Theoretical and experimental investigation of design parameter effects on the slip phenomenon and performance of a centrifugal compressor

Document Type : Article

Authors

School of Mechanical Engineering, Sharif University of Technology, Tehran, P.O. Box 11155/8639, Iran

Abstract

There are many pieces of research considering slip phenomenon in centrifugal compressors to drive equations for prediction of the slip factor. Inevitably, some simplifications have been imposed on the flow field characteristics and effects of many parameters have been neglected. In this research slip phenomenon is investigated experimentally and numerically in one centrifugal compressor with complex blade curves and splitter blades considering the main effective parameters. Three-dimensional simulation of the compressor viscus flow field with suitable turbulence method was performed using CFD methods. Experimental work was carried out at several rotational speeds and mass flow rates which enabled slip factor results of the compressor as well as, approving accuracy of the simulation results. Effect of main parameters such as rotational speed, mass flow rate, blade number, blade exit angle, diffuser design and tip clearance on slip phenomenon were studied. It was observed that slip factor increases, as rotational speed and flow rate increase. Also changing the blade number from 6 to 9 in constant rotational speed and mass flow rate, caused 27 percent increase in slip factor. For a detailed insight, a variation of performance parameters such as pressure ratio and isentropic efficiency with slip factor were investigated, as well.

