The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)
- Volume 1 Issue 1 Serial No. 1
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- Pages.49-57
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- 1998
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- 2287-9706(pISSN)
An Experimental Study on the Effects of Non-uniform Inlet Flows upon Tonal Radiation from an Axial-type Propeller Fan
불균일 난류 유입유동이 프로펠러형 송풍기의 톤소음에 미치는 영향에 대한 실험적 연구
- Published : 1998.09.01
Abstract
The acoustic signatures from a propeller fan under non-uniform inlet flow conditions were measured to reveal the mechanism for tonal radiation. Experimental studies were carried out by generating non-uniform turbulent flows with circumferential and radial components of harmonic incoming gust deliberately. This paper reports the measured acoustic power exponents and cross-spectra for circumferential and radial disturbances at a specified flow-rate coefficient.