Local-scale atmospheric dispersion modeling for emergency response to releases of hazardous materials in urban areas

我们的目标是提出一种通过耦合数值天气预报(NWP)和大涡模拟(LES)计算流体力学(CFD)模式来预测局地尺度大气扩散行为的方法。通过与建筑物阵列内湍流和羽流扩散的风洞实验数据以及东京中心城区的观测数据的比较，验证了该模型的基本性能。由此得出的结论是，我们的方法适用于危险物质意外和故意释放以及核灾难造成的城市分散问题。

Our objective is to propose an approach to predict local-scale atmospheric dispersion behaviors by coupling between numerical weather prediction (NWP) and large-eddy simulation (LES) based computational fluid dynamics (CFD) models. We validated the basic performance of our model by comparing to the wind tunnel experimental data of turbulent flows and plume dispersion in building arrays, and the observed data over the central city area of Tokyo. From the above-mentioned, it is concluded that our approach is applicable to the problems of urban dispersion by accidental and intentional release of hazardous materials and nuclear disasters.