Da. Nield, MODELING THE EFFECT OF SURFACE-TENSION ON IMMISCIBLE DISPLACEMENT IN A SATURATED POROUS-MEDIUM, Transport in porous media, 32(2), 1998, pp. 233-236
Comments are made about the model employed by Chen and Vafai for force
d convection in a porous medium channel, with a surface tension effect
at the moving interface between two fluids, when one fluid is displac
ed by the other. A simple situation is analysed, and the circumstances
under which surface tension effects are important in this case are cl
arified.