Browse > Article
http://dx.doi.org/10.5293/KFMA.2004.7.6.038

Numerical Study on Tip Clearance Effect on Performance Characteristics of a Centrifugal Compressor for a R134a Turbo-Chiller  

Lee, Kyoung-Yong (한국기술교육대학교 대학원, 한국생산기술연구원)
Choi, Young-Seok (한국생산기술연구원 에너지시스템팀)
Park, Woon-Jean (한국기술교육대학교 기계공학부)
Publication Information
The KSFM Journal of Fluid Machinery / v.7, no.6, 2004 , pp. 38-44 More about this Journal
Abstract
In this study, the overall performance and the effect of the tip leakage flow of the centrifugal compressor with a refrigerant HFC-l34a were numerically studied using CFX-TASCflow. To study the effect of the tip leakage flow, the numerical study of the overall performance of HFC-l34a centrifugal compressor with a cascade diffuser was preceded and compared with the experimental result. Six different tip clearances were used to consider the influence of the tip clearance on the 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.
Keywords
R134a refrigerant; Turbo-Chiller; Centrifugal compressor; Tip leakage flow; Tip clearance; CFD;
Citations & Related Records
연도 인용수 순위
  • Reference
1 음학진, 강신형, 2003, '익단간극이 원섬압축기 성능에 미치는 영향에 관한 수치해석적 연구.' 대한기계학회 논문집 B권, pp. 389-397
2 이경용, 최영석, 박운진，2004, 'R134a 터보냉동기용 원심 압축기의 성능특성에 관한 수치해석적 연구' 유체기계저널, 제7권, 2호，pp. 14-20
3 Aungier, Ronald H., 2000, Centrifugal compressors : A Strategy for Aerodynamic Design and Analysis, ASME press. p. 18
4 김길영，이창중，이현구，2003, '터보냉동기용 압축기의 성능에 대한 실험적 연구 Part 1: 성능 측정시 고려할 인자들,' 2003 대한설비공학회 하계학술발표대회 논문집, pp. 718-723