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SETSCI - Volume (2018)
ISAS 2018 - Ist International Symposium on Innovative Approaches in Scientific Studies, Kemer-Antalya, Turkey, Apr 11, 2018

Numerical Simulation of A Cavitating Centrifugal Pump (ISAS 2018_265)
Aydın Hacı Dönmez1*, Zehra Yumurtacı2, Levent Kavurmacıoğlu3
1Mechanical Engineering Department, Yildiz Technical University, İstanbul, Turkey
2Yildiz Technical University , İstanbul, Turkey
3İstanbul Technical University , İstanbul, Turkey
* Corresponding author: adonmez@yildiz.edu.tr
Published Date: 2018-06-23   |   Page (s): 417-721   |    100     5

ABSTRACT Current study is related with numerical simulation of a centrifugal pump impeller with the specific speed of nq=13. By the help of computational fluid dynamics (CFD) at different operating points, pump performance rsults (Head-Discharge graph) are obtained. Simulations were in good agreement with experimental results. Afterwards, two phase CFD study is carried out in order to examine the cavitation performance of the pump. According to the numerical cavitation tests conducted in selected flow rates by decreasing the inlet pressure gradually; required net positive suction (NPSHR) curve of the pump is obtained. During meshing procedure, single blade passage is considered and tetrahedrons are used. On the other hand, while meshing the
vaneless diffuser, hexahedron elements are used. Finer grids are adopted on solid surfaces for a detailed flow observation. Shear Stress Transport (SST) turbulence model is used throughout the study and Rayleigh-Plesset cavitation model is applied in two phase simulations.  
KEYWORDS Centrifugal pump, impeller, cavitation, CFD, turbulence, two phase
REFERENCES [1] M. Hofmann, B. Stoffel, J. Friedrichs, and G. Kosyna. (2001) “Similarities and Geometrical Effects on Rotating Cavitation in Two Scaled Centrifugal Pumps,” [Online]. Available: http://caltechconf.library.caltech.edu/76/1/paper_b8_001.pdf.

[2] Y. Iga, M. Nohml, A. Goto, and T. Ikohaji, “Numerical Analysis of Cavitation Instabilities Arising in the Three-Blade Cascade,” Journal of Fluids Engineering, vol. 126, pp. 419-429, 2004.

[3] S. D. Kyparissis, and D. P. Margaris, 2012, “Experimental Investigation and Passive Flow Control of a Cavitating Centrifugal Pump,” International Journal of Rotating Machinery, vol. 2012, Article ID: 248082, 8 pages, 2012.

[4] S. Yokoyama, “Effect of the Tip Shape at Entrance of the Impeller Vane of the Centrifugal Pump on Cavitation,” Bulletin of the Japan Society of Mechanical Engineers, vol. 3(11), pp. 326-332, 1960.

[5] X. Luo, Y. Zhang, J. Peng, H. Xu, and W. Yu, “Impeller inlet geometry effect on performance improvement for centrifugal pumps,”Journal of Mechanical Science and Technology, vol. 22(10), pp. 1971-1976, 2008.

[6] S. Christopher, and S. Kumaraswamy, “Identification of Critical Net Positive Suction Head from Noise and Vibration in a Radial Flow Pump for Different Leading Edge Profiles of the Vane,” Journal of Fluids Engineering, vol. 135, pp. 121301-1 - 121301-15, 2013.

[7] D. Bonauiti, M. Zangeneh, and R. A. J. Erikson, “Parametric Design of a Waterjet Pump by Means of Inverse Design, CFD Calculations and Experimental Analysis,” Journal of Fluids Engineering, Journal of Fluids Engineering, vol. 132(3), pp. 031104-1 - 031104-15, 2010.

[8] S. Liu, M. Nishi, and K. Yoshida, “Impeller Geometry Suitable for Mini Turbo-Pump,” Journal of Fluids Engineering, vol. 123, pp. 500-506, 2001.

[9] J. Caridad, F. Kenyery, A. Tremante, and O. Aguillon, “Characterization of a centrifugal pump impeller under two-phase flow conditions,” Journal of Petroleum Science and Engineering, vol. 63(1- 4), pp. 18-22 ,2008

[10] F. Zhang, S. Yuan, Q. Fu, J. Pei, M. Böhle, and X. Jiang, “CavitationInduced Unsteady Flow Characteristics in the First Stage of a Centrifugal Charging Pump,” Journal of Fluids Engineering, vol. 138, pp. 011303-1 – 011303-13, 2017.

[11] R. B. Medvitz, R. F. Kunz, D. A. Boger, J. W. Lindau, and A. M. Yucom, “Performance Analysis of Cavitating Flow in Centrifugal Pumps Using Multiphase CFD” Journal of Fluids Engineering, vol. 124, pp. 377-383, 2002.

[12] F. R. Menter, M. Kuntz, and R. Langtry, “Ten years of industrial experience with the SST turbulence model,” Proc. 4th International Symposium on Turbulence, Heat and Mass Transfer, 2003.

[13] C. E. Brennen, Cavitation and Bubble Dynamics, Oxford University Press, New York, US, 1995.

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