The noise generated from the internal flow in a centrifugal blower was computed by computational aero-acoustics (CAA). The sound sources were obtained by computational fluid dynamics (CFD), using large-eddy simulation (LES) to compute the turbulent flow in the centrifugal blower. The computed sound pressure level (SPL) with sound source from coarse mesh LES is overpredicted, while the computed SPL with sound source from fine mesh LES agrees fairly well with the experimental data. The peak of SPL at blade passing frequency (BPF) of 600 Hz can be somewhat captured by CAA with sound source from fine mesh CFD. However, due to the short computational time, the frequency resolution is not fine in CAA with sound source from fine mesh CFD, which may be the reason of underprediction of the peak value at BPF. Fluid forces acting on the impeller at the plane perpendicular to the axial direction play important role on the predicted SPL at BPF.
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ASME/JSME/KSME 2015 Joint Fluids Engineering Conference
July 26–31, 2015
Seoul, South Korea
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-5732-8
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Numerical Prediction of Noise From the Internal Flow in a Centrifugal Blower Available to Purchase
Chisachi Kato,
Chisachi Kato
University of Tokyo, Meguro-ku, Japan
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Yoshinobu Yamade,
Yoshinobu Yamade
Mizuho Information & Research Institute, Inc., Chiyoda-ku, Japan
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Yutaka Ohta,
Yutaka Ohta
Waseda University, Shinjuku, Japan
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Ryo Takayama
Ryo Takayama
Mizuho Information & Research Institute, Inc., Chiyoda-ku, Japan
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Yang Guo
University of Tokyo, Meguro-ku, Japan
Chisachi Kato
University of Tokyo, Meguro-ku, Japan
Yoshinobu Yamade
Mizuho Information & Research Institute, Inc., Chiyoda-ku, Japan
Yutaka Ohta
Waseda University, Shinjuku, Japan
Taku Iwase
Hitachi, Ltd., Hitachinaka, Japan
Ryo Takayama
Mizuho Information & Research Institute, Inc., Chiyoda-ku, Japan
Paper No:
AJKFluids2015-09194, V01AT09A005; 6 pages
Published Online:
April 4, 2016
Citation
Guo, Y, Kato, C, Yamade, Y, Ohta, Y, Iwase, T, & Takayama, R. "Numerical Prediction of Noise From the Internal Flow in a Centrifugal Blower." Proceedings of the ASME/JSME/KSME 2015 Joint Fluids Engineering Conference. Volume 1A: Symposia, Part 2. Seoul, South Korea. July 26–31, 2015. V01AT09A005. ASME. https://doi.org/10.1115/AJKFluids2015-09194
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