한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)
- 한국소음진동공학회 2000년도 춘계학술대회논문집
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- Pages.1667-1674
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- 2000
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- 1598-2548(pISSN)
등간격으로 배열된 마이크로폰을 이용한 관내 유량측정 방법
A Method for the Measurement of Flow Rate in Pipe using a Microphone Array
초록
A new method is proposed to measure the flow rate in a pipe by multiple measurements of acoustic pressure using a microphone array. It is based on the realization that variation in flow velocity affects the change in wave number. The method minimizes measurement random errors and sensor mismatch errors thereby providing practically realizable flow rate measurement. One of the advantages of the method is that it does not obstruct the flow field and can provide the time-spatial mean flow rate. Numerical simulations and experiments were conducted to verify the utility of this method.