A functional relationship between capillary pressure, saturation, and interfacial area as revealed by a pore-scale network model

被引:316
作者
Reeves, PC
Celia, MA
机构
[1] Water Resources Program, Dept. Civ. Eng. and Operations Res., Princeton University, Princeton, NJ
[2] Water Resources Program, Dept. Civ. Eng. and Operations Res., Princeton University, Princeton
关键词
NONAQUEOUS-PHASE LIQUIDS; UNSATURATED FLOW THEORY; MASS-TRANSFER RATES; POROUS-MEDIA; RELATIVE PERMEABILITY; MERCURY POROSIMETRY; 2-PHASE FLOW; HYDRODYNAMIC DISPERSION; PERCOLATION APPROACH; SUBSURFACE SYSTEMS;
D O I
10.1029/96WR01105
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The constitutive relationships required for the parameterization of multiphase flow and transport problems are of critical importance to hydrologic modeling. Recently, a hypothesis has been developed that predicts a functional relationship between capillary pressure, saturation, and interfacial area. A network model was developed to test this hypothesis. Microscale physical processes were simulated and volume averaging was used to derive the macroscopic measures of saturation and fluid-fluid interfacial area per volume of porous media. Results indicate that a smooth, though complex, functional relationship exists at the continuum scale. These results have direct relevance to constitutive theory and the modeling of nonaqueous phase liquid dissolution processes.
引用
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页码:2345 / 2358
页数:14
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