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DTSTART:20160327T030000
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DTSTART:20161030T020000
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DTSTAMP:20260429T142346Z
UID:55488772a3493947083254@ist.ac.at
DTSTART:20160530T124500
DTEND:20160530T134500
DESCRIPTION:Speaker: Peter Schröder\nAbstract: Beautiful fluid flow phenom
 ena are all around us. An example are the beautiful shapes formed by smoke
  rising from an incense stick or smoke rings leapfrogging one another. Muc
 h of the visual complexity of such phenomena is due to vorticity\, the loc
 al rotation of fluid particles.\nGetting vorticity right in numerical simu
 lations of flows is very challenging and many methods have been proposed t
 o ameliorate associated numerical problems. In this talk I will introduce 
 an entirely new way of representing the velocity field of an incompressibl
 e fluid with the aid of a two component wave function\, rather than\, say\
 , a three component vector. This wave function is augmented with an incomp
 ressibility constraint and evolves subject to the Schrödinger equation. T
 he numerical algorithms for time evolution of the fluid are exceedingly si
 mple and exhibit extraordinarily faithful vorticity evolution. I will disc
 uss the basic ideas\, implementation\, and show benchmark simulations incl
 uding some comparisons with real fluid experiments. I will also throw in a
  small segment on the deeper structures underlying this approach with fasc
 inating connections to superfluids\, Landau-Lifshitz evolution\, and Clebs
 ch variables.
LOCATION:Raiffeisen Lecture Hall\, Central Building\, ISTA
ORGANIZER:aeller@ist.ac.at
SUMMARY:Peter Schröder: The Institute Colloquium: Schrödinger's smoke
URL:https://talks-calendar.ista.ac.at/events/568
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