Effect of Surface Structure on Liquid Wettability at ... - COMSOL.com

Fluid Flow Model• Lubrication approximation used to model fluid flow.• Navier slip (solid-liquid interface) and Marangonishear (liquid-vapor interface) boundary conditionsapplied• Mass balance provides the evaporating mass flux at each pixel location.• Temperature dependence <strong>of</strong> fluid properties accounts for the capillary, Marangoni and vander Waals forces.µ d2 udz = dP l2 dyz = 0,u s= β dudz z = 0z = δ( y), τ zy= dσ lvdyP l(y) = P v− ⎡⎣ σ(y)K(y) + Π(y) ⎤ ⎦Γ =δdΓ∫ ρ lu dy q ′′ = − h fgdy0COMSOL User's Conference, Boston 7