Journal article Open Access

CFD Analysis of a Centrifugal Fan for Performance Enhancement using Converging Boundary Layer Suction Slots

K. Vasudeva Karanth; N. Yagnesh Sharma

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  <identifier identifierType="DOI">10.5281/zenodo.1071632</identifier>
      <creatorName>K. Vasudeva Karanth</creatorName>
      <creatorName>N. Yagnesh Sharma</creatorName>
    <title>CFD Analysis of a Centrifugal Fan for Performance Enhancement using Converging Boundary Layer Suction Slots</title>
    <subject>Boundary layer suction converging slot</subject>
    <subject>Sliding mesh</subject>
    <subject>Unsteady analysis</subject>
    <subject>Recirculation zone</subject>
    <subject>Jetsand wakes.</subject>
    <date dateType="Issued">2009-12-23</date>
  <resourceType resourceTypeGeneral="JournalArticle"/>
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    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsVersionOf">10.5281/zenodo.1071631</relatedIdentifier>
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    <rights rightsURI="">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
    <description descriptionType="Abstract">Generally flow behavior in centrifugal fan is observed
to be in a state of instability with flow separation zones on suction
surface as well as near the front shroud. Overall performance of the
diffusion process in a centrifugal fan could be enhanced by
judiciously introducing the boundary layer suction slots. With easy
accessibility of CFD as an analytical tool, an extensive numerical
whole field analysis of the effect of boundary layer suction slots in
discrete regions of suspected separation points is possible. This paper
attempts to explore the effect of boundary layer suction slots
corresponding to various geometrical locations on the impeller with
converging configurations for the slots. The analysis shows that the
converging suction slots located on the impeller blade about 25%
from the trailing edge, significantly improves the static pressure
recovery across the fan. Also it is found that Slots provided at a
radial distance of about 12% from the leading and trailing edges
marginally improve the static pressure recovery across the fan.</description>
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