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Numerical investigation of SVOC mass transport in a tube by an axisymmetric lattice Boltzmann method

机译：轴对称晶格玻尔兹曼方法对管内SVOC传质的数值研究

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摘要

This paper presents an adsorption boundary condition based on linear adsorption isotherm for Lattice Boltzmann (LB) model. An axisymmetric 2-D LB model is built for an axisymmetric device. The model is used to study the effects of surface adsorption and airflow on SVOC mass transport in the device. In terms of surface adsorption, the research is divided in two parts: pure diffusion and convection-diffusion. The results show that the simulated data based on the presented adsorption boundary agree well with experimental data. In both the pure diffusion and advection-diffusion process, surface adsorption has no impact on the steady-state concentration, but it affects the time to reach steady state. Airflow greatly reduces both the time to reach steady state and the steady-state concentration. An exponential relationship involving h(m), ACH and velocity is proposed and verified experimentally. Discussion on the parameter n in the exponential relation is conducted.
机译：本文提出了基于线性吸附等温线的格子边界玻尔兹曼（LB）模型的吸附边界条件。针对轴对称设备建立了轴对称二维LB模型。该模型用于研究表面吸附和气流对设备中SVOC物质传输的影响。在表面吸附方面，研究分为两部分：纯扩散和对流扩散。结果表明，基于给出的吸附边界的模拟数据与实验数据吻合良好。在纯扩散和对流扩散过程中，表面吸附对稳态浓度没有影响，但会影响达到稳态的时间。气流大大减少了达到稳态所需的时间和稳态浓度。提出了涉及h（m），ACH和速度的指数关系，并进行了实验验证。讨论了指数关系中的参数n。

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  • 来源
    《Building and Environment》 |2018年第1期|180-189|共10页
  • 作者

    Mao Yun-Feng; Li Zhuo; Mu Yu-Tong; He Ya-Ling; Tao Wen-Quan;

  • 作者单位

    Tongji Univ, Coll Environm Sci & Engn, State Key Lab Pollut Control & Resources Reuse, Shanghai 200092, Peoples R China;

    Tongji Univ, Coll Environm Sci & Engn, State Key Lab Pollut Control & Resources Reuse, Shanghai 200092, Peoples R China;

    Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Sch Energy & Power Engn, Key Lab Thermofluid Sci & Engn MOE, Xian 710049, Shaanxi, Peoples R China;

    Tongji Univ, Coll Environm Sci & Engn, State Key Lab Pollut Control & Resources Reuse, Shanghai 200092, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Semi-volatile organic compounds; Lattice Boltzmann method; Airflow; Adsorption boundary condition; Axisymmetric model;

    机译：半挥发性有机化合物格子波尔兹曼法气流吸附边界条件轴对称模型;

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