유체기계공업학회:학술대회논문집

Korean Society for Fluid machinery (한국유체기계학회)
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Numerical Study on Tip Clearance Effect on Performance Characteristics of a Centrifugal Compressor for a R134a Turbo-Chiller

R134a 터보냉동기용 원심압축기의 익단간극이 성능특성에 미치는 영향에 관한 수치해석적 연구

  • 이경용 (한국기술교육대학교 대학원, 한국생산기술연구원) ;
  • 최영석 (한국생산기술연구원 청정설계기술팀) ;
  • 박운진 (한국기술교육대학교 기계공학부)
  • Published : 2003.12.05
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Abstract

In this study, the overall performance and the effect of the tip leakage flow of the centrifugal compressor with the refrigerant HFC-l34a were numerically studied using CFX-TASCflow. To study the effect of a tip leakage flow, the numerical study of the overall performance of HFC-l34a centrifugal compressor with a cascade diffuser was preceded and compared with experimental result. Six different tip clearances were used to consider the influence of a tip clearance on performance. The tip leakage flow was illustrated for qualitative discussion. The results obtained in this study can be applied to the determination of the cold clearance.

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