International Journal of Naval Architecture and Ocean Engineering

The Society of Naval Architects of Korea (대한조선학회)
권호 표지
DOI QR코드

DOI QR Code

Influence of the empirical coefficients of cavitation model on predicting cavitating flow in the centrifugal pump

  • Liu, Hou-lin (Research Center of Fluid Machinery Engineering and Technology, Jiangsu University) ;
  • Wang, Jian (Research Center of Fluid Machinery Engineering and Technology, Jiangsu University) ;
  • Wang, Yong (Research Center of Fluid Machinery Engineering and Technology, Jiangsu University) ;
  • Zhang, Hua (Research Center of Fluid Machinery Engineering and Technology, Jiangsu University) ;
  • Huang, Haoqin (Research Center of Fluid Machinery Engineering and Technology, Jiangsu University)
  • Published : 2014.03.31
Download PDF
⟨ Previous Next ⟩

Abstract

The phenomenon of cavitation is an unsteady flow, which is nearly inevitable in pump. It would degrade the pump performance, produce vibration and noise and even damage the pump. Hence, to improve accuracy of the numerical prediction of the pump cavitation performance is much desirable. In the present work, a homogenous model, the Zwart-Gerber-Belamri cavitation model, is considered to investigate the influence of the empirical coefficients on predicting the pump cavitation performance, concerning a centrifugal pump. Three coefficients are analyzed, namely the nucleation site radius, evaporation and condensation coefficients. Also, the experiments are carried out to validate the numerical simulations. The results indicate that, to get a precise prediction, the approaches of declining the initial bubble radius, the condensation coefficient or increasing the evaporation coefficient are all feasible, especially for declining the condensation coefficient, which is the most effective way.

