A Study on the Noise Characteristics According to Bellmouth Inlet Shape

벨마우스 흡입구 형상에 따른 원심팬의 소음 특성에 관한 연구

This article shows the study on the arresting sound occurrence due to the interaction of the centrifugal Fan and bellmouth suction flow with bellmouth height as variable. It has accomplished to measure of inlet noise and also to analysis suction pressure distribution through experiment and also using CFD. The main cause of sound occurrence was judged with the effect due to static pressure change of bellmouth surface.