流体工学特論２

1. Wetting - by Timothée MOUTERDE Basics of static wetting: Surface tension, wetting of ideal solids, static contact angle, meniscus shape and drops shapes, wetting of tubes, floating objects. Interfacial dynamics: Capillary rise, spreading, Landau-Levich-Derjaguin’s law, Marangoni flows (thermal and chemical). Interfacial dynamics and instabilities: Dynamic contact angle, Rayleigh-Taylor, Plateau-Rayleigh, Dewetting (Taylor-Culick). Wetting of real surfaces: Contact angle hysteresis, wetting of microtextured solids, Wenzel and Cassie-Baxter states, superhydrophobic and liquid-infused surfaces. Drops’ dynamics on non-wetting surfaces. 2. Stokes Flow - by Timothée MOUTERDE Dimensional analysis, Kinematic reversibility, Stokes flows. Flow around a particle and droplet, Reynolds equation for hydrodynamic lubrication. 3. Micro/Nanofluidics and Colloid Science - by Wei-Lun HSU History of micro/nanofluidics, electrokinetic phenomena. Electrostatics, electric double layer, Poisson-Boltzmann equation Gouy-Chapman-Stern-Grahame model. Electroosmosis in a slit channel, electroosmosis in a cylindrical tube, nonlinear electroosmosis in a short channel. Electrophoresis (Smolchowski and Hückel equations), dielectrophoresis, Brownian motion. DLVO theory, non-Newtonian fluids, viscometers, viscoelastic flow behavior. 4. Two-Phase Flow - by Wei-Lun HSU Clausius-Clapeyron relation, cavitation, homo/heterogeneous bubble nucleation, Rayleigh-Plesset equation, stability of bubbles. Pool boiling, boiling curve, critical heat flux, Kelvin Helmholtz instability, Taylor Rayleigh instability. ----------------------------------------------- Final Exam

lectures, exercises, discussions

Attendance & Assignments 30% Final Examination 70%

Basic knowledge on fluid mechanics is required (undergraduate level).