MU Digital Repository
Logo

C F D Analysis of a Centrifugal Fan for Performance Enhancement using Converging Boundary Layer Suction Slots

Karanth, Vasudeva K and Sharma, Yagnesh N (2009) C F D Analysis of a Centrifugal Fan for Performance Enhancement using Converging Boundary Layer Suction Slots. World Academy of Science, Engineering and Technology, 2009 (36). pp. 381-387. ISSN 2010-3778

[img]
Preview
PDF
C_FD_Analysis_of_a_Centrifugal_Fan_for.pdf

Download (1MB)

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.

Item Type: Article
Uncontrolled Keywords: Boundary layer suction converging slot, Flow separation, Sliding mesh, Unsteady analysis, Recirculation zone, Jets and wakes.
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 02 Jan 2013 07:24
Last Modified: 02 Jan 2013 07:24
URI: http://eprints.manipal.edu/id/eprint/77792

Actions (login required)

View Item View Item