In this paper, the discrete phase model (DPM) and semiempirical wear model were used to simulate the unsteady solidliquid twophase flows and wear in a centrifugal pump, to explore the solid particle movement and the wear of the pump. The liquid phase was solved by the fluid governing equations in the Euler coordinate system; the solid particle phase was treated as a discrete medium and solved by the equations of particle motion in Lagrange coordinate. The solidliquid phase coupling was performed using iterative numerical method. An IS type centrifugal pump was selected in the simulation. Water and sand particle were chosen as the continuous phase and the discrete phase, respectively. The particle volumetric ratio at the pump inlet was in the range of 0.5%-3% with the particle size of 0.05-0.2 mm. The flow characteristics of the solidliquid twophase flows, the trajectory of the particle cluster and the distribution of wear rate in the centrifugal pump were obtained by the simulation.
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黄思,邹文朗,周锦驹,何东萍,彭天阳.基于DPM模型的离心泵非定常固液两相流及磨损计算[J].机床与液压,2016,44(6):1-5. . Unsteady numerical simulation on solidliquid flows and wear in a centrifugal pump based on DPM model[J]. Machine Tool & Hydraulics,2016,44(6):1-5