Journal of Applied Science and Engineering

Published by Tamkang University Press


Impact Factor



Shuang Teng, Can Kang This email address is being protected from spambots. You need JavaScript enabled to view it., Mingming Zhou

School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China


Received: July 22, 2019
Accepted: October 22, 2019
Download Citation: ||  


To evaluate the operation stability of the centrifugal pump that transports the high-temperature molten salt, the numerical coupling of flow, thermal and structural fields was implemented. Flow characteristics of the pump were investigated using the computational fluid dynamics technique. The stress, deformation and vibration of the pump rotor were solved using the finite element method. Effects of the flow rate of the medium were considered. The results show that the static pressure increases continuously from the impeller inlet to the volute outlet and this trend is remained with the variation in the flow rate. Along the shaft, temperature decreases gradually from the impeller to the bearings. The maximum Von Mises stress in the impeller arises at the connection between the blade and the impeller shroud and decreases as the flow rate increases. The impeller outer edge is responsible for the largest deformation. The deformation of the shaft attenuates from the impeller to the bearings end. The overall deformation of the rotor tends to be mitigated with the increase in the flow rate. The difference is manifested between dominant natural frequencies of the rotor and the blade passing frequency and its harmonics. At low vibration modes, bending of the rotor is predominant. As the mode order increases, torsional vibration patterns of the pump rotor are evidenced.

Keywords: centrifugal pump; molten salt; fluid-thermal-structure coupling; static pressure; stress; deformation


