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	An Improved Prediction Model of Vortex Shedding Noise from Blades of Fans
	Dou, H. S., Li, Z. H., Lin, P. F., Wei, Y. K., Chen, Y. N., Cao, W. B. and He, H. J.1
	2016
关键词	vortex shedding noise broadband noise boundary layer separation fan axial-flow fans Thermodynamics Engineering
中文摘要	The main source of the noise of an axial flow fan is the fluctuating pressure field on blade surfaces caused by the shedding of vortices at the trailing edge of blades. An analytical model to predict the vortex shedding noise generated at the trailing edge of blades of axial flow fans was proposed by Lee in 1993. In this model, for mathematical convenience, an idealized vortex street is considered. However, the agreement between the analytical results and the experimental data needs to be improved because of the simplification about the Karman vortex street in the wake of blade. In the present study, a modified model is proposed based on the prediction model by Lee. The boundary layer theory is used to analyze and calculate the boundary layer development on both the pressure and the suction sides of blades. Considering the effect of boundary layer separation on the location of noise source, the predicted overall sound pressure level compares favorably with the experimental data of an axial fan. In the calculation of A-weighted sound pressure level (LA), considering the effect of static pressure on radiate energy, the predicted broadband noise with the modified model compares favorably with the experimental data of a multiblade centrifugal fan.
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/113041]
专题	工程热物理研究所_Journal of Thermal Science_期刊论文
作者单位	1.[Dou Huashu 2.Li Zhehong 3.Lin Peifeng 4.Wei Yikun] Zhejiang Sci Tech Univ, Fac Mech Engn & Automat, Hangzhou 310018, Zhejiang, Peoples R China. [Chen Yongning 5.Cao Wenbin 6.He Haijiang] Zhejiang Yilida Ventilator Co Ltd, Taizhou 318056, Zhejiang, Peoples R China.
推荐引用方式 GB/T 7714	Dou, H. S., Li, Z. H., Lin, P. F., Wei, Y. K., Chen, Y. N., Cao, W. B. and He, H. J.. An Improved Prediction Model of Vortex Shedding Noise from Blades of Fans[J],2016.
APA	Dou, H. S., Li, Z. H., Lin, P. F., Wei, Y. K., Chen, Y. N., Cao, W. B. and He, H. J..(2016).An Improved Prediction Model of Vortex Shedding Noise from Blades of Fans..
MLA	Dou, H. S., Li, Z. H., Lin, P. F., Wei, Y. K., Chen, Y. N., Cao, W. B. and He, H. J.."An Improved Prediction Model of Vortex Shedding Noise from Blades of Fans".(2016).

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