International Journal of Fluid Machinery and Systems

Korean Society for Fluid machinery (한국유체기계학회)
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Study of the Flow in Centrifugal Compressor

  • Xu, Cheng (Department of Mechanical Engineering, University of Wisconsin-Milwaukee) ;
  • Amano, Ryoichi Samuel (Department of Mechanical Engineering, University of Wisconsin-Milwaukee)
  • Received : 2010.07.27
  • Accepted : 2010.09.07
  • Published : 2010.09.30
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Abstract

Reducing the losses of the tip clearance flow is one of the keys in an unshrouded centrifugal compressor design and development because tip clearances are large in relation to the span of the blades and also centrifugal compressors produce a sufficiently large pressure rise in single stage. This problem is more acute for a low flow high-pressure ratio impeller design. The large tip clearance would cause flow separations, and as a result it would drop both the efficiency and surge margin. Thus a design of a high efficiency and wide operation range low flow coefficient centrifugal compressor is a great challenge. This paper describes a recent development of high efficiency and wide surge margin low flow coefficient centrifugal compressor. A viscous turbomachinery optimal design method developed by the authors for axial flow machine was further extended and used in the centrifugal compressor design. The compressor has three main parts: impeller, a low solidity diffuser and volute. The tip clearance is under a special consideration in this design to allow impeller insensitiveness to the clearance. A patented three-dimensional low solidity diffuser design method is used and applied to this design. The compressor test results demonstrated to be successful to extend the low solidity diffusers to high-pressure ratio compressor. The compressor stage performance showed the total to static efficiency of the compressor being about 85% and stability range over 35%. The test results are in good agreement with the design.

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References

  1. Boyce, M.P, 2003 “Centrifugal compressor: a basic guide,” PennWell Corparation, Tulsa, OK, USA.
  2. Japikse, D., 1996, “Centrifugal compressor design and performance,” Concepts ETI, VT, USA.
  3. Zangeneh, M., Vogt, D. and Roduner, C., 2002, “Improving a vaned diffuser for a given centrifugal impeller by 3D inverse design,” Presented at the ASME TURBO EXPO 2002, Amsterdam, Netherlands, June 3-6 2002. ASME paper no. GT-2002-30621.
  4. Amineni, N. K., and Engeda, A., 1997, “Pressure recovery in low solidity vaned diffusers for centrifugal compressors,” 97-GT-472.
  5. Senoo, Y., Hayami, H. and Ueki, H., 1983, “Low solidity trandem cascade diffusers for wide flow range centrifugal blowers,” 83-GT-3.
  6. Xu, C, Amano, R. S. and E. K. Lee, 2004, “ Investigation of an axial fan—Blade stress and vibration due to aerodynamic pressure field and centrifugal effects,” JSME International Journal, series b, vol. 47, No. 1, pp. 75-90. https://doi.org/10.1299/jsmeb.47.75
  7. Kenny, D. P. 1984, “The history and future of the centrifugal compressor in aviation gas turbine,” 1st Cliff Garrett Turbomachinery Award Lecture, Society of Automotive Engineers, SAE/SP-804/602.
  8. Xu, C. and Amano, R.S., 2009, “On the Development of Turbomachine Blade Aerodynamic Design System,” International Journal for Computational Methods in Engineering Science & Mechanics Vol. 10, Issue 3, pp. 186-196. https://doi.org/10.1080/15502280902795052
  9. Xu, C and Amano, R. S., 2002, “Turbomachinery Blade Aerodynamic Design and Optimization,” GT-2002-30541, 2002.
  10. Weber C R, and Koronowski, M E, 1987, “Meanline performance prediction of volutes in Centrifugal compressors,” ASME 31st Gas Turbine Conference and Exhibit, Dusseldorf, Germany, 86-GT-216.
  11. Dong, R., Chu, S., and Katz, J., 1997, “Effect of Modification to Tongue and impeller Geometry on Unsteady Flow, Pressure Fluctuations and Noise in a Centrifugal Pump,” ASME J. Turbomach., 119, PP. 506-515. https://doi.org/10.1115/1.2841152
  12. Arora, J.S., 1998, Introduction to Optimum Design, NY, MC Graw-Hill.
  13. D. Bonaiuti, A. Arnone, M. Ermini, and L. Baldassarre, “Analysis and Optimization of transonic centrifugal Compressor Impellers Using the Design of Experiments Technique,” G T-2002-30619.
  14. Xu, C. and Amano, R.S., “A Hybrid Numerical Procedure for Cascade Flow Analysis,” Numerical Heat Transfer, Part B, 2000, Vol. 37, No. 2, pp. 141-164. https://doi.org/10.1080/104077900275468
  15. Xu, C. and Amano, R.S., “Computational Analysis of Pitch-Width Effects on the Secondary Flows Of Turbine Blades,” Computational Mechanics, Vol. 34, No. 2, 2004, pp. 111-120. https://doi.org/10.1007/s00466-004-0558-0
  16. Harry, M. J., 1997, “The nature of Six Sigma quality,” Motorola Univ. Press., Shaumburg, Illinois.
  17. Xu, C. and Valentine D, 1997, “Diffuser for a centrifugal compressor,” US patent # 7581925.
  18. CFX Ltd, 2003, “CFX5, version 5.6,” UK.
  19. ASME, Performance Test Code on Compressors and Exhausters, PTC 10-97, 1997.

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