4904 Observation of fluid-Dynamic Sound by means of an Optical Wave Microphone System
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Laser beam is finding increasing use on the information science. An Optical Wave Microphone System in the present study is an sound measurement equipment by laser beam and needs not use any particle in the flow. This device does not disturb in the measurement field, that is the merit of this device. For this reason, this technique is useful for the measurement of an jet noise. In this research, the reliability of an Optical Wave Microphone System for the measurement of jet flow was investigated and the downstream propagation of the broadband shock associated noise was analyzed.
