Abstract
The effect of the structure and behavior of pseudo shock wave on jet noise containing discrete frequency has been studied by digital image processing. The shock waves were visualized by Schlieren method or a high-speed camera, and the motion of the over-compression regions was studied by the digital image processing. It was clarified that the behavior of over compression regions was periodical, and these periods were closely related to the generation of discrete frequency noise.
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More From: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
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