Development of a low-noise cooling fan for an alternator using numerical and doe methods |
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| Authors: | W. Kim W. -H. Jeon N. Hur J. -J. Hyun C. -K. Lim S. -H. Lee |
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| Affiliation: | (1) The Economics and Management Department, The Open University of Israel, Tel-Aviv, Israel;(2) Department of Economics, University of California, 549 Evans, Hall, Berkeley, CA 94709, USA;(3) Recanati Graduate School of Business Administration, Tel Aviv University, Tel-Aviv, Israel; |
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| Abstract: | An alternator, which converts mechanical rotational energy into electrical energy, is an important component of a vehicle. Alternators operate over a broad range of rotational speeds, typically from 3,000 RPM to 18,000 RPM, which demands a cooling fan producing sufficient airflow, ideally with a minimum of noise. In the current study, an optimized alternator-cooling fan was developed through a linked DOE(Design OF Experiment) process and numerical analysis. The SC/Tetra and FlowNoise S/W programs were used to calculate flow rates and noise levels, respectively, for the newly developed fan. Compared with original model, the numerical results predicted a 3 dBA noise reduction; the measured reduction was 4 dBA. |
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