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shock wave smearing by passive control
Pages: 43-47,42
Year: Issue:  1
Journal: Journal of Thermal Science

Keyword:  transonic flows shock wave boundary layer interaction passive control.;
Abstract: <正>Normal shock wave, terminating a local supersonic area on an airfoil, limits its performance and becomes a source of high speed impulsive noise. It is proposed to use passive control to disintegrate the shock wave. Details of the flow structure obtained by this method are studied numerically. A new boundary condition has been developed and the results of its application are verified against experiments in a nozzle flow. The method of shock wave disintegration has been confirmed and detailed analysis of the flow details is presented. The substitution of a shock wave by a gradual compression changes completely the source of the high speed impulsive noise and bears potential of its reduction.
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