Fluid Flow, Pressure Drop, and Heat and Mass Transfer in Packed Beds at Moderate Reynolds Numbers

提案编号：CTS-9526149 Koch 本计画的主要目的是借由理论与数值分析，以更好地了解中等雷诺数下的填充床性能。 通过周期性和随机排列的球体和圆柱体的流体流动方程将使用格子玻尔兹曼细胞自动机方法求解。 这将是一个合作的努力，教授唐纳德L。Koch和Anthony J.C.博士劳伦斯利弗莫尔国家实验室的拉德。 拟议的方法是一个严格的，可以很容易地预期产生新的见解和大量的可靠数据，为未来的基准和定性比较。 所提议的努力在理论上是令人感兴趣的，而且具有相当大的实际意义。 填充床是化学工业中最常用的反应器类型。 这些反应器的设计受到压降、来自流中颗粒的热量和质量传递以及流体相内的热量和质量扩散的影响。 虽然大量的实验数据可用于这些现象，但在非零雷诺数下填充床中的流体流动和传输过程缺乏理论分析。 研究生将获得三年的支持，并期望获得博士学位。论文将产生这种支持。 Roger E.A. Arndt 日期：一九九六年二月一日

Proposal Number: CTS-9526149 Koch The overall aim of this project is to obtain a better understanding of packed bed performance at moderate Reynolds number through theoretical and numerical analysis. The equations of fluid flow through periodic and random arrays of spheres and cylinders will be solved using the lattice-Boltzman cellular automation approach. This will be a collaborative effort between Professor Donald L. Koch and Dr. Anthony J.C. Ladd of the Lawrence Livermore National Laboratories. The proposed approach is a rigorous one, which can readily be expected to produce new insight and a considerable body of reliable data for future benchmarking and qualitative comparisons. The proposed efforts are both theoretically interesting and of considerable practical relevance. Packed beds are the most common type of reactor used in the chemical industry. The design of these reactors is influenced by pressure drop, heat and mass transfer from particles in the flow and the heat and mass diffusion within the fluid phase. While an extensive body of experimental data is available for these phenomena, there is a dearth of theoretical analysis on the fluid flow and transport processes in packed beds at non-zero Reynolds numbers. A graduate student will be supported for three years with the expectation that a Ph.D. thesis will result from this support. Roger E.A. Arndt Date: February 1, 1996