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首页> 外文期刊>International Journal of Heat and Mass Transfer >An anisotropic turbulent mass transfer model for simulation of pilot-scale and industrial-scale packed columns for chemical absorption
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An anisotropic turbulent mass transfer model for simulation of pilot-scale and industrial-scale packed columns for chemical absorption

机译：各向异性湍流传质模型，用于模拟中试规模和工业规模填充塔的化学吸收

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摘要

An anisotropic turbulent mass transfer model, namely the Reynolds mass flux model (RMF), for simulating the chemical absorption process in packed column is introduced by the use of combined computational methodology. With the present model, the concentration and temperature as well as velocity distributions can be simultaneously obtained. The feature of the proposed model is that the modeled Reynolds mass flux equation is adopted to close the turbulent mass transfer equation so that the Boussinesq's postulation is abandoned and consequently the anisotropy of turbulent mass diffusion can be characterized. The present model is accompanied by the formulations of computational fluid dynamics (CFD) and computational heat transfer (CHT). In mathematical expression of CFD and CHT, the Reynolds stress and Reynolds heat flux equations are used to close the turbulent momentum and heat transfer equations. The simulated results are validated with experimental data for pilot-scale and industrial-scale packed columns and satisfactory agreement is found between them. Furthermore, the Reynolds mass flux and the anisotropic turbulent mass diffusion are characterized and discussed.
机译：通过组合计算方法，引入了各向异性湍流传质模型，即雷诺质量通量模型（RMF），用于模拟填充塔中的化学吸收过程。使用本模型，可以同时获得浓度和温度以及速度分布。该模型的特点是采用了建模的雷诺质量通量方程来封闭湍流传质方程，从而放弃了Boussinesq的假设，从而可以表征湍流质量扩散的各向异性。本模型附带了计算流体动力学（CFD）和计算传热（CHT）的公式。在CFD和CHT的数学表达式中，雷诺应力和雷诺热通量方程式用于关闭湍动量和传热方程式。用中试规模和工业规模填充塔的实验数据验证了模拟结果，并在它们之间找到了令人满意的协议。此外，表征和讨论了雷诺质量通量和各向异性湍流质量扩散。

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  • 作者

    Wenbin Li; Kuotsung Yu; Xigang Yuan; Botan Liu;

  • 作者单位

    State Key Laboratory for Chemical Engineering and School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China;

    State Key Laboratory for Chemical Engineering and School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;

    State Key Laboratory for Chemical Engineering and School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;

    State Key Laboratory for Chemical Engineering and School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Absorption; Computational mass transfer; Anisotropic turbulent mass diffusion; Packed bed; Simulation; Turbulence;

    机译：吸收计算传质;各向异性湍流质量扩散;床铺模拟;湍流;

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