Numerical predictions of fan noise have not been studied extensively. This is due to the scattering effect of the fan casing, duct and the difficulty in obtaining aerodynamic acoustic source. New method to predict the fan noise and performance is developed and used to calculate various fan noise problems. A vortex method is used to model the fan and to calculate the flow field. Acoustic pressures are obtained from the unsteady force fluctuations of the blades using an acoustic analogy. But the acoustic analogy can be applied only in the free field in general. In order to consider the solid boundary effects of the casing, the newly developed Kirchhoff-Helmholtz BEM (Boundary Element Method) is introduced. With the above-mentioned method, the flow field and sound field of centrifugal and axial fan were calculated. Reasonable results are obtained not only for the peak frequencies but also for the amplitudes of the tonal sound. Also, in the predicted sound field, we can see the scattering effect of duct and casing.
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ASME 2002 Joint U.S.-European Fluids Engineering Division Conference
July 14–18, 2002
Montreal, Quebec, Canada
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-3616-9
PROCEEDINGS PAPER
Development and Application of Fan Noise Prediction Method to Axial and Centrifugal Fan Available to Purchase
Duck-Joo Lee,
Duck-Joo Lee
Korea Advanced Institute of Science and Technology, Taejon, Korea
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Ki-Hoon Chung
Ki-Hoon Chung
Korea Advanced Institute of Science and Technology, Taejon, Korea
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Duck-Joo Lee
Korea Advanced Institute of Science and Technology, Taejon, Korea
Wan-Ho Jeon
LG Electronics, Seoul, Korea
Ki-Hoon Chung
Korea Advanced Institute of Science and Technology, Taejon, Korea
Paper No:
FEDSM2002-31209, pp. 987-992; 6 pages
Published Online:
February 24, 2009
Citation
Lee, D, Jeon, W, & Chung, K. "Development and Application of Fan Noise Prediction Method to Axial and Centrifugal Fan." Proceedings of the ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. Volume 2: Symposia and General Papers, Parts A and B. Montreal, Quebec, Canada. July 14–18, 2002. pp. 987-992. ASME. https://doi.org/10.1115/FEDSM2002-31209
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