The Nature and Effects of Particle Contacts in Suspensions

摘要9712604 R.H.戴维斯大学科罗拉多-博尔德 本文将从实验和理论两方面研究颗粒粗糙度对悬浮流中颗粒间相互作用的影响，包括颗粒碰撞的可视化和分析。 该研究包括观察颗粒接触和反弹，通过使用显微视频摄影，接触力和扭矩的模型，随后可以用来预测颗粒运动和流动微观结构的发展，并制定了一个理论框架，以研究与颗粒颗粒接触的流动。 该项目与工业和环境中的颗粒和多相过程有关，并涉及悬浮流中尚未得到适当关注的关键研究问题。 ***

Abstract 9712604 R.H. Davis, U. of Colorado - Boulder The effect of particle roughness on particle-particle interactions in suspension flow will be experimentally and theretically investigated, including the visualization and analysis of particle collisions. The study includes observation of particle contact and rebound by using microvideo photography, development of models of the contact forces and torques that can be subsequently employed to predict particle motions and flow microstructures, and formulation of a theoretical framework to study the flows with particle-particle contacts. The project has relevance to particle and multiphase processes in industry and environment, and deals with a key research issue in suspension flow that has not yet received proper attention. ***