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http://dx.doi.org/10.5050/KSNVN.2008.18.9.952

Fan Noise Prediction Method of Air Cooling System  

Lee, Chan (수원대학교 기계공학과)
Kil, Hyun-Gwon (수원대학교 기계공학과)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.18, no.9, 2008 , pp. 952-960 More about this Journal
Abstract
Fan noise prediction method is presented for air conditioning, automobile and electronic cooling system applications where fan acts as an internal equipment having very complicated flow interaction with other various system components. The internal flow paths and distribution in the fan-applied systems such as computer or air conditioner are analyzed by using the FNM(flow network modeling). Fan noise prediction method comprises two models for the discrete frequency noise due to rotating steady aerodynamic lift and blade interaction and for the broadband noise due to turbulent boundary layer and wake vortex shedding. Based on the fan operation point predicted from the FNM analysis results and fan design parameters, the present far noise model predicts overall sound pressure level and spectrum. The predictions for the flow distribution, the fan operation and the noise level in air cooling system by the present method are well agreed with 3-D CFD and actual noise test results.
Keywords
Flow Resistance; FNM; BPF Noise; Broadband Noise;
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Times Cited By KSCI : 1  (Citation Analysis)
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