Abstract

This paper presents a numerical comparison of the mixing performance between two configurations of batch oscillatory baffled column: the stationary-baffle column and the moving-baffle column. Computational fluid dynamic (CFD) software was used to investigate the effect of various oscillation conditions on fluid flow and mixing for both configurations. Population balance modeling was used to validate each column using droplet size distribution data for multiphase flow simulations. Column performance was evaluated in terms of power requirement, axial and radial flow dominance, and mixing time. The results suggest that better convective mixing occurs in stationary-baffle columns due to the increased axial velocity magnitudes produced for this configuration of column with respect to moving-baffle columns operating at the same oscillation frequency and amplitude.

摘要

本文介绍了两种间歇式振荡挡板柱配置之间混合性能的数值比较：固定挡板柱和移动挡板柱。计算流体动力学 (CFD) 软件用于研究各种振荡条件对两种配置的流体流动和混合的影响。种群平衡建模用于使用液滴尺寸分布数据验证每根柱子，用于多相流模拟。根据功率要求、轴向和径向流动优势以及混合时间来评估柱性能。