U.S.-France Cooperative Research: Hydrodynamics of Fluid Particle Systems

该奖项将支持博士之间的合作研究。 斯坦福大学化学工程系乔治霍姆西 大学和Elisabeth Guazelli博士，巴黎高等教育学院 Physique et Chimie Industrielles，巴黎，法国。 客观 该项目的一部分是研究流体动力学 粒子系统 研究人员将研究流体动力学效应， 悬浮液和流化床。 这种行为 分散的多相系统在许多领域中是重要的。 科学和技术领域。 其中包括应用 在处理和加工材料，如：1）复合材料 和乳液，2）流体的化学处理，如 流化床反应器，3）环境流体力学， 例如沉积物和营养物在自然水流中迁移， 4)分离技术，如浮选、沉淀 和澄清。 尽管对这些领域进行了深入的研究， 在过去的几十年里，有许多基本的 这些系统的机械行为的方面， 仍然知之甚少，特别是， 在组成分散相的颗粒之间。在这 项目，研究人员建议开展：1） 水动力学的理论和数值研究 悬浮液中颗粒之间的相互作用，以及2） 悬浮物沉降行为的实验研究 离子交换、流化床和所谓的“铁流体”，即 磁性布朗粒子的悬浮液。 主 法国小组的重点将是实验研究， 而美国将是理论上和数字上的 建模该项目将受益于提供 法国的流动可视化专用核磁共振设备 实验室

This award will support collaborative research between Dr. George Homsy, Department of Chemical Engineering, Stanford University and Dr. Elisabeth Guazelli, Ecole Superieure de Physique et Chimie Industrielles, Paris, France. The objective of the project is to investigate the hydrodynamics of fluid particle systems. The investigators will study hydrodynamic effects in suspensions and fluidized beds. The behavior of such dispersed multiphase systems is important in a number of fields of science and technology. These include applications in handling and processing materials such as: 1) composites and emulsions, 2) chemical processing of fluids, as in fluidized bed reactors, 3) environmental fluid mechanics, such as sediment and nutrient transport in natural flows and 4) separation technologies, such as flotation, sedimentation and clarification. Despite intensive study of these fields over the last several decades, there are many fundamental aspects of the mechanical behavior of such systems that remain poorly understood, in particular, the interactions between the particles making up the dispersed phase. In this project, the investigators propose to carry out: 1) theoretical and numerical studies of hydrodynamic interactions between particles in suspension, and 2) experimental studies of the behavior of sedimenting suspen- sions, fluidized beds, and so-called "ferro fluids", i.e. suspensions of magnetic Brownian particles. The primary focus of the French group will be the experimental studies, while that of the US will be theoretical and numerical modeling. The project will benefit from the availability of special NMR facilities for flow visualization in the French laboratory.