CIESC Journal ›› 2015, Vol. 66 ›› Issue (3): 932-941.DOI: 10.11949/j.issn.0438-1157.20140884

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CFD simulation of bubble column with vertical bundle internals

LI Zhaoqi, ZHAO Yuanfang, GUAN Xiaoping, WANG Lijun, CHENG Youwei, LI Xi   

  1. Department of Chemical Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China
  • Received:2014-06-12 Revised:2014-12-16 Online:2015-03-05 Published:2015-03-05
  • Supported by:

    supported by the National High Technology Research and Development Program of China (2011AA05A205) and the National Natural Science Foundation of China (U1162125, U1361112).

含垂直列管束内构件鼓泡塔的CFD模拟

李兆奇, 赵远方, 管小平, 王丽军, 成有为, 李希   

  1. 浙江大学化学工程与生物工程学系, 浙江 杭州 310027
  • 通讯作者: 王丽军
  • 基金资助:

    国家高技术研究发展计划项目(2011AA05A205);国家自然科学基金项目(U1162125,U1361112)。

Abstract:

For gas-liquid bubble column with dense vertical bundle internals, the resistance force of bundles on gas and liquid phases was taken into account in the two-phase Euler axisymmetric k-ε model. By introduction of corresponding momentum source, turbulence source and dissipation source, a 2-D CFD model of bubble column with bundle internals was established. The model could clearly and accurately demonstrate the features of gas-liquid flow in bubble column with bundles: "funnel effect" and extension of sparger zone. The calculated two-dimensional distributions of hold-up and liquid velocity agreed with experimental data within a wide range of superficial gas velocity (0.12—0.62 m·s-1).

Key words: bubble column, dense vertical bundles, internals, CFD, model

摘要:

针对含有密集垂直列管束内构件的气液鼓泡塔,在两相Euler二维轴对称k-ε模型中,分别考虑气相和液相受到的列管阻力。通过引入相应的动量源、湍动源以及耗散源建立带列管内构件的鼓泡塔二维CFD模型。模型能清晰、准确地描述带列管束鼓泡塔中气液流动的特征:"烟囱效应"以及分布器影响区延长。计算得到的气含率以及液速的二维分布在宽泛的表观气速(0.12~0.62 m·s-1)范围内与实验值相符。

关键词: 鼓泡塔, 密集列管束, 内构件, 计算流体力学, 模型

CLC Number: