Abstract There is a paucity of studies on the relationship between the control parameters and kinetic parameters in binary-size granular segregation models. In this study, the machine vision method and particle image velocimetry (PIV) were used to measure the shape index of segregation pattern and streamwise velocity, respectively. Two scaled parameters, control parameters and kinetic parameters, were calculated based on the continuous flow model and segregation model. The control parameters include volume flow rate, and the kinetic parameters include the ratio of segregation effects to diffusion effects. By analyzing the relationship between the two parameters under the core and streak patterns, the configuration of segregation pattern at steady-state changes with the control parameters wherein the ratio of segregation effects to diffusion effects decreases approximately linearly as the volume flow rate decreases. These experimental results aid in revealing the mechanism of segregation and providing the reference data for improving the theoretical models.

中文翻译：

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在转鼓中从核心图案到条纹图案的二元尺寸颗粒分离

摘要 二元粒度偏析模型中控制参数与动力学参数之间的关系研究较少。在这项研究中，机器视觉方法和粒子图像测速法（PIV）分别用于测量分离模式和流向速度的形状指数。基于连续流动模型和分离模型计算了两个比例参数，控制参数和动力学参数。控制参数包括体积流量，动力学参数包括分离效应与扩散效应的比值。通过分析核心和连续模式下两个参数之间的关系，稳态下的偏析模式的配置随控制参数而变化，其中偏析效应与扩散效应的比率随着体积流量的减小而近似线性地减小。这些实验结果有助于揭示偏析的机理，为改进理论模型提供参考数据。