한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)
- 한국소음진동공학회 2001년도 추계학술대회논문집 I
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- Pages.282-287
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- 2001
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- 1598-2548(pISSN)
덕트 소음기의 실험적 연구 I (ISO 7235)
An Experimental Study on Ducted Silencers I (ISO 7235)
초록
The test facility has been manufactured to predict the dynamic insertion loss and the pressure drop for ducted silencers based on ISO 7235. The qualification test of the test facility is necessary for determining the dynamic insertion loss and the pressure drop of the test silencer, and is surveyed the reflection coefficient for an anechoic termination, the velocity profile near the upstream connection to the test silencer, the reduction of the system silencer and the limiting insertion loss due to the flanking sound transmission along the duct walls.
키워드