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Computational and Experimental Study of Effects of Guide Vanes and Tip Clearances on Performances of Axial Flow Fans

[+] Author Affiliations
Sungsu Lee, Hak-Sun Kim, Kwang-Hyun Nam, Jae Ik Hong

Chungbuk National University, Cheongju, Republic of Korea

Seung Hyun Chun

Hipres-Korea Company, Ltd., Kimhae, Republic of Korea

Paper No. HT-FED2004-56288, pp. 583-586; 4 pages
doi:10.1115/HT-FED2004-56288
From:
  • ASME 2004 Heat Transfer/Fluids Engineering Summer Conference
  • Volume 2, Parts A and B
  • Charlotte, North Carolina, USA, July 11–15, 2004
  • Conference Sponsors: Heat Transfer Division and Fluids Engineering Division
  • ISBN: 0-7918-4691-1 | eISBN: 0-7918-3740-8
  • Copyright © 2004 by ASME

abstract

The effects of guide vanes and tip clearances on the characteristics of axial flow fans are investigated both computationally and experimentally. Performance test of fans carried out in full scale shows considerable effects of tip clearance between rotor tip and duct on the characteristics of fans. The tested results are compared with the computation based on the finite volume method to solve the Navier-Stoke equations with k–ε turbulence model. The comparison shows good agreements between experimental and computational results. In addition, the effects of shape of guide vanes are numerically studied. The results shows that increased volume of separated region around the guide vane reduces the recovery of tangential component of kinetic energy in the wake, resulting in loss of efficiency.

Copyright © 2004 by ASME
Topics: Fans , Axial flow

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