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模拟街道峡谷内的流场和污染物浓度的格子玻尔兹曼方法
樊冬梅,朱玲
0
(安徽农业大学理学院,合肥230036)
摘要:
构造了模拟街道内的流场及污染物扩散的格子玻尔兹曼模型,并且用这个模型来模拟了不同高宽比的街道峡谷流场和污染物扩散情况。模拟结果表明,地面附近的污染物浓度随着街道高宽比的增加而递增,这一结果和以往的研究结果有很好的一致性。
关键词:  格子玻尔兹曼方法  空气污染
DOI:CNKI:34-1162/S.20111025.1025.007
投稿时间:2011-06-13
基金项目:安徽农业大学青年科学基金项目(2009zr29)资助。
Lattice Boltzmann method for simulation of air flow and pollutant dispersion in street canyon
FAN Dong-mei,ZHU Ling
(School of Science, Anhui Agricultural University, Hefei 230036)
Abstract:
A new lattice Boltzmann method model was constituted to simulating the flow patterns and pollutant dispersion in street canyons, and it was applied to simulating the flow patterns and pollutant dispersion of different street canyon aspect ratio (AR=H/W). The results show that it makes more difficult to disperse the pollutants and more concentration near the ground level with increasing the aspect ratio. The numerical results are found to be in better agreement with those of previous studies.
Key words:  Lattice Boltzmann method  air pollution

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