Abstract
An experimental study has been undertaken to examine the influence of the blowing jet geometry on the effectiveness of the aft blowing technique for forebody vortex control. The experiments were conducted with a 3.0 tangent caliber ogive model at subsonic, laminar flow conditions. Asymmetric aft blowing was accomplished using both a single nozzle and a double nozzle configuration. Detailed surface pressure measurements on the model were obtained. The experimental results show that the height and the width of the blowing jet are important parameters that determine the effectiveness of aft blowing; a broad, lowly positioned blowing jet is found to be most effective for the forebody vortex control technique using aft blowing.
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