Simulating Condensational Growth, Evaporation, and Coagulation of Aerosols Using a Combined Moving and Stationary Size Grid
Simulating Condensational Growth, Evaporation, and Coagulation of Aerosols Using a Combined Moving and Stationary Size Grid
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DOI：
10.1080/02786829408959729
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发表时间：
1995
影响因子：
5.2
通讯作者：
M. Jacobson;R. Turco
中科院分区：
文献类型：
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作者：
M. Jacobson;R. Turco
我们提出了一种数值方法模拟气溶胶的凝结，凝结的增长，蒸发的混合大小的网格。在混合网格中，不挥发性核材料的体积对于每个尺寸箱是恒定的，但是挥发性材料的体积波动。由于每个仓中的颗粒以自己的速度生长和蒸发，因此来自一个仓的颗粒可以获得与来自另一个仓的颗粒相同的体积，同时保持不同的组成。类似地，来自不同仓的增长到相同尺寸的颗粒可以蒸发回到它们各自的原始核心尺寸。允许粒子的独立生长抑制数值扩散，因为每个仓中的粒子生长或蒸发到其实际尺寸。当两个颗粒凝结时，它们形成新的颗粒，其核心体积在另外两个箱中的颗粒的核心体积之间。我们将新粒子和它的总体积划分在这两个箱子之间。同样地，我们调整其他过程，如成核，排放和运输。
We present a numerical method of simulating the aerosol processes of coagulation, condensational growth, and evaporation over a hybrid size grid. In the hybrid grid, the volume of involatile core material is constant for each size bin, but the volume of volatile material fluctuates. Since particles in each bin grow and evaporate at their own pace, particles from one bin can obtain the same volume as those from another bin while maintaining different composition. Similarly, particles from different bins that grow to the same size can evaporate back to their respective original core sizes. Allowing independent growth of particles inhibits numerical diffusion since particles in each bin grow or evaporate to their actual sizes. When two particles coagulate, they form a new particle with core volume between the core volumes of particles in two other bins. We partition the new particle and its total volume between these two bins. Similarly, we adapt other processes, such as nucleation, emissions, and transport ...