REU Supplement: Studies of Two-Phase Flows of Solids and Liquids

该项目采用简单的实验和数值模拟相结合的方法来计算分散两相流中颗粒所受的水动力。实验内容包括以下五个方面：(1)评价油水混合物的惯性效应；(2)流体和固体混合物的有效密度；(3)流态化颗粒尾迹相互作用频率的测定；(4)二维颗粒床层的图像分析；(5)流动颗粒的润滑输运。对于满足N-S方程的流动，将进行相应的二维和三维有限元模拟。作用在粒子上的力和力偶将被确定。该研究项目的目标是为流动混合物的“分子动力学”模拟获得数据。该项目将开发对颗粒两相系统中的相互作用力和流动特性进行建模所需的基本信息，并将其应用于工业和自然现象中的各种过程。

The project deals with a combination of simple experiments and numerical simulations to compute hydrodynamic forces on particles in dispersed two-phase flow. The experiments are on the following five topics: (1) Evaluation of the inertial effects in oil-water mixtures, (2) The effective density of mixtures of fluids and solids, (3) Determination of the frequency of wake interactions of fluidized spheres, (4) Image analysis of two-dimensional beds of particles, and (5) Lubricated transport of flowing particulates. Corresponding two-and three-dimensional finite element simulations will be performed for flows satisfying the Navier-Stokes equations. Forces and couples acting on particles will be determined. The objective of the research program is to obtain data for a "molecular dynamic" simulation of flowing mixtures. This project will develop fundamental information necessary for modeling of interaction forces and flow characteristics in particulate two-phase systems, with application to a variety of processes in industry and natural phenomena.