Liquid-Saturated Granular Material Flows

摘要CTS-9908430M.L.亨特和C.E.布伦南，加州理工学院液体饱和颗粒流的三个基本方面，与提高浓悬浮液的可预测性的总体目的，将进行调查。 首先，在间隙粘性流体存在下的颗粒壁和颗粒颗粒碰撞将使用浸没摆实验研究。 的影响雷诺数，固体-流体密度比，和颗粒恢复系数的作用将进行评估。 其次，将测量流化床和重力流中碰撞引起的颗粒压力和固体速度波动，并建立适当的关联式。 第三，当加速度和频率变化时，液体中颗粒振动床的响应将通过使用该项目前两部分中开发的概念进行评估。 如果成功，该研究将导致更好地理解稠密液固颗粒系统流动，并应用于颗粒加工工业和环境。

AbstractCTS-9908430M.L. Hunt and C.E. Brennen, California Institute of TechnologyThree fundamental aspects of liquid-saturated particle flows, with the overall purpose of improving predictability of concentrated suspensions, will be investigated. First, the particle-wall and particle-particle collisions in the presence of an interstitial viscous fluid will be experimentally studied using an immersed pendulum. The role of the impact Reynolds number, solid-fluid density ratio, and particle restitution coefficients will be evaluated. Second, particle pressure by collisions and solid velocity fluctuations in fluidized bed and gravitational flow will be measured and suitable correlations will be established. Third, the response of vibrated beds of particles in liquids as the acceleration and frequency is varied will be evaluated by using the concepts developed in the first two parts of the project. If successful, the research will lead to better understanding of dense liquid-solid particle system flows with application in particle processing industries and environment.