  1. [1] Barth, D. L., J. E. Pacheco, W. J. Kolb, and E. E. Rush (2002) Development of a high-temperature, long-shafted, molten-salt pump for power tower applications, Journal of Solar Energy Engineering 124(2), 1059–1080. doi: 10.1115/1.1464126
  2. [2] Yang, X. P., X. X. Yang, J. Ding, X. U. Yong-Jun, M. L. Yang, and R. H. Jiang (2014) The experimental heat transfer study on the charging process of a high temperature packed bed storage system, Journal of Engineering Thermophysics 35(3), 529–532.
  3. [3] Hasuike, H., Y. Yoshio, S. Akio, and T. Yutaka (2006) Study on design of molten salt solar receivers for beam-down solar concentrator, Solar Energy 80(10), 1255–1262. doi: 10.1016/j.solener.2006.03.002
  4. [4] Wang, Z., G. F. Naterer, K. S. Gabriel, E. Secnik, R. Gravelsins, and V. Daggupati (2011) Thermal design of a solar hydrogen plant with a copper–chlorine cycle and molten salt energy storage, International Journal of Hydrogen Energy 36(17), 11258–11272. doi: 10. 1016/j.ijhydene.2010.12.003
  5. [5] Cheng, W. J., B. Q. Gu, C. L. Shao, and Y. Wang (2017) Hydraulic characteristics of molten salt pump transporting solid-liquid two-phase medium, Nuclear Engineering and Design 324, 220–230. doi: 10.1016/j. nucengdes.2017.08.036
  6. [6] Childs, D. W. (1989) Fluid-structure interaction forces at pump-impeller-shroud surfaces for rotordynamic calculations, Journal of Vibration & Acoustics 111(3), 216–225. doi: 10.1115/1.3269845 
  7. [7] Hu, Y. Y., D. Z. Wang, Y. Fu, and J. L. Yin (2016) Numerical study on rotordynamic coefficients of the seal of molten salt pump, Nuclear Science and Techniques 27(5), 2131–2153.
  8. [8] Peng, G. J., Z. W. Wang, Z. G. Yan, and R. X. Liu (2009) Strength analysis of a large centrifugal dredge pump case, Engineering Failure Analysis 16(1), 321– 328. doi: 10.1016/j.engfailanal.2008.05.015
  9. [9] Tang, W. Z., L. Yang, W. Zhu, Y. C. Zhou, J. W. Guo, and C. Lu (2016) Numerical simulation of temperature distribution and thermal-stress field in a turbine blade with multilayer-structure TBCs by a fluid–solid coupling method, Journal of Materials Science & Technology 32(5), 452–458. doi: 10.1016/j.jmst.2016.03. 009
  10. [10] Subramaniam, L., and S. Sendilvelan (2012) Modal analysis of a centrifugal pump impeller, European Journal of Scientific Research 79(1), 5–14.
  11. [11] Egusquiza, E., C. Valero, X. X. Huang, E. Jou, A. Guardo, and C. Rodriguez (2012) Failure investigation of a large pump-turbine runner, Engineering Failure Analysis 23(23), 27–34. doi: 10.1016/j.engfailanal. 2012.01.012
  12. [12] Kang, C., L. Zhou, W. F. Wang, and M. G. Yang (2011) Influence of axial vane on inner flow and performance of a molten-salt pump, Proceedings of the ASMEJSME-KSME 2011 Joint Fluids Engineering Conference, Hamamatsu, Shizuoka, Japan, Jul. 24–29. doi: 10.1115/AJK2011-06049
  13. [13] Kang, C., G. F. Zhang, L. T. Li, and Y. X. Li (2015) Flow and heat transfer in an air-cooling device for a molten-salt pump, Proceedings of ASME/JSME/KSME 2015 Joint Fluids Engineering Conference, American Society of Mechanical Engineers, Seoul, South Korea, Jul. 26–31. doi: 10.1115/AJKFluids2015-9602
  14. [14] Peiró, G., J. Gasia, L. Miró, C. Prieto, and L. F. Cabeza (2017) Influence of the heat transfer fluid in a CSP plant molten salts charging process, Renewable Energy 113, 148–158. doi: 10.1016/j.renene.2017.05.083
  15. [15] Shao, C. L., and Z. Yang (2017) Numerical study of the dimensionless characteristics and modeling experiment of a molten salt pump that transports viscous fluids, International Journal of Numerical Methods for Heat & Fluid Flow 27(9), 2131–2153. doi: 10.1108/ HFF-07-2016-0267
  16. [16] Kang, C., N. Mao, C. Pan, Y. Zhu, and B. Li (2017) Effects of short blades on performance and inner flow characteristics of a low-specific-speed centrifugal pump, Proceedings of the Institution of Mechanical Engineers Part A Journal of Power & Energy 231(4), 290– 302. doi: 10.1177/0957650917695672
  17. [17] Speziale, C. G., and S. Thangam (1992) Analysis of an RNG based turbulence model for separated flows, International Journal of Engineering Science 30(10), 1379–1388. doi: 10.1016/0020-7225(92)90148-A
  18. [18] Shao, C. L., J. F. Zhou, and W. J. Cheng (2015) Experimental and numerical study of external performance and internal flow of a molten salt pump that transports fluids with different viscosities, International Journal of Heat & Mass Transfer 89, 627–640. doi: 10.1016/ j.ijheatmasstransfer.2015.05.087
  19. [19] Wang, K., H. E. Xiang-Hui, H. L. Liu, and L. I. Yu (2017) Numerical optimization and thermal analysis of high temperature molten-salt pump radiator, Atomic Energy Science & Technology 51(6), 1016–1023.
  20. [20] Egusquiza, E., C. Valero, D. Valentin, A. Presas, and G. Rodriguez Cristian (2015) Condition monitoring of pump-turbines. New challenges, Measurement 67, 151–163. doi: 10.1016/j.measurement.2015.01.004
  21. [21] Shi, W. D., Y. Xu, Q. Zhang, W. Lu, and L. Zhou (2013) Structural strength analysis of multistage submersible pump impeller based on fluid-structure interaction, Transactions of the Chinese Society for Agricultural Machinery 44(5), 70–73. doi: 10.6041/j.issn. 1000-1298.2013.05.014
  22. [22] Minette, R. S., S. F. Silvaneto, L. A. Vaz, and U. A. Monteiro (2016) Experimental modal analysis of electrical submersible pumps, Ocean Engineering 124, 168–179. doi: 10.1016/j.oceaneng.2016.07.054
  23. [23] El-Gazzar, D. M. (2017) Finite element analysis for structural modification and control resonance of a vertical pump, Alexandria Engineering Journal 56(4), 695–707. doi: 10.1016/j.aej.2017.02.018
  24. [24] Adamkowski, A., A. Henke, and M. Lewandowski (2016) Resonance of torsional vibrations of centrifugal pump shafts due to cavitation erosion of pump impellers, Engineering Failure Analysis 70, 56–72. doi: 10.1016/j.engfailanal.2016.07.011