气溶胶凝聚粒子的分形模拟

Fractal simulation of aerosol aggregation particles

分析了大气气溶胶特性的研究意义及气溶胶粒子的分形特征。基于DLA模型模拟了不同原始微粒数目凝聚生长的分形气溶胶凝聚粒子,并将模拟结果与实验观察结果相比较,验证了模拟结果的可靠性。给出了凝聚粒子分形维数随原始微粒数目的变化曲线,结果显示,原始微粒数目直接影响凝聚粒子的分形维数。

The fractal characteristics of aerosol particles and the pheric aerosol property were analyzed. Based on the Diffusion-Limited significance of studying of atmos- Aggregation （DLA） model, the fractal aerosol aggregation particles with different number of original particles aggregation growth was sim- ulated, and the simulated results were compared with the experimental observation results which verify the reliability of the simulation results. Final, the variation curve of fractal dimension of aggregation particles changed with the number of original particles was given and the result shows that the number of original particles affect the fractal dimension of aggregation particles directly.