DYNAMICS OF SLOW DRAINAGE IN POROUS-MEDIA
DYNAMICS OF SLOW DRAINAGE IN POROUS-MEDIA
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DOI：
10.1103/physrevlett.68.2161
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发表时间：
1992-04-06
影响因子：
8.6
通讯作者：
JOSSANG, T
中科院分区：
文献类型：
--
作者：
MALOY, KJ;FURUBERG, L;JOSSANG, T
在一个二维多孔模型中缓慢排水过程中测得的压力波动表现出突然的跳跃，识别入侵前沿突然前进的突发。压力跃变的大小分布被观察到是指数。非标度动力学创建分形前锋和入侵渗透描述的入侵区域。一种新的改进的入侵渗流算法，包括入侵动力学。与每个接口喉部相关的容性体积导致从幂律行为到与观测一致的指数压力跃变分布的交叉。
Pressure fluctuations measured during slow drainage in a two-dimensional porous model exhibit sudden jumps that identify bursts where the invasion front proceeds abruptly. The pressure jump size distribution is observed to be exponential. The nonscaling dynamics created fractal fronts and invaded regions described by invasion percolation. A new modified invasion percolation algorithm includes invasion dynamics. A capacitive volume associated with each interface throat results in a crossover from power-law behavior to an exponential pressure jump distribution consistent with observations.