规整填料塔内液相返混的CFD模拟

摘要通过对规整填料塔内部结构的分析,认为其内部存在三种基本结构单元:同一盘填料内的交叉单元、上下两盘填料旋转90度的衔接单元和填料与塔壁的衔接单元。使用RNGk-ε湍流模型对不同的结构单元进行三维CFD模拟计算,发现不同的结构单元具有不同的流动特性。同时,使用示踪激励响应技术,研究了不同结构单元的轴向返混情况。

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	陈保卫
	曾爱武

关键词：规整填料塔轴向返混计算流体力学

Abstract： By analyzing the flow channel in the structured packing, three basic structure cells in the structured packing:single cross-over in the same set of packing, the cross-over of the 90° turn on the boundary of the two sets of the packing and the packing structure next to the wall were proposed. RNG k-ε turbulent model was selected to perform CFD simulation of the 3-D flow of the liquid in different structure cell and the simulation showed that different structure cell had different flow characteristics. Furthermore, incentive and response technology of the tracer was used to study the axial backmixing of the liquid in different structure cell.

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Received 2004-09-15; published 2004-09-15

引用本文:

陈保卫,曾爱武.规整填料塔内液相返混的CFD模拟[J]. 化学工业与工程, 2004,21(5): 313-316

CHEN Bao-wei,ZENG Ai-wu g Research Center of Tianjin University,Tianjin 300072,China).CFD Simulation of Backmixing of the Liquid in Structured Packing Column[J]. Chemcial Industry and Engineering, 2004,21(5): 313-316

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