Computational Simulation of Rotating Noise of Fan

摘要：

A rotating fan could produce noise of both broadband and discrete frequency.The discrete part typically consists of shaft frequency,blade passage frequency (BPF) and their higher harmonics.The shaft-order noise,which is mainly induced by unbalanced rotating,is often hard to be eliminated.In this paper,the rotating noise caused by geometric asymmetry is discussed and predicted.Analytic point force model is firstly used to predict the noise at points in different directions.Then a hybrid method based on computational fluid dynamic (CFD) simulation and FW-H equation is used to predict the noise of a simplified fan model.Compared with the case of symmetric rotating,a case of asymmetric rotating is studied,and the results show that geometric asymmetry could cause the increase of fan noise considerably at certain frequencies.

关键词： component rotating noise fan computational simulation aeroacoustic formatting style styling insert

作者: Tao Feng Jing Wang Bin Liu Nan Li Xue Wu

作者单位: School of Material and Mechanical Engineering Beijing Technology and Business University Beijing,China

会议类型: 国际会议

会议名称: 2011 International Conference on Computer and Network Engineering(ICCNE 2011)(2011年计算机与网络工程国际会议)

会议地点: 郑州

会议语种:英文

页码: 357-360

在线出版日期: 2011-06-17（万方平台首次上网日期，不代表论文的发表时间）