Particle separation mechanisms and kinetics in granular materials in a gravity chute and under vibrational impact are analyzed. Special attention is given to separation and kinetics mechanisms operating under conditions of high heterogeneity of structural and kinematic characteristics of granular flows. An analysis of alternative expressions for the separation driving force arising from local and spatial heterogeneity of granular media is based on results of experimental and analytical studies. Predictive properties of mathematical models are discussed with reference to the dynamics of separation of granular media according to the size and density of their constituent particles due to shear flow heterogeneity.

中文翻译：

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粒状物料重力分离的机理和动力学

分析了重力溜槽中和振动冲击下粒状材料的颗粒分离机理和动力学。特别注意在颗粒流的结构和运动学特征高度不均一的条件下运行的分离和动力学机制。基于实验和分析研究的结果，对由颗粒介质的局部和空间异质性引起的分离驱动力的替代表达式进行了分析。根据颗粒介质由于剪切流非均质性而形成的颗粒的大小和密度，参考颗粒介质的分离动力学讨论了数学模型的预测性质。