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

该项目的总体目标是通过理论和数值分析，更好地了解中等雷诺数下填料床的性能。流体通过周期性和随机球体和圆柱体阵列的流动方程将使用格-玻尔兹曼细胞自动化方法求解。这将是劳伦斯利弗莫尔国家实验室的Donald L. Koch教授和Anthony J.C. Ladd博士的合作成果。所提出的方法是一种严格的方法，可以很容易地期望产生新的见解和大量可靠的数据，用于未来的基准和定性比较。所提出的努力在理论上既有趣又具有相当大的实际意义。填料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压降、流动中颗粒的传热传质以及流体相内的热扩散和质量扩散的影响。虽然对这些现象有大量的实验数据，但对非零雷诺数充填床中流体流动和输运过程的理论分析却很缺乏。研究生将获得为期三年的资助，并有望在此期间完成博士论文。日期：1996年2月1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