Browse > Article
http://dx.doi.org/10.5050/KSNVE.2011.21.12.1138

Prediction of Internal Broadband Noise of a Centrifugal Fan Using Stochastic Turbulent Synthetic Model  

Heo, Seung (부산대학교 기계공학부)
Kim, Dae-Hwan (부산대학교 기계공학부)
Cheong, Cheol-Ung (부산대학교)
Kim, Tae-Hoon (LG전자 냉장고 사업부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.21, no.12, 2011 , pp. 1138-1145 More about this Journal
Abstract
The internal broadband noise of a centrifugal fan in a household refrigerator is predicted using hybrid CAA techniques based on stochastic turbulent synthetic model. First, the unsteady flow field around the centrifugal fan is predicted using computational fluid dynamics(CFD) method. Then, the turbulent flow field is synthesized by applying the stochastic turbulent synthetic technique to the predicted flow field. The aerodynamic noise sources of the centrifugal fan are modeled on a basis of the synthesized turbulent field. Finally, the internal broadband noise of the centrifugal fan is predicted using the boundary element method(BEM) and the modeled sources. The predicted noise spectrum is compared with the experimental data. It is found that the predicted result closely follows the experimental data. The proposed method can be used as an effective tool for designing low-noise fans without expensive computational cost required generally for the LES and DNS simulations to resolve the turbulence flow field responsible for the broadband noise.
Keywords
Broadband Noise; CFD; Centrifugal Fan; Stochastic Turbulent Synthetic Model; Refrigerator;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Velarde-Suarez, S. and Ballesteros-Tahadura, R., 2006, Experimental Determination of the Tonal Noise Sources in a Centrifugal Fan, Journal of Sound and Vibration, Vol. 295, pp. 782-796.
2 Kraichnan, R. H., 1970, Diffusion by a Random Velocity Field, The physics of Fluids, Vol. 13, No. 1 pp. 22-31.   DOI
3 Karweit, M., Blanc-Benon, P., Juve, D. and Comte-Bellot, G., 1988, Simulation of the Propagation of an Acoustic Wave Through a Turbulent Velocity Field, 17th International Union of Theoretical and Applied Mechanics, pp. 21-27.
4 Karweit, M., Blanc-Benon, P., Juvé, D. and Comte-Bellot, G., 1991, Simulation of the Propagation of an Acoustic Wave Through a Turbulent Velocity Field : A Study of Phase Variance, Journal of the Acoustical Society of America, Vol. 89, No. 1, pp. 52-62.   DOI
5 Bechara, W., Bailly, C. and Lafon, P., 1994, Stochastic Approach to Noise Modeling for Free Turbulent Flows, AIAA Journal, Vol. 31, No. 3, pp. 445-463.
6 Bailly, C., Lafon, P. and Candel, S., 1996, Computation of Noise Generation and Propagation for Free and Confined Turbulent Flow, AIAA Conference paper 96-1732.
7 Bauer, M., Zeibig, A. and Koltzsch, P., 2006, Application of the SNGR-model to Compute Trailing Edge Noise, Reasearch Report, Institute of Acoustics and Speech Communication.
8 Heo, S., Cheong, C. and Kim, T.-H., 2011, Development of Low-noise Centrifugal Fans for a Refrigerator Using Inclined S-shaped Trailing Edge, International Journal of Refrigerator, Vol. 34, Issue 8, pp. 2076-2091.   DOI   ScienceOn
9 Lee, S., Heo, S., Cheong, C., Kim, S. and Seo, M-Y., 2009, Computation of Internal BPF Noise of Axial Circulating Fan in Refrigerators, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 19, No. 5, pp. 454-461.   과학기술학회마을   DOI
10 Lee, S., Heo, S. and Cheong, C., 2010, The Prediction and Reduction of the Internal Bladepassing- frequency Noise of the Centrifugal Fan in a Refrigerator, International Journal of Refrigerator, Vol. 33, Issue 6, pp. 1129-1141.   DOI   ScienceOn
11 Ryu, J. W., Cheong, C., Kim, S. T. and Lee, S. G., 2005, Computational of Internal Aerodynamic Noise from a Quick-opening Throttle Valve Using Frequency-domain Acoustic Analogy, Applied Acoustic, Vol. 66, pp. 1278-1308.   DOI
12 Lighthill, M. J., 1952, On Sound Generated Aerodynamically, I. General Theory, Proc. Roy. Soc, Vol. 211A, pp. 564-587.
13 Curle, N., 1955, The Incluence of Solid Boundaryies on Aerodynamic Sound, Proc. Roy. Soc, Vol. 231A, pp. 505-514.
14 Cheong, C., Joseph, P., Park, Y. and Lee, S., 2008, Computation of Aeolian Tone from a Circular Cylinder Using Source Models, Applied Acoustic, Vol. 69, pp. 110-126.   DOI