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Investigation of flow dynamics and decrease of vortex noise inside volute of centrifugal fans

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Abstract

The characteristics of three-dimension flow dynamics inside the volute of a G4-73No.8D centrifugal fan was simulated numerically using a computational fluid dynamics(CFD) technique. The generation, evolution, and noise of the vortex were investigated when cylinder-shaped and cone-cylinder-shaped anti-vortex rings were added separately. Numerical results showed that large-scale vortices were broken effectively and the flow fields inside the fan were more uniform with the two anti-vortex rings installed. Experimental results indicated A-sound level and spectrum noise of the refitted fan decreased and the two anti-vortex rings were effective in decreasing vortex noise. The cone-cylinder-shaped anti-vortex ring was more effective than the cylinder-shaped one in breaking large-scale vortexes and decreasing vortex noise.

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Authors and Affiliations

  1. Department of Power Engineering, North China Electric Power University, Baoding, 071003, China

    Chunxi Li & Songling Wang

Authors
  1. Chunxi Li
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  2. Songling Wang
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Correspondence to Chunxi Li.

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Translated from Proceedings of the CSEE, 2006, 26(17): 117–121 [译自: 中国电机工程学报]

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Li, C., Wang, S. Investigation of flow dynamics and decrease of vortex noise inside volute of centrifugal fans. Front. Energy Power Eng. China 2, 235–240 (2008). https://doi.org/10.1007/s11708-008-0040-3

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  • DOI: https://doi.org/10.1007/s11708-008-0040-3

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