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	Influence of the Karman Vortex Street on the Broadband Noise Generated from a Multiblade Fan
	Souichi SASAKI1; Yoshio KODAMA; Hidechito HAYASHI; Makoto HATAKEYAMA2
刊名	JOURNAL OF THERMAL SCIENCE
	2005
卷号	14期号:3页码:198,205
关键词	Aerodynamic Acoustic Karman Vortex Street Turbo Machinery Blade|internal|Blade|internal Flow
英文摘要	In the prediction theory for the broadband noise generated from a multiblade fan, the vortices in the Karman vortex street was divided into n pieces. The frequency distribution of the noise was estimated so that the Strouhal number could become constant even if the wake is spread by the diffusion. From the results of the measurement of the internal flow of the fan, it was found that the noise was related to the wake characteristics of the specific location in the scroll casing where the relative flow velocity was high. The noise operating in the vicinity of the maximum efficiency point of the fan was distributed over the domain from 500 Hz to 1250 Hz. It was experimentally proved that the influence of the Karman vortex street on the noise in the domains of high and low frequencies did not exist when the distribution of the estimated sound pressure level corresponded to the measured broadband noise.
公开日期	2013-03-11
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/53214]
专题	工程热物理研究所_Journal of Thermal Science
推荐引用方式 GB/T 7714	Souichi SASAKI1,Yoshio KODAMA,Hidechito HAYASHI,et al. Influence of the Karman Vortex Street on the Broadband Noise Generated from a Multiblade Fan[J]. JOURNAL OF THERMAL SCIENCE,2005,14(3):198,205.
APA	Souichi SASAKI1,Yoshio KODAMA,Hidechito HAYASHI,&Makoto HATAKEYAMA2.(2005).Influence of the Karman Vortex Street on the Broadband Noise Generated from a Multiblade Fan.JOURNAL OF THERMAL SCIENCE,14(3),198,205.
MLA	Souichi SASAKI1,et al."Influence of the Karman Vortex Street on the Broadband Noise Generated from a Multiblade Fan".JOURNAL OF THERMAL SCIENCE 14.3(2005):198,205.

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