【摘 要】
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Since various foreign bodies can cause clogging and wear in the single-channel pump,considerable attentions have been focused on the numerical study of liquid-solid flows in the singlechannel pump.How
【机 构】
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Graduate School of Mechanical Engineering,Sungkyunkwan University,Republic of Korea
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Since various foreign bodies can cause clogging and wear in the single-channel pump,considerable attentions have been focused on the numerical study of liquid-solid flows in the singlechannel pump.However,conventional numerical simulation prefers to treat the solid particles as a kind of pseudo-liquid medium,which cannot responsibly assess the significant effect of the particle material properties,shapes and size on the pump.In consideration of the particle features and behaviors,the coupled Computational Fluid Dynamics(CFD)-Discrete Element Method(DEM)was applied to simulate the liquid-solid flows in the single-channel pump.The smaller particles possessed greater velocity distribution range and velocity peak,while the larger particles exerted greater contact force.The pie-shaped particles got the most serious collision and spherical particles got the least in total.The hub and shroud wall suffered the minor contact force,but the blade and volute wall both sustained considerable contact force.
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