Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Sensitivity Analysis on Off-Design Performance of Centrifugal Compressor Due to the Parameters of Two-zone Model and TEIS Model

두영역 모델과 직렬두요소 모델의 변수에 의한 원심 압축기 탈설계 성능의 민감도 분석

  • 윤성호 (포항공과대학교 대학원 기계공학과) ;
  • 백제현 (포항공과대학교 기계공학과)
  • Published : 2000.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, an off-design performance analysis procedure is developed based on Two-zone model and TEIS model. In Two-zone model, there are both primary zone and secondary zone for an isentropic core flow and an average of all non-isentropic streamtubes respectively. The level of the core flow diffusion in an impeller is calculated by using TEIS model which regards the impeller as two successive rotating elements in series. At impeller exit, the mixing process occurs with an increase in entropy, that is to say, a decrease in total pressure. In loss models including Two-zone and TEIS model, some empirical parameters have a great influence on overall performance curve. So these parameters' influences on the overall performance curve are investigated and compared with experimental data.

Keywords

References

  1. Galvas, M. R., 1973, 'FORTRAN Program for ？Predicting Off-Design Performance of Centrifugal Compressors,' NASA TN D-7487
  2. 오형우,윤의수,정명균,1997,'원심 압축기의 성능 예측 및 손실 해석,' 대한 기계학회 논문집 제21권 제6호,pp.804-812
  3. Eckardt, D., 1976, 'Detailed Flow Investigation Within a High Speed Centrifugal Compressor Impeller,' ASME Journal of Fluids Engineering, Vol. 98, pp. 390 - 402
  4. Eckardt D., 1980, 'Flow Field Analysis of Radial and Backswept Centrifugal Compressor Impellers - Part 2 ; Flow Measurements using a Laser Velocitimeters,' 25th ASME Gas Turbine Conference, pp. 77 - 86
  5. Japikse, D, 1985, 'Assessment of Single- and Two-Zone Modeling of Centrifugal Compressors. Studies in Component Performance ; Part 3,' ASME 85·GT-73
  6. Japikse, D., 1996, 'Centrifugal Compressor Design and Performance,' Concepts ETI
  7. Wiesner F. J. 1967, 'A Review of Slip Factors for Centrifugal Impellers,' Trans. ASME Journ. of Eng. Power, pp. 558-572
  8. Daily J. W, Nece R. E., 1960, 'Chamber dimension effects on induced flow and frictional resistance of enclosed rotating disks,' ASME No. 59-HYD-9, Trans. ASME Journ. Basic Eng., pp. 217-232
  9. Stanitz, 1952, 'One-dimensional Compressible Flow in Vaneless Diffusers of Radial and Mixed Flow Centrifugal Compressors Including Effects of Friction, Heat Transfer and Area Change,' NASA TN-2610
  10. Oh JongSik, 1998, 'Numerical Investigation of Slip factor for Centrifugal Impellers,' Proc. of 4th KSME-JSME Fluid Eng. Conf., pp. 113 - 116
  11. 최영석,심재혁,강신혁,1998,'두영역 모델을 사용한 원심펌프의 성능예측,' 1998 유체기계 연구개발 발표회 논문집,pp.33-41
  12. 조성국,강신형,1998,'소형 원심 압축기의 성능평가에 대한 실험적 연구,' 대한기계학회 논문집, 제22권 8호,pp.1052-1063
  13. 윤성호,백제현,1999,'깃 없는 디퓨저를 포함한 원심 압축기의 탈설계 해석,' 대한기계학회 추계학술대회,pp.494-499