The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
권호 표지
DOI QR코드

DOI QR Code

Numerical Analysis on the Performance Prediction of a Centrifugal Compressor with Relative Positions of Tandem Diffuser Rows

탠덤 디퓨저의 상대 위치에 따른 원심압축기 성능 예측

  • Published : 2004.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

The performance of a centrifugal compressor composed of an impeller, tandem diffuser rows and axial guide vanes has been predicted numerically and compared with available experimental results on its design rotational speed. The pitchwise-averaged mixing plane method was employed for the boundaries between rotor and stator to obtain steady state solutions. The overall characteristics showed difference according to the relative positions of tandem diffuser rows while the characteristics of impeller showed almost identical result. The numerical results agree with the measured data in respect of their tendency. It turned out that $0\%$ of relative positions is the worst case in terms of static pressure recovery and efficiency. According to the experimental results, some pressure fluctuations and malfunction of the compressor were observed for $75\%$ case. However, this numerical calculation using mixing plane method did not capture any of those phenomena. Thus, unsteady flow calculation should be performed to investigate the stability of the compressor caused by different diffuser configuration.

Keywords

References

  1. Osborne, C., Runstadler, P. W., Stacy, W. D., 1975, Aerodynamic and Mechanical Design of an 8:1 Pressure Ratio Centrifugal Compressor, NASA CR-134782
  2. Came, P. M., Herbert, M. V., 1980, Design and Experimental Performance of Some High Pressure Ratio Centrifugal Compressors, AGARD CP- 282
  3. Colantuoni, S., Colella, A., 1993, Aerodesign and Performance Analysis of a Radial Transonic Impeller for a 9:1 Pressure Compressor, ASME Journal of Turbomachinery , Vol 115, pp. 573-581
  4. 이대성 외 6인 , 2000, 헬리콥터용 요소부품 성능향상 기술개발, 한국항공우주연구원 최종보고서, UCN99270
  5. Kenny, D. P., 1972, Supersonic Radial Diffusers, AGARD Lecture Series 39
  6. Senoo, Y., 1981, Low Solidity Circular Cascade for Wide Flow Range Blower, Proceedings of Advanced Concepts in Turbomachinery, Fluid Dynamics Institute, Hannover-NH
  7. Hayami, H., Senoo, Y., Utsunomiya, K., 1990, Application of a Low-Solidity Cascade Diffuser to Transonic Centrifugal Compressor, ASME Journal of Turbomachinery, Vol 112, pp. 25-29
  8. Osborne, C, Strokes, J., 1988, The Application of Low Solidity Diffusers in Centrifugal Compressors, ASME FED. 69, pp. 89-101
  9. Bonaiuti, D., Amone, A., Hah, C, Hayami, H., 2002, Development of Secondary Flow Field in a Low Solidity Diffuser in a Transonic Centrifugal Compressor Stage, ASME Paper No. GT-2002-30371
  10. Japikse, D., 1992, Centrifugal Compressor Design and Perfonnance, Vol 1, Concepts ETI, USA, pp. 3-41-3-66 (11) Selezniov, K. P., Galerkin, Yu. B., 1982, Centrifugal Compressors, Mashinostroenie, Russia, pp. 138- 151
  11. Selezniov, K. P. , Galerkin, Yu. B., 1982, Centrifugal Compressors, Mashinostroenie, Russia, pp. 138- 151
  12. 이기수, 이은석, 검진한, 양수석, 2002, '임펠러, 디퓨저, 출구유도익을 포함한 원삼압축기의 성능 수치해석' 한국항공우주학회 춘계 학술발표회 논문집, pp. 503-508
  13. Kim, J., Yang, S. , 2002, Test of a 4.9:1 Pressure Ratio Centrifugal Compressor Stage, KARl TM-TM-2002-004