The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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Numerical Prediction of a Performance Change in a Compressor Shrouded Impeller with Cavity Leakage Flow

슈라우드 임펠러에서 누설 유동이 압축기 성능에 미치는 영향에 대한 수치해석적 연구

  • Received : 2011.10.14
  • Accepted : 2012.02.21
  • Published : 2012.06.01
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Abstract

Generally the Shrouded type impeller is considered to free from the loss of tip leakage flow, but it is actually not possible to complete sealing between the rotating impeller and the sealing which is stay still. As a result, there is the possibility of flow leaking between impeller exit to entrance, especially with high pressure ratio compressor machine. The Cavity leakage flow is expected to influence negative effect on a machine performance and also inner flow structure. In this study, Impeller with shroud-casing gap leakage flow is simulated by numerical method (Using CFX 12.1). The influence of leakage flow on compressor performance and efficiency will be analysed, also detail flowfield change will posted.

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References

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