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arXiv 0907.1768cond-mat.stat-mech
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确定两种尺寸重叠圆盘连续渗流临界阈值的标度关系

Scaling relation for determining the critical threshold for continuum percolation of overlapping discs of two sizes

Ajit C. Balram, Deepak Dhar

摘要:

我们研究两种尺寸的重叠圆盘的连续渗流。我们提出了一个现象学的缩放方程的有效尺寸的较大的光盘,由于存在较小的光盘的增加。对于两个圆盘的相对面密度的不同值,作为圆盘尺寸比的函数的临界逾渗阈值可以用仅一个变量的标度函数来描述。Quintanilla和Ziff [Phys. Rev. E,76 051115(2007)]最近对临界阈值的精确Monte Carlo估计与所提出的标度关系非常一致。

英文摘要:

We study continuum percolation of overlapping circular discs of two sizes. We propose a phenomenological scaling equation for the increase in the effective size of the larger discs due to the presence of the smaller discs. The critical percolation threshold as a function of the ratio of sizes of discs, for different values of the relative areal densities of two discs, can be described in terms of a scaling function of only one variable. The recent accurate Monte Carlo estimates of critical threshold by Quintanilla and Ziff [Phys. Rev. E, 76 051115 (2007)] are in very good agreement with the proposed scaling relation.

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