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在计算机生成的二维多晶上,利用不均匀晶粒的熟化机理,对薄膜中的缩聚型分形进行了计算机模拟.分析了影响缩聚过程的各主要因素,引入了三个参数:晶界速率因子b,弛豫范围L和周界曲率因素U.在一定的参数范围内,均可得到与实验图像相类似的多分叉的分形图样The formation of aggregation fractals in thin polycrystalline bilayer films has been simulated by using the ripening mechanism of nonuniform grains.Based on the analysis of the aggregation of thin films,three parameters are introduced:the velocity factor of grain boundary b,the relaxation range L and the curvature factor U.By using certain values of such parameters,the simulation results are consistent with the patterns formed in experiments.
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