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《Journal of Shanghai Jiaotong University》 2001-01
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Galerkin FEM-Based Numerical Simulation of Flow Field in Jet Pump

GUO Xin gui 1, NI Fu sheng 2, HU Pei cheng 2, LI Cong xin 1 (1.Dept. of Plasticity Tech., Shanghai Jiaotong Univ., Shanghai 200030, China; 2.College of Mechanical & Electrical Eng., Hohai Univ., Changzhou 213022)  
Based on the incompressible primitive variable Navier Stokes equations, a numerical method was employed to simulate successfully the axis symmetric flow field of jet pump. The iterative and time matching algorithms of Galerkin finite element method and Baldwin Lomax two layer algebraic turbulent model were used. The computing efficiency is improved by introducing the wave matrix method to solutions. The press surging is avoided by utilizing the hybrid interpolation functions. The solutions are prevented from spurious oscillations by the Simple Upwind Petrov Galerkin(SUPG) method. Finally, this paper took the jet pump used in Daxia hydropower station as an example for computing and analyzing the internal flows. The velocity and pressure computed agree with the experimental results. The results are applicable to the theoretical studies of jet pump flow and the optimal design of jet pump constructive parameters.
【CateGory Index】: TH38
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