Keywords

References

  1. Athavale, M.M., Li, H.Y., Jiang, Y.U. and Singhal, A.K., 2002. Application of the full cavitation model to pumps and inducers. International Journal Rotating Machchinery, 8(1), pp.45-56. https://doi.org/10.1155/S1023621X02000052
  2. Brennen, C.E., 1995. Cavitation and bubble dynamics, Oxford engineering & sciences series 44. New York: Oxford University Press.
  3. Chang, S.P. and Wang, Y.S., 2012. Cavitation performance research of mixed-flow pump based on CFD. Journal of Drainage and Irrigation Machinery Engineering, 30(2), pp.171-176.
  4. Coutier-Delgosha, O., Hofmann, M., Stoffel, B., Fortes-Patella, R. and Reboud, J.L., 2003. Experimental and numerical studies in a centrifugal pump with two-dimensional curved blades in cavitating condition. Journal of Fluids Engineering, 125(6), pp.970-978. https://doi.org/10.1115/1.1596238
  5. Coutier-Delgosha, O., Fortes-Patella, R. and Reboud, J.L., 2003. Evaluation of the turbulence model influence on the numerical simulations of unsteady cavitation. Journal of Fluids Engineering, 125(1), pp.38-45. https://doi.org/10.1115/1.1524584
  6. Delannoy, Y. and Kueny, J.L., 1990. Two phase flow approach in unsteady cavitation modeling. Cavitation and Multiphase Flow Forum, FED 98, pp.153-158.
  7. Dijkers, R.J.H., Fumex, B., de Woerd, J.O., Kruyt, N.P. and Hoeijmakers, H.W.M., 2005. Prediction of sheet cavitation in a centrifugal pump impeller with the three-dimensional potential-flow model. ASME Fluids Engineering Division Summer Meeting and Exhibition, Houston, USA, 19-23 June 2005, pp.1233-1238.
  8. Ding, H., Visser, F.C., Jiang, Y. and Furmanczyk, M., 2011. Demonstration and validation of a 3d cfd simulation tool predicting pump performance and cavitation for industrial applications. Journal of Fluids Engineering, 133(1), pp.1-14.
  9. Gopalan, S. and Katz, J., 2000. Flow structure and modeling issues in the closure region of attached cavitation. Physics of Fluids, 12(4), pp.895-911. https://doi.org/10.1063/1.870344
  10. Hagar, A.E.D., Zhang, Y.S and Medhat, E., 2012. A computational study of cavitation model validity using a new quantitative criterion. Chinese Physics Letters, 29(6), pp.064703(1-3). https://doi.org/10.1088/0256-307X/29/6/064703
  11. Hirschi, R., Favre, J.N., Parkinson, E., Guelich, J.F., Dupont, P. and Avellan, F., 1998. Centrifugal pump performance drop due to leading edge cavitation: numerical predictions compared with model tests. ASME Journal of Fluids Engineering, 120(4), pp.705-711. https://doi.org/10.1115/1.2820727
  12. Kunz, R.F., Boger, D.A., Stinebring, D.R., Chyczewski, T.S., Lindau, J.W., Gibeling, H.J., Venkateswaran, S. and Govindan, T.R., 2000. A preconditioned Navier-Stokes method for two-phase flows with application to cavitation prediction. Computers and Fluids, 29(8), pp.849-875. https://doi.org/10.1016/S0045-7930(99)00039-0
  13. Lei, T., Shu-Liang, C., Yu-Ming, W. and Bao-Shan, Z., 2012. Numerical simulation of cavitation in a centrifugal pump at low flow rate. Chinese Physics Letter, 29(1), pp.014702(1-4). https://doi.org/10.1088/0256-307X/29/1/014702
  14. Liu, H.L., Ren, Y., Wang, K., Wu, D.H., Ru, W.M. and Tan, M.G., 2012. Research of inner floe in a double blades pump based on OPENFOAM. Journal of Hydrodynamics, 24(2), pp.226-234. https://doi.org/10.1016/S1001-6058(11)60238-2
  15. Liu, H.L., Wang, Y., Yuan, S.Q., Tan, M.G. and Wang, K., 2010. Effects of blade number on characteristics of centrifugal pumps. Chinese Journal of Mechanical Engineering, 23(6), pp.742-747. https://doi.org/10.3901/CJME.2010.06.742
  16. Liu, H.L., Liu, D.X., Wang, Y., Wu, X.F. and Zhuang, S.G., 2012. Applicative evaluation of three cavitating models on cavitating flow calculation in centrifugal pump. Transactions of the Chinese Society of Agricultural Engineering, 28(16), pp.54-59.
  17. Marina, O., 2008. Numerical investigation on the cavitating flow in a waterjet pump. Master's Thesis. Chalmers University of Technology, Goteborg Sweden.
  18. Merkle, C.L., Feng, J. and Buelow, P.E.O., 1998. Computational modeling of the dynamics of sheet cavitation. Proceedings of Third International Symposium on Cavitation, Grenoble, France, 7-10 April 2008, pp.307-311.
  19. Schiavello, B. and Visser, F.C., 2009. Pump cavitation-Various npshr criteria, npsha margins, and impeller life expectancy. Proceedings of the twenty-fifth international pump users symposium, Houston, USA, 23-26 February, pp.113-144.
  20. Schnerr, G.H. and Sauer, J., 2001. Physical and numerical modeling of unsteady cavitation dynamics. Proceedings of ICMF2001 International Conference on Multiphase Flow, New Orleans, USA, 27 May-1 June, pp.1-8.
  21. Senocak, I. and Shyy, W., 2002. Evaluation of cavitation models for Navier-Stokes computations. Proceedings of the ASME2002 Fluids Engineering Division Summer Meeting Montreal (FEDSM '02), Quebec, Canada, 14-18 July 2002, pp.395-401.
  22. Senocak, I. and Shyy, W., 2004. Interfacial dynamics-based modeling of turbulent cavitating flows, Part-1: Model development and steady-state computations. International Journal for Numerical Method in Fluids, 44(9), pp.975-995. https://doi.org/10.1002/fld.692
  23. Singhal, A. K., Athavale, M. M., Li, H. and Jiang, Y., 2002. Mathematical basis and validation of the full cavitation model. Journal of Fluids Engineering, 124(3), pp.617-624. https://doi.org/10.1115/1.1486223
  24. Wang, Y., Liu, H. L., Yuan, S. Q., Tan, M. G. and Wang, K., 2011. CFD simulation on cavitation characteristics in centrifugal pump. Journal of Drainage and Irrigation Machinery Engineering, 29(2), pp.99-103.
  25. Yang, M. G., Yin, B. X., Kang, C., Sun, X. K. and Che, Z. F., 2012. Numerical simulation of unsteady cavitating flow around hydrofoil. Journal of Drainage and Irrigation Machinery Engineering, 30(2), pp.192-197.
  26. Zhou, L.J. and Wang, Z.W., 2008. Numerical simulation of cavitation around a hydrofoil and evaluation of a RNG k-$\varepsilon$ model. Journal of Fluids Engineering, 130(1), pp.1-7.
  27. Zwart, P., Gerber, A.G. and Belamri, T.A., 2004. A Two-phase flow model for predicting cavitation dynamics. Proceedings of ICMF2004 International Conference on Multiphase Flow, Yokohama, Japan, 30 May-3 June, pp.1-11.