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

提案编号：CTS-9526149 Koch 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的填充床性能。 通过球体和圆柱体的周期性和随机阵列的流体流动方程将使用格子玻尔兹曼元胞自动化方法来求解。 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 博士之间的合作成果。 所提出的方法是一种严格的方法，可以很容易地预期它会产生新的见解和大量可靠的数据，用于未来的基准测试和定性比较。 所提出的努力不仅在理论上很有趣，而且具有相当大的实际意义。 填充床是化学工业中最常见的反应器类型。 这些反应器的设计受到压降、流动中颗粒的传热和传质以及流体相内的传热和传质的影响。 虽然有大量的实验数据可用于这些现象，但缺乏对非零雷诺数填充床中的流体流动和传输过程的理论分析。 研究生将获得三年的支持，并期望获得博士学位。论文将在这种支持下产生。 罗杰·E.A. 阿恩特日期：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