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首页> 外文期刊>AIChE Journal >A Soft-Sphere-Imbedded Pseudo-Hard-Particle Model for Simulation of Discharge Flow of Brick Particles
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A Soft-Sphere-Imbedded Pseudo-Hard-Particle Model for Simulation of Discharge Flow of Brick Particles

机译：用于模拟砖颗粒排放流的软球嵌入伪硬粒子模型

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A novel hybrid approach of soft-sphere-imbedded pseudo-hard-particle model is proposed to cope with the complex collision of nonspherical particles. In this approach, the boundary of a host hard particle is covered by a series of soft-spheres, which are allowed to oscillate about the equilibrium position according to the position, orientation, and shape configuration of the host particle. The collision processes are twofold: as a predictive process, particle-particle interaction takes place through the collision between the distributed soft-spheres, which causes subspheres to deviate from the equilibrium positions; as a corrective process, relaxation is superposed to allow the soft-spheres to move back toward the equilibrium positions quickly. Consequentially, this process generates the force and torque on the host particle and determines its movement. Finally, after validation, this new model is used to explore the effects of aspect ratio and base angle on the discharge of brick particles in hoppers. (C) 2016 American Institute of Chemical Engineers AIChE J, 62: 3562-3574, 2016
机译：提出了一种新型的混合软球嵌入伪硬粒子模型的方法，以应对非球形粒子的复杂碰撞。在这种方法中，主体硬颗粒的边界被一系列软球覆盖，这些软球可以根据主体颗粒的位置，方向和形状配置在平衡位置附近振荡。碰撞过程是双重的：作为一种预测过程，粒子-粒子之间的相互作用是通过分布的软球之间的碰撞发生的，从而导致子球偏离平衡位置。作为纠正过程，松弛叠加在一起以使软球快速移回平衡位置。因此，此过程会在主体颗粒上产生力和扭矩并确定其运动。最后，在验证之后，该新模型用于探索纵横比和底角对料斗中砖颗粒排放的影响。 （C）2016美国化学工程师学会AIChE J，62：3562-3574，2016

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