Keywords


References:
1. Caridad, A.J. and Kenyery, F. "Slip factor for centrifugal impellers under single and two-phase flow conditions", Journal of Fluids Engineering, 127, pp. 317-321 (2005).
2. Whitfield, A. and Baines, N., Design of Radial Turbomachines, Harlow: Longman Scientific and Technical,  pp. 83-134 (1990).
3. Ball, A.G., Bell, A.H., and Mann, L.B. "The development of the Chrysler automotive centrifugal compressor", In SAE International Congress And Exposition of Automotive Engineering (1961).
4. Wiesner, F.J. "A review of slip factors for centrifugal impellers", Journal of Engineering for Power, 89(4), pp. 558-566 (1967).
5. Aungier, R.H., Centrifugal Compressor: A Strategy for Aerodynamics Design and Analysis, New York, ASME Press (2000). 
6. Stodola, A., Steam and Gas Turbines, New York, McGraw-Hill (1927).
7. Wislicenus, F.G., Fluid Mechanics of Turbomachinery, New York, McGraw-Hill (1947).
8. Sheets, H.E. "The flow through centrifugal compressors and pumps", In Trans. Amer. Soc. Mech. Engrs, 72, p. 1009 (1950).
9. Stanitz, D.J. "Some theoretical aerodynamic investigations of impellers in radial and mixed-flow centrifugal compressors", In ASME, Cleveland, Ohio (1952).
10. Zhang, Y.L., Zhu, Z.C., Dou, H.S., Cui, B.L., Li, Y., and Xiao, J.J. "A method to determine the slip factor of centrifugal pumps through experiment", International Journal of Turbo & Jet-Engines, 32(1), pp. 59-64 (2015).
11. Whitfield, A. "Slip factor of a centrifugal compressor and its variation with  flow rate", Proceedings of the Institution of Mechanical Engineers, 188, pp. 415-421 (1974).
12. Von Backstrom, T. "A compact equation for the prediction of eddy-induced slip in centrifugal impellers", IMechE Part A: J. Power and Energy, 220(8), pp. 911-915 (2006).
13. Von Backstrom, T. "A unified correlation for slip factor in centrifugal impellers", Journal of Turbomachinery, 128(1), pp. 1-10 (2006).
14. Ji, C., Zou, J., and Fu, X. "A new correlation for slip factor in radial and mixed-flow impellers", Journal of Power and Energy, 225(1), pp. 114-119 (2010).
15. Elsheshtawy, A. "Numerical study of slip factor in centrifugal pumps and study factors affecting its performance", In International Conference on Mechanical Engineering and Material Science (2012).
16. Hung, J. and Lou, K. "Numerical investigations of slip phenomena in centrifugal compressor impellers", Turbo Jet-Engines, 30(1), pp. 123-132 (2013).
17. Xuwen, Q., Japikse, D., and Zhai, J. "Analysis and validation of a unified slip factor model for impellers at design and off-design conditions", J. Turbomach., 133(4), 041018 (Oct. 2011).https://doi.org/10.1115/1.4003022.
18. Ntoko, N. "A dynamical basis for slip in centrifugal impellers", IMechE: Power and Energy, 226(5), pp. 706-711 (2012).
19. Ghaderi, M., Najafi, A., and Nourbakhsh, A. "Improving slip factor prediction for centrifugal pumps using artificial neural networks", IMechE Part A: Power and Energy, 229(4), pp. 431-438 (2015).https://doi.org/10.1177/0957650915580884.
20. Plfeiderer, C.F., Die Kreiselpumpen fur Flussigkeiten und Gase, Berlin: Springer (1961).
21. Dean, C.R. "On the unresolved fluid dynamics of the centrifugal compressor", Adv Centrifugal Compressors, ASME Special Publication, pp. 1-55 (1971).
22. Van den Braembussche, R., Design and Analysis of Centrifugal Compressors, von Karman Institute, Belgium: ASME Press and John Wiley & Sons Ltd (2019).
23. Hajilouy Benisi, A., Rad, M., and Shahhosseini, M.R. "Flow and performance characteristic of twin-entry radial turbine under full and extreme partial admission conditions", Scientia Iranica: Mechanical Engineering, 79, pp. 1127-1143 (2003).
24. Doost Mohamadi, A., Hajilouy Benisi, A., and Mojaddam, M. "Experimental & numerical investigation of losses in centrifugal compressor components", In ASME: Turbine Technical Conference and Exposition, San Antonio, Texas (2013).
25. Mojaddam, M. and Hajilouy-Benisi, A. "Experimental and numerical  flow field investigation through two types of radial 
ow compressor volutes", Experimental Thermal and Fluid Science, 78, pp. 137-146 (2016).
26. Performance test code for compressors and exhausters, ASME (1997).
27. Test uncertainty, ASME (2013).
28. Pressure measurement: Instruments and apparatus supplement, ASME (2010).
29. PTC 19.3 TW thermowells, ASME (2016).
30. Brun, K. and Kurz, R. "Measurement uncertainties encountered during gas turbine driven compressor field testing", Journal of Engineering for Gas Turbines and Power, 123, pp. 62-69 (2001).
31. Nakra, B.C. and Chaudhry, K.K., Instrumentation, Measurement And Analysis, New Delhi, McGraw-Hill (2003).
32. Mojaddam, M., Hajilouy Benisi, A., and Movahhedy, M. "Optimal design of the volute for a turbocharger radial flow compressor", In ASME: Turbine Technical Conference and Exposition, Dusseldorf (2014).
33. Versteeg, H. and Malalasekera, W., An Introduction to Computational Fluid Dynamics: The Finite Volume Method, 2nd Edition, Harlow, Longman Scientific & Technical (2007).
34. Rodrigues, T.T. "Tubulence modelling evaluation for reciprocating compressor simulation", In International Compressor Engineering Conference, Purdue University (2014).
35. Moussavi, S.A., Hajilouy Benisi, A., and Durali, M. "Effect of splitter leading edge location on performance of an automotive turbocharger compressor", Energy, 123, pp. 511-520 (2017).
36. Kim, C., Lee, H., Yang, J., Son, C., and Hwang, Y. "Study on the performance of a centrifugal compressor considering running tip clearance", International Journal of Refrigeration, 65, pp. 92-102 (2016).
37. Galindo, J., Tiseira, A., Navarro, R., and Lopez, M.A. "Influence of tip clearance on flow behavior and noise generation of centrifugal compressors in near-surge conditions", International Journal of Heat and Fluid Flow, 52, pp. 129-139 (2015).
38. Zhang, C., Jun, H., and Zhiqiang, W. "Threedimensional compressor blading design improvements in low-speed model testing", Aerospace Science and Technology, 63, pp. 179-190 (2016).
39. Asgarshamsi A., Hajilouy Benisi A., Assempour A., and Pourfarzaneh, H. "Multi-objective optimization of lean and sweep angles for stator and rotor blades of an axial turbine", Proc IMechE Part G: J. Aerospace Engineering, 229(5), pp. 906-916 (2015).
Volume 28, Issue 1
Transactions on Mechanical Engineering (B)
January and February 2021
Pages 291-304
  • Receive Date: 01 March 2019
  • Revise Date: 28 August 2019
  • Accept Date: 03 March 2020