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为提高离心泵的抗磨蚀能力 ,对泵内固液两相流的流态进行深入研究。在多相紊流运动双流体模型的基础之上 ,建立了两相紊流运动的大涡模拟。利用大涡模拟 ,对离心泵叶轮内部的固液两相流动进行数值计算。计算结果得出液相压力分布和相对速度场 ,及固相的颗粒数分布和相对速度场。其中压力和颗粒的分布与同一离心泵在日本所做合作研究量测的实验结果进行比较 ,两者相互吻合
In order to improve the anti-erosion ability of the centrifugal pump, the fluid state of the solid-liquid two-phase flow in the pump is studied in depth. Based on the multi-phase turbulence two-fluid model, a large eddy simulation of two-phase turbulent flow is established. The large-eddy simulation is used to calculate the solid-liquid two-phase flow in the centrifugal pump impeller. The calculated results obtained the liquid pressure distribution, the relative velocity field, the particle number distribution and the relative velocity field of the solid phase. The pressure and particle distribution are compared with the experimental results measured by the same centrifugal pump in Japan