BUOYANCY-DRIVEN FLUID MIGRATION IN POROUS-MEDIA

被引:105
作者
FRETTE, V [1 ]
FEDER, J [1 ]
JOSSANG, T [1 ]
MEAKIN, P [1 ]
机构
[1] DUPONT CO, DEPT CENT RES & DEV, WILMINGTON, DE 19880 USA
关键词
D O I
10.1103/PhysRevLett.68.3164
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The slow upward migration, due to buoyancy, of a nonwetting fluid through a saturated, three-dimensional porous medium has been studied experimentally, and by computer simulations. The height h of the invading fluid structure is proportional to the mass M of the invading fluid. The linear mass density S = M/h is found to scale with the dimensionless Bond number Bo (ratio of buoyancy and capillary forces) as S = A\Bo\-alpha, with alpha = 0.72 +/- 0.06, consistent with theory and simulations. A noisy behavior in h(M) results from dynamical processes such as snapoffs and bursts.
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页码:3164 / 3167
页数:4
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