title: Electroosmotic Phenomena in Fractures.
abstract: Electroosmotic phenomena in fractures have been investigated in the linear limit for various double-layer thicknesses. The effects of the geometrical parameters were systematically studied for deterministic sinusoidal and random self-affine fractures. The numerical results show a definite influence of the surface amplitude on electroosmotic processes. For self-affine fractures, the roughness or Hurst exponent has a much larger incidence than the correlation parameter between the two surfaces. All the electroosmotic coupling coefficients can be gathered in a single relationship which depends on a characteristic length scale Lambda, applicable to every configuration. Such a length was already found useful for porous media, but the relationship is different. Copyright 2000 Academic Press.
authors.affiliation: IPGP, tour 24, 4, place Jussieu, Paris cedex 05, 75252, France
authors.initials: S
authors.lastname: Marino
authors.initials: D
authors.lastname: Coelho
authors.initials: S
authors.lastname: Békri
authors.initials: PM
authors.lastname: Adler