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SUMMARY:Stirring the Cahn-Hilliard fluid - Dr Lennon O'Naraigh\, Chemical 
 Engineering\, Imperial College
DTSTART:20071101T113000Z
DTEND:20071101T123000Z
UID:TALK8689@talks.cam.ac.uk
CONTACT:Anne Alexander
DESCRIPTION:Abstract: The Cahn-Hilliard equation describes 'mixtures that 
 do not\nmix'\, for example oil and water.  There is a huge range of situat
 ions in\nwhich a phase-separating liquid might be stirred.  Examples inclu
 de\nadvection by an externally-imposed shear flow\, as in polymer physics\
 ; by\na chaotic mixing protocol\, as in the manufacture of emulsions\; or 
 by a\nself-consistent turbulent velocity field. In this more complicated c
 ase\,\nthe flow evolution and the phase-separation are coupled.  We outlin
 e the\ntheory and discuss these examples\, and introduce a new study: phas
 e\nseparation in thin films.\nThis particular application highlights the i
 mportance of modelling the\nfeedback of concentration gradients into the f
 low that stirs the\nmixture.
LOCATION:Open Plan Area\, BP Institute\, Madingley Rise CB3 0EZ
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