Paper Title:
Investigation of G4-73 Centrifugal Fan Airfoil Stall Characteristics
  Abstract

It’s of great significance for safe and reliable operation of fan to research on the stall characteristics of the airfoil. The 2D non-compressible Reynolds-Averaged Navier-Stokes equations was built to simulate the flow around the airfoil of G4-73No.8D centrifugal fan, a detailed numerical simulation under different angles has been carried out which based on the Realizable turbulence model with Fluent. The numerical results show that the smaller of the flow rate, the bigger incidence angle is, when the incidence angle is bigger than the critical incidence angle, the suction side stall appears. According simulation the airfoil stall appears when the incidence angle is -28°, with the increasing of the negative incidence angle, the separation point gradually moves to the leading edge. There is a strong vortex which locates at suction side =0.5,the alternating stress on the blade which caused by vortex will make the blade fatigue. If the incidence angle is less than -20°,there is no flow separation, therefore, to ensure the safe operation of the fan, the incidence angle should be less than -20°.

  Info
Periodical
Advanced Materials Research (Volumes 383-390)
Chapter
Chapter 17: Manufacturing Process Planning and Scheduling
Edited by
Wu Fan
Pages
4221-4226
DOI
10.4028/www.scientific.net/AMR.383-390.4221
Citation
S. L. Wang, Z. Liu, L. Zhang, "Investigation of G4-73 Centrifugal Fan Airfoil Stall Characteristics", Advanced Materials Research, Vols. 383-390, pp. 4221-4226, 2012
Online since
November 2011
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Price
$32.00
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