With mixture model,the solid-liquid two-phase flow in a double channel pump,with specific speed 80 was simulated.The effects of particle diameter,particle concentration and performance conditions on static pressure distribution,absolute velocity distribution,solid volume concentration distribution and energy characteristics were studied.The results indicate that the change of particle diameter has important effects on solid volume concentration distribution and little impact on static pressure distribution,absolute velocity distribution,and energy characteristics.The change of particle concentration has more effects on static pressure distribution,solid volume concentration distribution and energy characteristics,but has little impact on absolute velocity distribution.The change of performance conditions has obvious effects on static pressure distribution,absolute velocity distribution,and little impact on solid volume concentration distribution.The results also show that the trend of performace curves is the same as that of water centrifugal pump and the characteristics are the best when particle diameter is 0.075 mm and the solid volume concentration is 30%.
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