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DTSTART:19700329T010000
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CATEGORIES:Engineering Fluids Group Seminar
SUMMARY:The energetics of moving between statistically ste
 ady states in flows driven by buoyancy and wind - 
 Dr John Craske (Imperial College London)
DTSTART;TZID=Europe/London:20190531T130000
DTEND;TZID=Europe/London:20190531T140000
UID:TALK123199AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/123199
DESCRIPTION:Flows in confined spaces that are driven by intern
 al buoyancy and\nexternal wind can possess multipl
 e steady states. In this talk we\nwill discuss the
  robustness of such systems by quantifying their\n
 propensity to switch between steady states when th
 ey are subjected\nto temporal changes in the wind.
  The specific case we consider is\nflow in an `emp
 tying filling box'\, consisting of a single volume
 \nwith high- and low-level openings\, driven by an
  isolated internal\nsource of buoyancy and an oppo
 sing wind. By considering the\nsystem's energetics
  and phase space\, we explain why the\nventilation
  of the resulting stratified system is less suscep
 tible\nto being permanently reversed by the wind t
 han the ventilation of\na space with uniform buoya
 ncy.
LOCATION:JDB Seminar Room\, CUED
CONTACT:Amélie Lamarquette
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