Numerical analysis of a centrifugal fan for performance enhancement using boundary layer fences on the volute casing

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Flow within the centrifugal impeller and diffuser passage is a decelerating flow with an adverse pressure gradient along the stream wise path. This flow tends to be in a state of instability with flow separation zones. Several experimental attempts were made to assess the effectiveness of using boundary layer fences to realign the flow in the regions of flow separation to make the flow align itself into stream wise direction so as to minimize the loss and improve the overall efficiency of the diffusion process. With the development of CFD, a numerical whole field analysis of the effect of boundary layer fences in discrete regions of suspected separation points is possible. However it is found from the literature that there has been no significant attempt to use this tool to explore numerically, the utility of the fences on the flow field. This paper attempts to explore the effect of boundary layer fences corresponding to various geometrical configurations on the volute casing. It is shown from the analysis that the fences mounted on the initial half measured from the tongue of the volute casing surface improves the static pressure recovery across the fan. Fences provided elsewhere on the casing does not show any improvement in the performance of the fan.

Original languageEnglish
Title of host publicationICMET 2010 - 2010 International Conference on Mechanical and Electrical Technology, Proceedings
Pages38-42
Number of pages5
DOIs
Publication statusPublished - 30-11-2010
Event2010 International Conference on Mechanical and Electrical Technology, ICMET 2010 - Singapore, Singapore
Duration: 10-09-201012-09-2010

Conference

Conference2010 International Conference on Mechanical and Electrical Technology, ICMET 2010
CountrySingapore
CitySingapore
Period10-09-1012-09-10

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Mechanical Engineering

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  • Cite this

    Karanth, K. V., & Sharma, N. Y. (2010). Numerical analysis of a centrifugal fan for performance enhancement using boundary layer fences on the volute casing. In ICMET 2010 - 2010 International Conference on Mechanical and Electrical Technology, Proceedings (pp. 38-42). [5598488] https://doi.org/10.1109/ICMET.2010.5598488