颗粒物流速影响因素实验及模拟探究EXPERIMENTAL AND SIMULATION RESEARCH ON THE INFLUENCING FACTORS OF PARTICLE VELOCITY
周雨晴,秦梦,赵箫杨,郑志远,刘昊,孟德忠
摘要(Abstract)：
采用室内胡椒罐实验与颗粒流模拟软件PFC2D、3D相结合的方法，探讨影响颗粒物流速的相关因素。研究结果表明，在一定范围内颗粒质量流率与容器孔径呈正相关关系，并满足Beverloo公式；颗粒物流速与颗粒直径、颗粒刚度、摩擦系数等参数呈负相关变化。此外，开孔处倾角、外力等因素对颗粒运动也有着重要影响，增加倾角可以改变颗粒物的流动状态，使其从漏斗流向平推流转变，流速增加；施加外力可以破坏颗粒间形成的成拱结构，降低发生堵塞的概率。
关键词(KeyWords)： 颗粒流;颗粒流模拟软件;堵塞;Beverloo公式
基金项目(Foundation): 教育部产学合作协同育人项目(202002002007);; 中国地质大学(北京)教改项目(XXKC202025)支持
作者(Author): 周雨晴,秦梦,赵箫杨,郑志远,刘昊,孟德忠
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