考虑人群移动影响的二维室内污染物扩散模拟方法研究

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关键词：格子Boltzmann;致动点模型;浅通道近似；社会力模型;大涡模拟；污染物扩散 中图分类号：O35;TB126文献标志码：A DOI：10.11776/j. issn. 1000-4939. 2026. 02.018 文章编号：1000-4939（2026）02- 0440-13 CSTR：32414. 14. cjam. issn. 1000-4939. 2026.02.018

A study of two-dimensional indoor pollutant dispersion modeling method considering the effect of crowd movement

CHENLi，YANG Kang，ZHANG Jinggang，HUANG Minghua，CUI Haihang （School of Building Services Science and Engineering，Xi'an University of Architecture andTechnology，710055Xi'an，China）

Abstract：This study proposes a coupled fluid dynamics and crowd dynamics simulation method aimed at exploring the impact of large indoor crowd movements on pollutant dispersion.Traditional dynamic mesh techniques demand substantial computational resources when simulating large crowds. Considering the complexity of predicting group behavior patterns，we employ an actuator line model to substitute for the real-volume human body geometry to simulate wake phenomena.A social force model is introduced to describe microscopic crowd motion，and a shallow channel approximation method simplifies the three-dimensional model to two dimensions to enhance computational eficiency.The flow model utilizes the lattie Boltzmann method （LBM） coupled with large eddy simulation，introducing human motion into the LBM evolution equation as distributed force source terms.The pollutant dispersion model employs the clasical dual-distribution function model within LBM.Theaccuracy and reliabilityof this method were validated by comparison with clasical dynamic mesh three-dimensional model results，and its feasibility in practical applications was further verified through specific case studies.

Key words：lattice Boltzmann method;actuator line model; shallow channel approximation;social force model; large eddy simulation ;pollutant dispersion

当今世界，随着人口密集度的提升和全球交流的加深，室内环境中传染病的传播成为了公共健康领域日益关注的问题[1-3]。（剩余18718字）