separation point. The results indicate that the present approach is capable of predicting the viscous-inviscid interaction involving flow separation.
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