Study on 3-D Flow Field of Concrete Volute Conduit of Circulating Water Pump in Nuclear Power Plant

Abstract:

As the largest unit capacity of nuclear power plant at present, the flow conduit of circulating water pump in EPR1750 nuclear power plant is a volute conduit, which is a cast-in-situ conceret structure with complexly gradual change cavity. Therefore, the hydraulic efficiency of circulating water pump is not only related with the design of pump leaves, but also closely related to the design of volute and the complicated spatial type of intake and outtake conduits. With the pump leaves and the intake and outtake conduits of conceret volute as the research model, based on computational fluid dynamics (CFD)and the three dimensional Reynolds averaged Navier-Stokes equations, an analytic model suitable for computation is established to simulate the three-dimensional steady flow in the whole pumping system under different operating modes. By use of the commercial fluid-computation softer ANSYS, the distribution of basic physic quantities in the fluid field inside the pump and the conduits is obtained. The analysis and prediction of the performance of pump system are made, and the spatial type design of intake and outtake conduits is evaluated. The calculation results can be referenced to improve the design of pump systems in the similar projects.

• Periodical: Applied Mechanics and Materials (Volumes 99-100)
• Pages: 350-353
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.99-100.350
• Online since: September 2011
• Authors: Xiao Bing Sun, Xu Bin Qiao
• Keywords: 3D Flow Field, Circulating Water Pump, Steady Flow, Volute Flow Conduit

References

[1] Haiku Zhang, Xiaobing Liu et al. Numerical simulation of internal Flow based on the entire Francis turbinerunner [J]. Hydroelectric Power, 2009, 35(3):51~53. (In Chinese)

[2] Zhanwei Bo, Jianghong Pei et al. Numerical simulation of internal flow of centrifugal pump [J]. Mechanical Design and Manufacturing, 2009, (6): 223~225. (In Chinese)

[3] Houlin Liu et al. Numerical simulation of turbulent of double channel impeller pump [J]. Agricultural Engineering, 2002,18(2):9~12. (In Chinese)

[4] Qifei Li et al. CFD simulation for two-phase flow of sediment water in volute [J]. Drainage and Irrigation Machinery, 2007,25(5):61~64. (In Chinese)

[5] Shuangquan Zhang et al. CFD analysis of large spiral case [J]. Power, 2004,22(1):75~77. (In Chinese)

[6] Launder BE, Spalding DB. The numerical computation of turbulent flows [J]. Computer Methods in Applied Mechanics and Engineering, 1974, (3):269 - 289.

DOI: 10.1016/0045-7825(74)90029-2

[7] Cebeci T, Bradshaw P. Momentum transfer in boundary layers [M]. New York: Hemisphere Publishing Corporation, 1977.