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SUMMARY:Surfactants in two-phase flow - Lam\, A (University of Warwick)
DTSTART:20140623T153000Z
DTEND:20140623T160000Z
UID:TALK53075@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:Co-authors: Harald Garcke (Universitat Regensburg)\, Bjorn Sti
 nner (University of Warwick) \n\nEmulsification is an important industrial
  process that involves mixing two or more fluids that normally are unmixab
 le. More precisely\, in the process of emulsification\, it is desirable to
  have stable dispersions of one fluid in another. Common examples of emuls
 ions are milk\, fire extinguishers and hand cream. The mixture is thermody
 namically unstable and will progressively revert back to their unmixed sta
 tes over time. Surface active agents (or surfactants) are often added to i
 ncrease the stability of the mixture and hence there is great interest\, e
 specially in industrial applications\, to understand the influence of surf
 actants on the dynamics of multi-fluid systems. \n\nIn this talk\, I will 
 outline the derivation of two new models on soluble surfactants in two pha
 se flow. The first is a sharp interface model that describes the interface
 s with moving hypersurfaces\, and the second is a phase field model. Both 
 models are thermodynamically consistent and generalise existing models in 
 the literature. I will then discuss the relationship between two models\, 
 which is supported with some numerical simulations.\n
LOCATION:Seminar Room 1\, Newton Institute
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