Flow and transport modeling in the sea-breeze part II: Flow model application and pollutant transport
Flow and transport modeling in the sea-breeze part II: Flow model application and pollutant transport
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海风中的流动和传输建模第二部分：流动模型应用和污染物传输
DOI：
10.1007/bf00712695
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发表时间：
1995
影响因子：
4.3
通讯作者：
D. Reible
中科院分区：
文献类型：
--
作者：
Y. Koo;D. Reible
本文采用一个改进的E-∈非静力模式，采用非平衡2.5层封闭，模拟了海风中的流动和污染物动力。该模型预测的海风，如中午减慢内陆渗透，快速和深入的内陆渗透在下午晚些时候，和分离的海风在傍晚从喂养流观察到的关键特征。傍晚，由于地面冷却，陆地上的湍流混合减弱，形成锋面密度流，预报的结构与密度流的观测和实验结果符合得很好。陆地上的湍流混合是控制中午减缓和傍晚锋面发展的关键参数。计算的热内边界层和高架线源的熏烟与观测和相似理论吻合得很好。计算表明，残留羽高空在海上返回陆上在地面水平在下午海风，并在第二天地面浓度有很大的影响。
A modifiedE-∈ non-hydrostatic model with non-equilibrium level 2.5 closure was applied to the flow and pollutant dynamics in the sea-breeze. The model predicts key observed characteristics of the sea-breeze, such as midday slowing of inland penetration, fast and deep inland penetration in late afternoon, and detachment of the sea-breeze from the feeding flow in early evening. In late evening when the turbulent mixing over the land subsides due to the surface cooling, a frontal density current is formed and the predicted structure is in good agreement with observations and laboratory experiments of density currents. Turbulent mixing over the land is a key parameter that controls midday slowing and late afternoon frontal development.The calculated thermal internal boundary layer and fumigation of an elevated line source show good agreement with observations and similarity theory. Calculations suggest that the residual plume aloft over the sea returns onshore at ground level during the afternoon sea-breeze and has a large impact on ground-level concentrations during the following day.