大亚湾核电站厂址区域大气扩散研究

采用一个基于流体静力平衡的动力学诊断模式对大亚湾核电站厂址区域的气象场进行实际模拟，研究了复杂地形和下垫面对流场的动力和热力作用。数值实验表明：模式能很好地模拟中尺度局地环流的基本特征和变化规律。在模拟气象场的基础上，利用Monte Carlo多源模式计算了污染物的时空分布和干湿沉积量。模拟结果显示：模式很好地反映在海陆风和山谷风环流及排牙山影响下大气参数的非均匀性和非平稳性。

A Numerical Study of Atmospheric Dispersion in the Area of Nuclear Power Plant Dayawan

A dynamic diagnostic model based on hydrostatic equilibrium was applied to simulate meteorological fields in the area of Nuclear Power Plant Dayawan, dynamic and thermal effects of non-homogeneous underlying surface upon wind field were investigated Numerical experiment shows that, this model can simulate basic characteristics and variation rules of local terrain-induced circulation very well With simulated meteorological fields, tempo-spatial distribution of pollutant and its deposition amount were studied by using Monte Carlo model for multiple sources Simulated results assert that, Monte Carlo model for multiple sources can simulate non-homogeneity and non-stability of atmospheric parameters under influences of land-sea and mountain-valley circulation