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SUMMARY:Fluid mixing in ideal systems and large--scale oceans - Nairita Pa
 l (Indian Institute of Technology Kharagpur)
DTSTART:20240604T103000Z
DTEND:20240604T113000Z
UID:TALK217561@talks.cam.ac.uk
DESCRIPTION:Turbulent mixing and phase-separation of two or more fluids is
  an important physical process that has wide-ranging applications\, includ
 ing natural phenomena (ocean mixing) as well as in various small--scale hu
 man technologies. Fluid mixing is a multiscale process\, in which mass and
  momentum exchange takes place in a highly nonlinear fashion in space and 
 time. In the first half of this talk\, I shall describe my research on tur
 bulent phase-separation in multiphase fluid systems\, using a time-depende
 nt Ginzburg Landau formulation. I will show how a mathematical study of mu
 ltiphase systems using the Ginzburg Landau method uncovers universal featu
 res of two-fluid mixing and phase separation.\nIn the second half of my ta
 lk\, I will describe an analytical moment closure model of the turbulent e
 nergy fluctuations in a multiphase system. The analytical&nbsp\;turbulence
  model bridges the gap between theory and numerics of fluid mixing\, and d
 escribes important phenomena such as transition to turbulence.\nLastly\, I
  will shed some light on my future research as to how the use of analytica
 l models\, numerical simulations and recently developed data--driven techn
 iques will help to uncover new physics for important real--world applicati
 ons.\n&nbsp\;
LOCATION:Seminar Room 2\, Newton Institute
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