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KMID : 0896219970170010191
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Journal of Daegu Health College
1997 Volume.17 No. 1 p.191 ~ p.221
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Experimental study of passive shock wave strength control
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Choi Young-Sang
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Abstract
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A passive control for reducing the strength of shock wave was conducted experimentally in a 2.5×8㎠ supersonic wind tunnel. Tests are performed on roof mounted half circular arc to evaluate the effects of porosity, length and depth of cavity in passive control of shock wave on the attenuation of shock strength by reviewing the measured static pressures at the porous wall. Also the flow field was visualized by a Schlieren system. It was founded that in the present study the porosity of 8% produced the largest reduction of pressure rise across the shock wave and that for the same porosity, the strength of shock wave decreases with the increasings of the depth and length of cavity.
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