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SUMMARY:Coating Liquid Films down a Vertical Fibre - Zing Ding\, Harbin\, 
 Institute of Technology\, China
DTSTART:20210507T150000Z
DTEND:20210507T160000Z
UID:TALK160459@talks.cam.ac.uk
CONTACT:virginia mullins
DESCRIPTION:Previous experimental study by Kliakhandler et al. (JFM 429:38
 1-390\, 2001) reported three different flow patterns of a liquid film flow
 ing down a vertical cylinder. The film flow is unstable due to the famous 
 Plateau-Rayleigh mechanism\, which evolves into organised droplets flow pa
 tterns. When the flow rate is high\, steady moving droplets separated by a
  long-thin film were observed. When the flow rate is reduced\, necklace-li
 ke flow structure was seen. When the flow rate is very small\, droplets of
  multi-scales were observed and complex dynamical interactions between the
 se droplets cause an unsteady flow. However\, no previous theoretical mode
 l correctly predicted the droplet dynamics in the three regimes. In this t
 alk\, I will discuss the reasons accounting for poor predictions of liquid
  film dynamics down a vertical fibre. Then\, we solve the Navier-Stokes pr
 oblem and our results show excellent agreements with the experimental data
  by Kliakhandler et al. 
LOCATION:Venue to be confirmed
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