A non-analytical method and electronic apparatus for simulating particle two-phase flow in ducts

• Main Authors: TENG YUJUN, LIU MOUBIN, WANG ZEKUN
• Format: Patent
• Language: Chinese; English
• Published: 26.03.2019
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The present disclosure provides a non-analytical method and electronic apparatus for simulating a two-phase flow of particles in a conduit. Wherein the method comprises: traversing a mesh around a particle; The average porosity and velocity in the flow field near the particles are calculated. Calculating the drag force exerted on the particles; Coupling the particle and the flow field, the motionof the particle and the flow field are obtained. A high-precision non-analytical algorithm for simulating particle two-phase flow in ducts is disclosed, which can well describe particle motion in a flow field under the condition that particle size is close to mesh size, and reduces CFD. The grid size requirement of DEM coupled algorithm can be used to solve the two-phase flow problem in liquid-solid and gas-solid fluidized beds. 本公开提供了种用于模拟管道颗粒两相流动的非解析方法及电子设备。其中所述方法包括：遍历颗粒周边的网格；计算颗粒附近流场的平均孔隙率与速度；计算颗粒所受的拖曳力大小；进行颗粒与流场的耦合，得到颗粒的运动情况和流场的流动情况。本公开对种用于模拟管道颗粒两相流动的高精度非解析算法能在颗粒大小与网格尺寸相近的情况下很好地描述流场中的颗粒运动，降低了CFD-DEM耦合算法对网格尺寸的要求，可用