【摘 要】
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We present a computer model of diffusion limited aggregation with linear seed. The clusters with varying linear seed lengths are simulated, and their patte stru
【机 构】
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Department of Mathematics, Wuhan University of Science and Engineering, Wuhan 430073“,”Research Cent
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We present a computer model of diffusion limited aggregation with linear seed. The clusters with varying linear seed lengths are simulated, and their patte structure, fractal dimension and multifractal spectrum are obtained.The simulation results show that the linear seed length has little effect on the patte structure of the aggregation clusters if its length is comparatively shorter. With its increasing, the linear seed length has stronger effects on the patte structure, while the dimension Df decreases. When the linear seed length is larger, the corresponding patte structure is cross alike. The larger the linear seed length is, the more obvious the cross-like structure with more particles clustering at the two ends of the linear seed and along the vertical direction to the centre of the linear seed. Furthermore, the multifractal spectra curve becomes lower and the range of singularity narrower.The longer the length of a linear seed is, the less irregular and nonuniform the patte becomes.
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