Study on Boundary Layer Control of Jet Issued from Divergent Nozzle

概要

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This report has aimed to control the boundary layer of jet flow. Especially, the research on the control of the separation point of the jet flow was done about the jet flow issued from the divergent nozzle in the region from subsonic jet flow to supersonic jet flow. The boundary layer of the jet flow was controlled by the control flow. And the position of the separation point was controlled by this method. Moreover, the frequency analysis of total pressures was done by the experiment. Furthermore, the numerical analysis was done to examine the separation point of the flow issued from the divergent nozzle. Consequently, an unsteady characteristic of the flow was clarified. And, it was clarified that the boundary layer control influenced the total pressure. As a result of the numerical analysis, it was found that the control flow influenced the separation of the flow, and the position of the separation point was different according to the stagnation pressure.
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