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SUMMARY:Stuck in the mud? Channelling\, clogging and burrowing in plastic 
 fluids - Duncan R Hewitt\, University of Cambridge
DTSTART:20231020T150000Z
DTEND:20231020T160000Z
UID:TALK206032@talks.cam.ac.uk
CONTACT:Hatice Balci
DESCRIPTION:Numerous natural and industrial materials\, ranging from lava\
 , mud and waste slurries to foodstuffs\, blood and mucus\, exhibit both fl
 uid-like and solid-like behaviour: they can flow like a viscous fluid unde
 r sufficient force\, but withstand deformation at lower stresses. Clogging
  and flow localisation in such materials is a generic\, and often somewhat
  serious\, feature of their mechanics. This talk will explore some basic f
 luid mechanical behaviour of idealised viscoplastic materials under confin
 ed or obstructed conditions\, revealing details of how clogging and channe
 lling are manifest in different settings. Mechanisms for locomotion throug
 h such a material by means of burrowing will also be briefly discussed. Th
 e focus is to uncover fundamental behaviour of these materials using theor
 etical\, numerical and experimental means. Some physical implications will
  be discussed. 
LOCATION:MR2
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