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TZID:Europe/Paris
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BEGIN:VEVENT
UID:1-523@lptms.universite-paris-saclay.fr
DTSTART:20170608T140000Z
DTEND:20170608T140000Z
DTSTAMP:20170602T113940Z
URL:https://www.lptms.universite-paris-saclay.fr/seminars/seminaire-fast-l
 ptms-mark-hoefer/
SUMMARY:Séminaire FAST-LPTMS: Mark Hoefer - LPTMS\, salle 201\, 2ème éta
 ge\, Bât 100\, Campus d'Orsay - 8 Juin 17 14:00
DESCRIPTION:The hydraulic analogy to superfluid-like dispersive hydrodynami
 cs\nMark Hoefer (Department of Applied Mathematics\, University of Colorad
 o\,  Boulder\, USA)\nThe classic "hydraulic analogy" between supercritica
 l shallow water flows and gas dynamics was leveraged in the early to mid 2
 0th century as a means to model the flow patterns around wings with a rela
 tively simple water table. But this analogy breaks down when water wave di
 spersion is strong relative to dissipative effects as in oscillatory\, und
 ular bores. In this regime\, the more appropriate analogy is to dispersive
  hydrodynamic media such as superfluids and nonlinear optical diffractive 
 or dispersive patterns\, where dispersive shock waves (DSWs)\, also called
  quantum and optical shock waves\, have been observed. In this talk\, the 
 problem of steady pattern formation in supercritical\, shallow water flows
  will be examined theoretically and experimentally. Two new\, non-classica
 l types of oscillatory DSWs will be identified within the context of the f
 ifth order Kawahara equation resulting from a balance between capillarity 
 and gravity at water depths on the order of 0.5 cm. Experiments with a sha
 llow water table demonstrate their physical existence and properties. The 
 results presented have implications for dispersive hydrodynamic media with
  non-convex linear dispersion curvature such as ultracold atomic superflui
 ds and nonlinear fiber optics.\n\nVoir l'annonce du FAST: https://semmeca.
 limsi.fr/affiche/res17_15.html\n************************* ATTENTION ******
 ********************** \nl'exposé est donné au FAST : accès\, cf. http
 ://www.fast.u-psud.fr/fr/plan\n ******************************************
 ************************
CATEGORIES:seminars
LOCATION:LPTMS\, salle 201\, 2ème étage\, Bât 100\, Campus d'Orsay\, 15 
 Rue Georges Clemenceau\, Orsay\, 91405\, France
GEO:48.698185;2.181768
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=15 Rue Georges Clemenceau\,
  Orsay\, 91405\, France;X-APPLE-RADIUS=100;X-TITLE=LPTMS\, salle 201\, 2è
 me étage\, Bât 100\, Campus d'Orsay:geo:48.698185,2.181768
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