Abstract

SANCHEZ, M.; MEDINA, A.  and  ROJANO, A.. Spontaneous imbibition in a porous medium under longitudinal temperature gradients. Rev. mex. fis. [online]. 2005, vol.51, n.4, pp.349-355. ISSN 0035-001X.

In this work, the influence of a longitudinal temperature gradient on the spontaneous imbibition into a homogeneous porous medium has been analyzed. Theory and experiments done on a permeable rock (Berea sandstone) allow us to show how this gradient modifies the temporal evolution of the averaged imbibition front h(t). Despite the existence of a thermal boundary layer outside the rock, experimental data are in good agreement with the theoretical profiles of h(t).

Keywords : Imbibition; Flow through porous media; Heat flow in porous media; Surface-tension-driven instability.

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