A previous study revealed that a convex pattern surface can reduce sliding wear of a transfer chute. A convex pattern surface is a flat surface outfitted with a pattern of convexes defined by five parameters. A three-level definitive screening design (DSD) method combined with discrete element method (DEM) is used to investigate the influence of the five parameters and two operational conditions on the sliding wear. Two flow regimes are distinguished, namely continuous and discontinuous flow regimes, and both flow regimes can significantly reduce the sliding wear. The particle velocity and angular velocity profiles verify the guiding and rolling effect of the convex pattern on the motion of particles. A regression model fitted based on the DSD indicates that three main factors and one interaction have significant influence on the sliding wear.

之前的一项研究表明，凸起的图案表面可以减少转移槽的滑动磨损。凸面图案表面是配备有由五个参数定义的凸面图案的平面。采用三级确定筛选设计（DSD）方法结合离散元方法（DEM）来研究五个参数和两个操作条件对滑动磨损的影响。区分两种流态，即连续流态和非连续流态，两种流态都可以显着减少滑动磨损。粒子速度和角速度曲线验证了凸纹对粒子运动的引导和滚动作用。基于 DSD 拟合的回归模型表明三个主要因素和一个相互作用对滑动磨损有显着影响。