Interfacial Flows & Liquid-Liquid Dispersions

 

Through numerical studies, we examine the dynamics of thin liquid films driven by interfacial stresses arising from surface tension gradients (Marangoni stresses) and thermal gradients (thermocapillary stresses). In the former, we investigate at the effects of the presence of surfactants on drop coalescence, and in their wider context of the phase inversion of liquid-liquid dispersions. In the latter, we show through a normal modes analysis and a transient growth analysis that longwave instabilities due to transverse disturbances can lead to the dewetting of thin films and the formation of fractal-like fingering structures, as shown above.


  1. 1.LY Yeo, RV Craster, OK Matar. Marangoni Instability of a Thin Liquid Film Resting on a Locally Heated Horizontal Wall. Phys Rev E 67, 056315 (2003) (PDF).

  2. 2.LY Yeo, OK Matar. Hydrodynamic Instability of a Thin Viscous Film Between Two Drops. J Colloid Interface Sci 261, 575 (2003) (PDF).

  3. 3.LY Yeo, OK Matar, ES Perez de Ortiz, GF Hewitt. Film Drainage Between Two Surfactant Coated Drops Colliding at Constant Approach Velocity. J Colloid Interface Sci 257, 93 (2003) (PDF).

  4. 4.LY Yeo, OK Matar, ES Perez de Ortiz, GF Hewitt. A Description of Phase Inversion Behaviour in Agitated Liquid-Liquid Dispersions Under the Influence of the Marangoni Effect. Chem Eng Sci 57, 3505 (2002) (PDF).

  5. 5.LY Yeo, OK Matar, ES Perez de Ortiz, GF Hewitt. Simulation Studies of Phase Inversion in Agitated Vessels Using a Monte Carlo Technique. J Colloid Interface Sci 248, 443 (2002) (PDF).

  6. 6.LY Yeo, OK Matar, ES Perez de Ortiz, GF Hewitt. A Simple Predictive Tool for Modelling Phase Inversion in Liquid-Liquid Dispersions. Chem Eng Sci 57, 1069 (2002) (PDF).

  7. 7.LY Yeo, OK Matar, ES Perez de Ortiz, GF Hewitt. The Dynamics of Marangoni-Driven Local Film Drainage Between Two Drops. J Colloid Interface Sci 241, 233 (2001) (PDF).

  8. 8.LY Yeo, OK Matar, ES Perez de Ortiz, GF Hewitt. Phase Inversion and Associated Phenomena. Multiphase Science & Technology 12, 51 (2000) (PDF).


See also:

  1. 1.Surface acoustic wave interfacial jetting

  2. 2.Surface acoustic wave atomisation and associated phenomena

  3. 3.Electrohydrodynamically-Induced Interfacial Vortex & Spiral Flows

  4. 4.AC Electrospraying & Electrospinning

  5. 5.Electrowetting