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

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Nonisothermal State Meniscus - Octane150000.75 W0.75 W4E-7Smooth quartz60 min etched30 min etchedDeposited oxideThickness (m)3E-72E-760 min etchedDeposited oxideCurvature (m -1 )10000500030 min etchedSmooth quartz1E-72E-86E-5 7E-5 8E-5Distance (m)00E+0 5E-8 1E-7 2E-7 2E-7 3E-7 3E-7Thickness (m)Octane (8-C) used as a working fluidCOMSOL User's Conference, Boston 6
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
Page 1 and 2: Presented at the COMSOL Conference
Page 3 and 4: Evaporation from Transition RegionE
Page 5: Reflectivity/Interferometry Techniq
Page 9 and 10: Simulation Results• COMSOL simula
Page 11 and 12: Simulation Results - Octane & Penta
Page 13 and 14: AcknowledgementsLiftof</str
Page 15: COMSOL User's Conference, Boston 15

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

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