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An investigation of separation near corner points in transonic flow

  • İBRAHİM TÜRKYILMAZ (a1)

Abstract

The incipient separation from a corner in steady two-dimensional transonic flow is studied based on viscous–inviscid interaction at high Reynolds number. Of particular interest is the investigation of the dependence of the critical deflection angle (when a well-attached flow turns into a separated flow) on the Kármán–Guderley parameter which characterizes the local flow field. In accordance with the procedure adopted, the analysis of the flow starts with the analysis of the boundary layer and then the solution of the Kármán–Guderley equation describing the inviscid part of the flow near the corner point is investigated. The analysis of the inviscid transonic flow is performed based on the hodograph method and new solutions are obtained corresponding to the present flow topologies. In these solutions, the transonic flow appears to be subsonic everywhere except at the sonic corner point. Then, the interaction problem is formulated using the triple-deck model. Lastly, a procedure based on a semi-direct solution of the governing equations using Newton iterations is developed to obtain the numerical solution of the interaction problem.

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An investigation of separation near corner points in transonic flow

  • İBRAHİM TÜRKYILMAZ (a1)

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