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Dynamic capillary pressure in porous media : origin of the viscous-fingering length scale

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Weitz, D. A. , Stokes, J., Ball, Robin and Kushnick, A. (1987) Dynamic capillary pressure in porous media : origin of the viscous-fingering length scale. Physical Review Letters, Vol.59 (No.26). pp. 2967-2970. doi:10.1103/PhysRevLett.59.2967 ISSN 0031-9007.

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.59.2967

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Abstract

We measure the velocity dependence of the capillary pressure, ΔPc(v), between two fluids in a porous medium. At zero velocity, the interface is pinned, and a critical ΔPc must be achieved before the interface moves. For nonzero velocities, there is an additional dynamic component to ΔPc, which scales as v1/2 when a wetting fluid displaces a nonwetting fluid. We suggest that this dynamic component of ΔPc can stabilize viscous fingers, and obtain excellent agreement with experiment.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Viscosity, Viscous flow, Porous materials, Capillaries -- Permeability
Journal or Publication Title: Physical Review Letters
Publisher: American Physical Society
ISSN: 0031-9007
Official Date: 1987
Dates:
DateEvent
1987Published
Volume: Vol.59
Number: No.26
Page Range: pp. 2967-2970
DOI: 10.1103/PhysRevLett.59.2967
Status: Peer Reviewed
Publication Status: Published

Data sourced from Thomson Reuters' Web of Knowledge

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