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运用CFD-DEM耦合模拟计算离心泵内非稳态固液两相流动
离心泵固液两相流 颗粒群轨迹 非稳态数值模拟
2014/10/29
对于泵内固液两相流数值模拟,一般方法是将固体颗粒相视为拟流体,采用多相流的CFD 方法进行计算,但这难以体现固体颗粒形状大小、碰撞、凝聚和分离等特性。本文以工程中常用的IS 型离心泵作为研究对象,运用DEM 离散元法结合CFD 方法,采用EDEM-Fluent 耦合,模拟计算离心泵内非稳态固液两相流动,探索泵内固体颗粒群运动规律及其对外特性的影响。计算采用的固体颗粒密度为1500 kg/m3,泵入...
New Method to Measure the Fill Level of the Ball Mill I—Theoretical Analysis and DEM Simulation
ball mill fill level discrete element method (DEM) simulation
2011/8/3
Up to now, the accurate measurement of the fill level in the ball mill hasn’t been resolved because of the interplay of many variable factors, which led the mill to be operated under the uneconomical ...