Numerical optimization of the tonal noise of a backward centrifugal fan using a flow obstruction
| Autor: | Yvon Goth, Franck Perot, Min-Suk Kim, Christian Chassaignon, Xavier Carniel, Vincent Le Goff |
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| Rok vydání: | 2013 |
| Předmět: |
Engineering
Acoustics and Ultrasonics business.industry Mechanical Engineering Noise reduction Acoustics Flow (psychology) Public Health Environmental and Occupational Health Aerospace Engineering Building and Construction Computational fluid dynamics Industrial and Manufacturing Engineering law.invention law Position (vector) Automotive Engineering Heat exchanger Noise control Upstream (networking) Centrifugal fan business Simulation |
| Zdroj: | Noise Control Engineering Journal. 61:307-319 |
| ISSN: | 0736-2501 |
| Popis: | This paper focuses on a passive noise control device based on a flow obstruction of a certain shape which can reduce a fan's Blade Passing Frequency tonal noise. The obstruction is located upstream of a centrifugal fan with a heat exchanger placed in between. Measurements performed at various operating conditions show that for an optimal position and orientation of the obstruction, the blade passing frequency noise is reduced by 10-13 dB. This paper uses a CFD/CAA approach for modeling this problem and numerically determining the optimized position of the obstruction. Simulations results are also used to provide a better understanding of the physical mechanisms involved in the noise reduction. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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