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http://dx.doi.org/10.5293/KFMA.2009.12.3.019

A Study on the Flow Characteristics and Noise Predictions around the Shroud Fan using the Aero-acoustic Noise Model  

Mo, Jang-Oh (ATES CFD 컨설팅 사업부)
Lee, Young-Ho (한국해양대학교 기계.정보 공학부)
Publication Information
The KSFM Journal of Fluid Machinery / v.12, no.3, 2009 , pp. 19-25 More about this Journal
Abstract
InThe purpose of this work is to analyze the flow characteristics and aerodynamic noise generated from a shroud fan at a constant 2,100 rpm using LES and FW-H noise model provided in the commercial code, FLUENT. Velocity distributions around the shroud fan obtained by using FLUENT code show good agreement with experimental results. The sound pressure level is decreased by about 6 dB as the distance from the fan increases twice. The directivity at 1st BPF shows a tendency of increasing SPL toward the axis of rotation.
Keywords
LES; BPF(Blade Passage Frequency); Discrete Noise; Broadband noise; Ffowcs-Williams and Hawkings model; Sound Pressure Level;
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