Abstract
Computational results to assess the effectiveness of non-axisymmetric endwall contouring in a low-speed axial fan were presented. The endwall was designed by geometric scaling of a prior optimized endwall. Results showed that the isentropic efficiency and total pressure rise coefficient at 100% design speed increased, and the performance of the contoured endwall (CEW) at near stall condition was better than that at the near choke point. Besides, the CEW got 1.27% isentropic efficiency and 2.97% total pressure rise coefficient increased at peak efficiency point. According to the mechanism of the improvement of CEW, the adverse pressure gradient (APG) had been reduced through the groove configuration near the leading edge of the suction surface. Moreover, there was an optimum depth for the groove configuration of this axial fan, which was equal to about 5.73% chord length at stator hub.
| Translated title of the contribution | Effect of non-axisymmetric endwall on secondary flow in axial fan |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 2766-2775 |
| Number of pages | 10 |
| Journal | Hangkong Dongli Xuebao/Journal of Aerospace Power |
| Volume | 33 |
| Issue number | 11 |
| DOIs | |
| State | Published - 1 Nov 2018 |
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