规整填料塔内气-液两相并流流动的CFD研究

摘要

应用FLUENT，即一款流体力学计算软件，对规整填料塔内的气液两相并流流动时的液相分布进行了研究，用数学方法拟合出压降和持液量之间的定量关系，并通过实验进行了验证。基于Mellapak350Y填料建立了物理模型，采用的方程是RNG k-ε湍流模型封闭动量方程。模拟过程中引入了表面张力源项以及相间作用力源项。模拟结果和实验结果吻合良好，表明了求解规整填料塔内两相并流流动的方法是合理的。

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	何杰
	高腾飞
	罗文媛
	韩少强
	王昕

关键词：计算流体力学(CFD)；压降；持液量

Abstract：

In this paper, the phase distribution of gas liquid co-current flow was predicted using computational fluid dynamics (CFD) code FLUENT in structured packing column. The pressure drop and holdup were fitted, and also were verified by experiments. In this paper, the physical model was founded based on packing Mellapak350Y. The RNG k-ε turbulent model was adopted to close the momentum equation. In the calculation, the source term of surface tension and inter phase action were inducted. The simulated results are in good agreement with the experimental data. The comparison show that the method proposed in this paper is successful to solve the gas liquid co-current flow in structured packing column.

Keywords： computational fluid dynamics(CFD)； pressure drop； liquid holdup

Received 2015-02-10;

Corresponding Authors: 何杰,E-mail:heijie_tju@163.com。 Email: heijie_tju@163.com

About author: 何杰(1962-),男,副教授,现主要从事传质分离研究。

引用本文:

何杰, 高腾飞, 罗文媛, 韩少强, 王昕.规整填料塔内气-液两相并流流动的CFD研究[J]. 化学工业与工程, 2017,34(1): 76-83

He Jie, Gao Tengfei, Luo Wenyuan, Han Shaoqiang, Wang Xin.Study on Gas-Liquid Co-Current Flow in Structured Packing Column by Computational Fluid Dynamics[J]. Chemcial Industry and Engineering, 2017,34(1): 76-83

[1] 张鹏, 刘春江, 成弘, 等. 规整填料塔内流体流动研究进展及展望[J]. 化学工程, 2001, 29(3):66-70, 73 Zhang Peng, Liu Chunjiang, Cheng Hong, et al. Progress in the studies on fluid flow in structured packing tower and its prospect[J]. Chemical Industry and Engineering, 2001, 29(3):66-70, 73(in Chinese)
[2] Gu F, Liu C, Yuan X, et al. CFD simulation of liquid film flow on inclined plates[J]. Chem Eng Technol, 2004, 27(10):1099-1104
[3] 陈江波. 高压下规整填料塔的计算传递及传质性能[D].天津:天津大学, 2006 Chen Jiangbo. Numerical and experimental study of transport phenomena in a structured packed column at high pressure[D]. Tianjin:Tianjin University, 2006(in Chinese)
[4] 陈江波, 刘春江. 计算流体力学方法模拟规整填料塔内流体流动行为的研究进展[J]. 石油化工, 2007, 36(9):962-965 Chen Jiangbo, Liu Chunjiang. Progress of simulation of fluid flow behavior in structured packed column by computational fluid dynamics[J]. Petrochemical Technology, 2007, 36(9):962-965(in Chinese)
[5] Petre C F, Larachi F, Iliuta I, et al. Pressure drop through structured packings:Breakdown into the contributing mechanisms by CFD modeling[J]. Chemical Engineering Science, 2003, 58:163-177
[6] Raynal L, Boyer C, Ballaguet J P. Liquid holdup and pressure drop determination in structured packing with CFD simulations[J]. Canadian Journal of Chemical Engineering, 2008, 82(5):871-879
[7] Brackbill J U, Kothe D B, Zemach C. A continuum method for modeling surface tension[J]. J Comput Phys, 1992, 100:335-354
[8] Bird B, Stewart W E, Lightfoot E N. Transport phenomena[M]. New York:John Wiley & Sons, Inc., 2002
[9] Riazi M R, Faghri A. Effect of interfacial drag on gas absorption with chemical reaction in a vertical tube[J]. AIChE J, 1986, 32(4):696-699
[10] 王树楹. 现代填料塔技术指南[M]. 北京:中国石化出版社, 1998
[11] 董谊仁, 裘俊红, 侯章德. 现代填料塔技术(四)填料塔的流体力学和传质(上)[J]. 化工生产与技术, 1997, (1):18-28
[12] 谷芳, 刘春江, 袁希钢, 等. 板波纹规整填料液相分布模型[J]. 天津大学学报:自然科学与工程技术版, 2005, 38(7):586-591 Gu Fang, Liu Chunjiang, Yuan Xigang, et al. Liquid distribution model for sheet corrugated structured packing[J]. Journal of Tianjin University, 2005, 38(7):586-591(in Chinese)