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首页> 外文期刊>World review of science, technology and sustainable development >Numerical comparison of dispersion of human exhaled droplets under different ventilation methods
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Numerical comparison of dispersion of human exhaled droplets under different ventilation methods

机译：不同通风方式下人呼出小滴弥散的数值比较

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摘要

Stratum ventilation has been proposed to accommodate elevated room temperatures recommended by several governments in East Asia for energy saving. One key issue in evaluating the performance of stratum ventilation is whether this air distribution method performs significantly different in person to person infectious diseases transmissions. Particle dispersion in a classroom under mixing ventilation, displacement ventilation and stratum ventilation respectively are investigated by numerical simulation. The drift-flux model based on an Kulerian-Kulerian approach is adopted to simulate the particle movement in a room. The results show that the flow patterns created by different ventilation methods have great influence on the particle fates. The particle concentrations for the breathing zone under stratum ventilation are significantly lower than that under mixing ventilation and/or that under displacement ventilation, which imply that the risk of pathogen inhalation under stratum ventilation is lower than that under mixing ventilation and/or displacement ventilation.
机译：已经提出了分层通风以适应东亚一些国家政府为节约能源而建议的升高的室温。评估分层通风性能的一个关键问题是这种空气分配方法在人与人之间传染病传播方面是否表现出显着差异。通过数值模拟研究了混合通风，置换通风和地层通风下教室内颗粒物的分散情况。采用基于Kulerian-Kulerian方法的漂移-通量模型来模拟房间中的粒子运动。结果表明，不同通风方式产生的流动方式对颗粒的命运有很大的影响。分层通风下呼吸区的颗粒物浓度明显低于混合通风和/或置换通风下的浓度，这意味着在分层通风下病原体吸入的风险低于混合通风和/或置换通风下的病原体吸入风险。

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    Zhang Lin; Jinliang Wang; Ting Yao; T.T. Chow; K.F. Fong;

  • 作者单位

    Building Energy and Environmental Technology Research Unit,Division of Building Science and Technology,City University of Hong Kong,83 Tat Chee Avenue, Kowloon, Hong Kong;

    Building Energy and Environmental Technology Research Unit,Division of Building Science and Technology,City University of Hong Kong,83 Tat Chee Avenue, Kowloon, Hong Kong;

    Building Energy and Environmental Technology Research Unit,Division of Building Science and Technology,City University of Hong Kong,83 Tat Chee Avenue, Kowloon, Hong Kong;

    Building Energy and Environmental Technology Research Unit,Division of Building Science and Technology,City University of Hong Kong,83 Tat Chee Avenue, Kowloon, Hong Kong;

    Building Energy and Environmental Technology Research Unit,Division of Building Science and Technology,City University of Hong Kong,83 Tat Chee Avenue, Kowloon, Hong Kong;

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  • 正文语种 eng
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  • 关键词

    air distribution; stratum ventilation; anti-airborne infection performance;

    机译：空气分配地层通风抗空气传播的感染表现;

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