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SUMMARY:Hydrodynamic singularities in soft matter flows - Vatsal Sanjay (U
 niversity of Twente)
DTSTART:20250120T140000Z
DTEND:20250120T150000Z
UID:TALK226270@talks.cam.ac.uk
CONTACT:Anand Srinivasan
DESCRIPTION:Soft matter flows often display hydrodynamic singularities dri
 ven by the interplay of several forces\, such as capillarity\, inertia\, v
 iscosity\, and elasticity. This talk explores these singularities across d
 rops\, bubbles\, and thin films\, drawing on experiments\, direct simulati
 ons\, and theory. First\, we investigate Worthington jets formed by drop i
 mpacts on superhydrophobic substrates\, where discrete peaks in normal for
 ce signal singular events. Next\, we examine bursting bubbles in Newtonian
  and viscoelastic media\, linking elastic and viscous stresses to jet form
 ation and droplet generation. Lastly\, for retracting liquid films\, we sh
 ow that the classical Taylor–Culick retractions feature singular limits 
 owing to viscous anomaly in the Newtonian and elastic stress blowup in the
  elastic limit. We explore the multidimensional phase space and uncover no
 vel insights into the physics governing these systems. The insights develo
 ped have direct implications for designing manufacturing processes\, contr
 olling droplet transport\, and mitigating pathogen dispersal.
LOCATION:MR12\,  Centre for Mathematical Sciences\, Wilberforce Road\, Cam
 bridge
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