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Study on the performance of a centrifugal compressor considering running tip clearance.

Author(s) : KIM C., LEE H., YANG J., et al.

Type of article: Article, IJR article

Summary

A series of aero-thermo-mechanical analyses were carried out to predict the running tip clearance and the effects of impeller deformation on the performance using two different centrifugal compressors (blade type A and B). In operation, impeller deformation due to the combination of centrifugal force, aerodynamic pressure and thermal load results in non-uniform tip clearance profile. The results show that the maximum displacement occurs at the leading edge tip of the impeller blade but maximum stress takes place at the blade root of the impeller. A significant reduction of the tip clearance height has occurred at the leading edge and the trailing edge of the impeller. Due to the reduction of the tip clearance, the tip leakage flow has decreased by 19.4% and 16.2% in the blade type A and B, respectively. The polytropic efficiency of blade type A and B at operating condition has increased by 0.72% and 1.81%, respectively.

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Format PDF

Pages: 92-102

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Details

  • Original title: Study on the performance of a centrifugal compressor considering running tip clearance.
  • Record ID : 30017231
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 65
  • Publication date: 2016/05

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