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SUMMARY:Modelling coarsening in wet foams using the bubble model - Tudur D
 avies (Aberystwyth University)
DTSTART:20230824T130000Z
DTEND:20230824T133000Z
UID:TALK204034@talks.cam.ac.uk
DESCRIPTION:Liquid foams consist of gas bubbles and liquid carrying channe
 ls called Plateau borders. A foam can be categorised as being dry or wet\,
  depending on how much liquid is contained in the Plateau borders. A dry f
 oam consists of a packing of polyhedral shaped bubbles separated by thin f
 ilms. In a wet foam\, the Plateau borders are more swollen and the bubbles
  retain a more spherical shape. &nbsp\;In the wet limit\, approximating bu
 bbles as soft discs (in 2D) or soft spheres\, as done by Durian&rsquo\;s b
 ubble model [1]\, becomes justified. In this simple and efficient model\, 
 bubble motion is determined by a repulsion between overlapping neighbourin
 g bubbles and a viscous drag force. One aspect of foam behaviour that the 
 model has been used to probe is coarsening due to gas diffusion between ne
 ighbouring bubbles [2\,3]. We will revisit this work\, and explore how the
  model encapsulates the coarsening dynamics of wet foams\, both in 2D and 
 3D\, and probe how bubbles rearrange during the process.\n[1] Durian\, D. 
 J.\, Phys Rev Lett\, 1995\, 75\, 4870\n[2] Gardiner\, B. et al.\, Phil. Ma
 g. A\, 2000\, 80\, 981-1000\n[3] Khakalo\, K et al.\, Phys. Rev. E\, APS\,
  2018\, 98\, 012607
LOCATION:External
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