Application of Radial-Splitters for Improved wide-angle diffuser performance in blowdown tunnel

Abstract

Severe flow separation in the 15:1 area-ratio, 38 degree total angle conical diffuse preceding the settling-chamber of an intermittent blowdown wind tunnel was eliminated by the use of a novel radial-splitter arrangement. As a consequence, the operating life of settling-chamber screens was greatly extended and test-section flow steadiness improved, with no penalty in the tunnel running time

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