Volume 27 Issue 10
Oct.  2012
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TANG Hui, NING Fang-fei. Numerical investigation of effect of radial vane diffuser fillet on performance of centrifugal compressor[J]. Journal of Aerospace Power, 2012, 27(10): 2297-2306.
Citation: TANG Hui, NING Fang-fei. Numerical investigation of effect of radial vane diffuser fillet on performance of centrifugal compressor[J]. Journal of Aerospace Power, 2012, 27(10): 2297-2306.

Numerical investigation of effect of radial vane diffuser fillet on performance of centrifugal compressor

  • Received Date: 2012-03-28
  • Publish Date: 2012-10-28
  • The effect of the radial vane diffuser fillet on single-stage centrifugal compressor performance was studied.It was shown that when the radii of fillets were relatively small,the effect of the fillet can be negligible.Then further increasing the radius of the fillet,the mass flow at choke decreased and the performance of the compressor started to deteriorate.Upon these results,the investigation of optimizing the compressor aerodynamic performance by modifying the structure of the fillets was performed.Therefore,the fillet structure with no fillet or small fillets on suction side which can prevent blockage and radius-changing fillets on pressure side which can reduce or remove the separation zone on pressure surface was proposed.As a result,the performance of the compressor was improved obviously by using this structure.Besides,separated effects of fillets in casing and hub on single stage performance were discussed.It was revealed that the fillets near the hub played the major role in performance optimization.

     

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