The line of contact of three fluid phases

摘要: We study the variation of density or chemical composition in neighborhood line which three phases meet and we determine associated tension. Three models are considered: a phenomenological model based on primitive approximation to excess free‐energy that arises from inhomogeneities at two‐phase interfaces three‐phase line; generalized van der Waals approximation, is sum an analytic function densities quadratic form gradients; microscopic three‐component, fluid, for properties determined mean‐field as solutions nonlocal functional equations. Both positive negative tensions found. In third model, when equations profiles approximated by gradient expansions truncated second orde...