三维大气扩散粒子分裂(ADPS)模式

A Three Dimensional Particle-Splitting Model for Atmospheric Dispersion

本文描述了基于PIC方法的三维大气扩散粒子分裂(ADPS)模式,并用解析解和1988年的广州地区现场观测资料验证了本模式.模式根据局地均匀和定常假设引入大粒子概念、烟团扩散原理和大粒子分裂技术,并运用了嵌套网格.ADPS模式用于模拟气态污染物在大气中的散布,同时也具备模拟TSP扩散的效能.

A Three-Dimensional Particle-Splitting Model for Atmospheric Dispersion (ADPS Model) which is based on the PIC method is described and tested with the analytical solutions and the data obtained in Guangzhou region in 1988 . The model introduces the nested grid capability and big particle definition , puff diffusion theorem and particle-Splitting technique under the assumption of the local time-independent and local spatial uniform. The model is used to simulate atmospheric dispersion of gaseous pollutant and also has the ability to simulate the TSP dispersion .