Schure Mark R, Maier Robert S, Kroll Daniel M, Davis H Ted
Theoretical Separation Science Laboratory, Rohm and Haas Company, 727 Norristown Road, Box 0904, Spring House, PA 19477-0904, USA.
J Chromatogr A. 2004 Mar 26;1031(1-2):79-86. doi: 10.1016/j.chroma.2003.12.030.
A computer simulation of chromatographic dispersion in an ordered packed bed of spheres is conducted utilizing a detailed fluid flow profile provided by the Lattice Boltzmann technique. The ordered configurations of simple cubic, body-centered cubic, and face-centered cubic are employed in these simulations. It is found that zone broadening is less for the fcc structure than the sc and bcc structures and less than a random packed bed analyzed in a previous study in the low flow velocity region used for experimental chromatography. The factors which contribute to the performance of the ordered pack beds are analyzed in detail and found to be dependent both on the nearest surface to surface distance and on the distribution of velocities found in the various packing geometries. The pressure drops of the four configurations are compared and contrasted with the pressure drop from monolithic columns.
利用格子玻尔兹曼技术提供的详细流体流动剖面，对球体有序填充床中的色谱分散进行了计算机模拟。这些模拟采用了简单立方、体心立方和面心立方的有序构型。研究发现，在用于实验色谱的低流速区域，面心立方结构的区域展宽比简单立方和体心立方结构小，且小于先前研究中分析的随机填充床。详细分析了影响有序填充床性能的因素，发现这些因素既取决于最近的表面到表面距离，也取决于各种填充几何结构中的速度分布。比较并对比了这四种构型的压降与整体柱的压降。
