Segregation of granular particles affects the quality of end products in the pharmaceutical, chemical and food processing industries. Many researchers have worked on controlling the mechanical properties of granular particles to minimize segregation. In this paper, we studied different chute-related factors — inclination angle, friction, fill, channel geometry and base profile — and their effects on segregation. We conducted a small-scale experiment with chute inclined at different angles, and also numerical simulations performed using an open-source discrete element method (DEM) code — LIGGGHTS. We found the optimal condition for minimum segregation of a binary granular mixture. We concluded that segregation is minimized if the stream-wise velocity is low, for example, by keeping the chute at a low inclination [Formula: see text] and increasing the wall roughness to 0.14.

中文翻译：

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研究减少颗粒分离的外部因素

粒状颗粒的分离会影响制药、化学和食品加工行业中最终产品的质量。许多研究人员致力于控制粒状颗粒的机械性能以尽量减少偏析。在本文中，我们研究了不同的溜槽相关因素——倾角、摩擦、填充、通道几何形状和底部轮廓——以及它们对分离的影响。我们对斜槽以不同的角度进行了小规模实验，并使用开源离散元法 (DEM) 代码 LIGGGHTS 进行了数值模拟。我们找到了二元颗粒混合物最小分离的最佳条件。我们得出的结论是，如果流向速度较低，例如通过将溜槽保持在较低的倾斜度，则可以最小化分离[公式：