COURSE PROGRAM


 

Contents

  • I1 Introduction and basic concepts. Gallery of basic phenomena, micro- to macro- scale (molecular dynamics/continuum approaches), contact angle, Young equation, Laplace pressure, Free Gibbs Energy, Marangoni effects - Amirfazli
     
  • I2 Introduction to fluid mechanics of liquid interfaces. Basic equations, Navier-Stokes equations for capillary flows, liquid jet break-up - Marengo
     
  • I3 Surface tension & measurement techniques. Equilibrium and dynamic surface tension. De Nouy/Wilhelmy, sessile drop and pendant drop (ADSA), maximum bubble pressure. - Bertola
     
  • D1 Dynamics of drops deposited on a surface. Sessile drops, spreading law, apparent and real contact angles. Drop shedding, contact angle hysteresis. - Amirfazli
     
  • D2 Introduction to drop-wall interactions. Drop impact on dry and wetted surfaces. Morphology. Shallow and thick layers. Splashing correlations. - Marengo
     
  • D3 Drop impact with a solid surface. Impact regimes, impact models, drop rebound. - Bertola
     
  • D4 Heat and mass transfer in drops. Mono-component droplet heating and evaporation. Abramzon and Sirignano model. - Sazhin
     
  • D5 Drop impact on heated surfaces. Introduction to drop impact onto heated surfaces. Impact regime maps. Transitions. Dynamic Leidenfrost temperature. Control of secondary atomization and splashing. - Bertola
     
  • D6 Drop-drop collision. Phenomenology and collision regimes. Survey of modelling and simulation results. - Marengo
     
  • A1 Superhydrophobicity. Application of superhydrophobic surfaces. Cassie-Wenzel and competing theories. Types of SHS and manufacturing techniques. Impact on SHS surfaces. Impalement transition. - Amirfazli
     
  • NN1 Introduction to non-Newtonian fluids. Constitutive models and practical examples (polymer solutions and melts, gels, etc.). Power-law fluids, viscoplastic fluids, viscoelastic fluids. Non-Newtonian fluid design. Elements of rheological measurements. - Bertola
     
  • D7 Survey of Direct Numerical Simulation (DNS) methods for interfacial flow phenomena. Basic equations. VOF and LS techniques, Interfaces with phase change. Georgoulas
     
  • NN2 Impact of non-Newtonian drops. Formation of non- Newtonian droplets by capillary breakup. Impact of power- law and viscoplastic drops on solid surfaces. Impact of dilute polymer solution drops. Dynamic wetting. - Bertola
     
  • A2 Applications of what you learned in the course. Inkjet technology: Design of printheads, waveforms, ink formulations. Metal deposition. 3D printing. Microlens manufacturing. - Bertola
     
  • S1 Physics of sprays and applications. Spray formation, atomization models. Evaporation, gas entrainment, impact. - Marengo
     
  • S2 Spray characterization. Measurement of drop size and drop flux densities. Optical techniques. Counting and integral methods. Point and planar techniques. Advantages and disadvantages. - Crua
     
  • S3 VOF modelling. Wettability models, film splashing and single droplet evaporation. - Nikolopoulos
     
  • NN3 Non-Newtonian sprays. Capillary breakup with non-Newtonian fluids. Characteristics of non-Newtonian sprays - Bertola
     
  • A3 Other applications. Icing and anti-icing techniques. Formation of ice, morphology. Applications (aircraft, helicopter, wind turbine, cables). Anti-icing and de-icing strategies. - Amirfazli
     
  • ES1 Fuel sprays. Nozzle flow, atomization, evaporation, sub- and super-critical mixing of liquid fuels. Crua
     
  • ES2 Multi-component droplet heating and evaporation. application to automotive fuel droplets. Sazhin
     
  • ES3 Numerical simulation of spray development. basics and applications to droplet impacts onto catalytic particles in Fluid Catalytic Crackers - Nikolopoulos