Macroscopic capillarity, or macrocapillarity for short, refers to capillary phenomena occurring during twophase and multiphase flow in porous media. Wetting phenomena and hysteresis in porous media are at present poorly understood in the sense that neither in physics nor in engineering a fully predictive theory seems to exist, that can describe or predict all observations. This paper extends the consitutive assumptions of a recent approach based on the concept of hydraulic percolation of fluid phases. The theory proposed here allows prediction of residual saturations. It can describe displacement processes in which imbibition and drainage occur simultaneously. This contrasts with the established traditional theory where capillary forces are lumped into capillary pressure function and relative permeabilities, and these functions need to be specified for each displacement process as input. Contrary to the traditional theory the approach advanced here allows to predict capillary pressure saturation relations as output.
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21 January 2009
MODELING AND SIMULATION OF NEW MATERIALS: Proceedings of Modeling and Simulation of New Materials: Tenth Granada Lectures
15–19 September 2008
Granada (Spain)
Research Article|
January 21 2009
Modeling and simulation of macrocapillarity
R. Hilfer
R. Hilfer
ICP, Univ. Stuttgart, 70569 Stuttgart Inst. f. Physik, Univ. Mainz, 55099 Mainz
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AIP Conf. Proc. 1091, 141–150 (2009)
Citation
R. Hilfer; Modeling and simulation of macrocapillarity. AIP Conf. Proc. 21 January 2009; 1091 (1): 141–150. https://doi.org/10.1063/1.3082273
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