Liquid-Saturated Granular Material Flows

abstractcts - 9908430 -马丁。Hunt和C.E. Brennen，加州理工学院他们将研究饱和液体颗粒流的三个基本方面，以提高浓缩悬浮液的可预测性。首先，用浸入式摆实验研究了存在间隙黏性流体时的颗粒-壁面和颗粒-颗粒碰撞。将评估冲击雷诺数、固流密度比和颗粒恢复系数的作用。其次，在流化床和重力流中测量颗粒碰撞压力和固体速度波动，并建立适当的相关性。第三，随着加速度和频率的变化，液体中颗粒振动床的响应将通过使用项目前两部分开发的概念进行评估。如果成功，该研究将有助于更好地理解致密液-固颗粒系统的流动，并在颗粒加工工业和环境中得到应用。

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.