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Centrifugal compressor performance assessment under different impeller tip clearance sizes from far to near stall conditions

Published online by Cambridge University Press:  20 June 2014

Reza Taghavi-Zenouz  and
Ehsan Solki
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Abstract

Impeller tip clearance is a key parameter in design process of a centrifugal compressor which has influential effects on its aerodynamic and thermodynamic performances. Interaction of tip leakage flow with the main stream could be the major source for occurrence of stall phenomenon. In the present investigation, two impeller tip clearances of small and large sizes are investigated under different flow coefficients assigned to “design”, “low flow” and “high flow” conditions. Flow field is precisely simulated utilizing solution of the Reynolds-Averaged Navier-Stokes equations. Influence of the impeller stall on the volute flow field is studied. Structure of vortical flows within the impeller passages and volute are demonstrated in details. Numerical results showed that the flow within the volute becomes stall-prone while the flow within the impeller stalls. In contrast to the high flow case, the low flow condition was more prone for the stall occurrence. Performance tests were also conducted on Iran University of Science and Technology (IUST) centrifugal compressor test rig for validation of the numerical results.

Keywords

stallcentrifugal compressorperformance maptip clearance
Type
Research Article
Information
Mechanics & Industry , Volume 15 , Issue 4 , 2014 , pp. 253 - 265
Copyright
© AFM, EDP Sciences 2014

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References

Huang, W., Geng, S., Zhu, J., Zhang, H., Numerical simulation of rotating stall in a centrifugal compressor with vaned diffuser, J. Thermal Sci. 16 (2007) 115–120 CrossRefGoogle Scholar
Schleer, M., Song, S.J., Abhari, R., Clearance effects on the onset of instability in a centrifugal compressor, J. Turbomach. 130 (2008) 031002-1–11 CrossRefGoogle Scholar
A.S. Hassan, Stability of a low-speed centrifugal compressor with casing treatments, In: Skibin V.A. Saren, V.E. Savin N.M., et al. (eds.) Turbomachines: aeroelasticity, aeroacoustics and unsteady aerodynamics, TORUS Press, Moscow, Russia, 2006, pp. 406–420
H.G. Zhang, W.L. Chu, Y.H. Wu, Numerical investigation of the circumferential grooved casing treatment as well as analyzing the mechanism of improve stall margin, Proceedings of Fifth International Conference on Fluid Mechanics, Shanghai, China, 2007, pp. 448–451
Kang, S., Hirsch, C., Numerical simulation and theoretical analysis of the 3d viscous flow in centrifugal impellers, Task Quarterly 5 (2001) 433–458 Google Scholar
H. Chen, S. Guo, X. Zhu, Z. Du, S. Zhao, Numerical simulations of onset of volute stall inside a centrifugal compressor, Proceedings of ASME Turbo Expo 2008: Power for Land, Sea and Air, Berlin, Germany, 2008, No. GT2008-50036
Hah, C., Krain, H., Secondary flows and vortex motion in a high-efficiency backswept impeller at design and off-design conditions, J. Turbomach. 112 (1990) 7–13 CrossRefGoogle Scholar
Chriss, R.M., Hathaway, M.D., Wood, J.R., Experimental and computational results from the nasa lewis low-speed centrifugal impeller at design and part-flow conditions, J. Turbomach. 118 (1996) 55–65 Google Scholar
A. Reunanen, Experimental and numerical analysis of different volutes in a centrifugal compressor. Ph.D. Thesis, Lappeenranta University of Technology, 2001
Ayder, E., Van Den Braembussche, R., Brasz, J.J., Experimental and theoretical analysis of the flow in a centrifugal compressor volute, J. Turbomach. 115 (1993) 582–589 CrossRefGoogle Scholar
Roache, P.J., Quantification of uncertainty in computational fluid dynamics, Ann. Rev. Fluid Mech. 29 (1997) 123–160 CrossRefGoogle Scholar
S.M. Yahya, Turbines compressors and fans, Tata McGraw-Hill Publishing Company Limited, New Delhi, India, 2003
Furukawa, M., Inoue, M., Saiki, K., Yamada, Y., The Role of tip leakage vortex breakdown in compressor rotor aerodynamics, J. Turbomach. 121 (1999) 469–480 CrossRefGoogle Scholar
Colantuoni, S., Colella, A., Aerodesign and performance analysis of a radial transonic impeller for a 9:1 pressure ratio compressor, J. Turbomach. 115 (1993) 573–581 CrossRefGoogle Scholar
N.A. Cumpsty, Compressor aerodynamics, Longman Scientific, London, 1999
Nili-Ahmadabadi, M., Hajilouy-Benisi, A., Durali, M., Ghadak, F., Investigation of a centrifugal compressor and study of the area ratio and tip clearance effects on performance, J. Thermal Sci. 17 (2008) 314–323 CrossRefGoogle Scholar
Xu, C., Muller, M., Development and design of a centrifugal compressor volute, Int. J. Rotating Mach. 3 (2005) 190–196 CrossRefGoogle Scholar
Ayder, E., Van den Braembussche, R., Numerical analysis of the three-dimensional swirling flow in centrifugal compressor volutes, J. Turbomach. 116 (1994) 462–468 CrossRefGoogle Scholar