Large-eddy simulation of plume dispersion within regular arrays of cubic buildings
Large-eddy simulation of plume dispersion within regular arrays of cubic buildings
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DOI：
10.5194/asr-6-79-2011
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发表时间：
2011-04
影响因子：
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通讯作者：
H. Nakayama;K. Jurčáková;H. Nagai
中科院分区：
文献类型：
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作者：
H. Nakayama;K. Jurčáková;H. Nagai
抽象的。危险和易燃材料被意外或故意释放到人口稠密的城市地区，这是一个潜在的问题。在评估有毒物质对人体健康的危害时，应考虑烟羽中存在的高浓度峰。对于可燃气体的安全分析，应评估某些临界阈值水平。因此，在这种情况下，不仅要准确预测平均浓度，而且要准确预测瞬时浓度。在这项研究中，我们进行大涡模拟（LES）的羽流扩散规则阵列的立方体建筑物与大的障碍物密度和调查的平均和波动浓度的特征上的建筑物的安排的影响。
Abstract. There is a potential problem that hazardous and flammable materials are accidentally or intentionally released within populated urban areas. For the assessment of human health hazard from toxic substances, the existence of high concentration peaks in a plume should be considered. For the safety analysis of flammable gas, certain critical threshold levels should be evaluated. Therefore, in such a situation, not only average levels but also instantaneous magnitudes of concentration should be accurately predicted. In this study, we perform Large-Eddy Simulation (LES) of plume dispersion within regular arrays of cubic buildings with large obstacle densities and investigate the influence of the building arrangement on the characteristics of mean and fluctuating concentrations.