Wouter Bos
Grid turbulence near the grid
Lundi 1er avril 2019, 13h15, ECL salle de réunion I11 bas.
In grid turbulence, not so far behind the grid, an average flow can be observed with a close to sinusoidal velocity profile, corresponding to the wakes behind the grid bars. The kinetic energy of (...)
Emmanuel Leveque
Méthode Boltzmann sur réseau pour la MHD
Lundi 8 avril 2019, 13h15, INSA, bât. Jacquard, salle de réunion LMFA
La méthode Boltzmann sur réseau régit la dynamique d’un fluide à un niveau mésoscopique intermédiaire entre le microscopique et le macroscopique. La capture du comportement de particules distribuées (...)
Bruno Saint Denis
Observations and simulations of internal solitary wavetrains generated by frontally forced intrusions
Lundi 15 avril 2019, 13h15, ECL, salle de réunion I11 bas.
The intrusion resulting from a frontal collision of two stratified water masses has been described in the last few years as a potential source of generation of internal solitary wavetrains (ISW). (...)
Daniel Henry
Convection sous vibration haute fréquence
Lundi 29 avril, 13h15, salle de réunion I11 haut, ECL
Thermal convection induced simultaneously by horizontal temperature gradient and vibration in a rectangular cavity filled with molten silicon is investigated numerically and theoretically. The (...)
Louis Gostiaux
Mixing efficiency in stratified turbulence
Lundi 6 mai 2019, 13h15, Bât Jacquard 1er étage, salle de réunion, INSA.
In 1850, the historical experiment of Joule on the "mechanical equivalent of heat" quantified the turbulent transfer of turbulent kinetic energy into heat in a closed water tank. So far, the (...)
Christophe Corre
Présentation du logiciel libre de simulation d’écoulement SU2
Lundi 13 mai 2019, 13h15, salle de réunion I11 bas.
SU2 est un code libre (LGPL 2.1) de simulation numérique d’écoulements développé depuis le début des années 2010, initialement au sein du département d’Aéronautique de l’Université de Stanford et (...)
Valery Botton
En route pour le chaos avec l’acoustic streaming
Lundi 20 mai, 13h15, salle de réunion I11 bas, ECL
We consider the unsteady regimes of an acoustically driven jet that forces a recirculating flow through successive reflections on the walls of a square cavity. The specific questions addressed (...)
Manikandan Mathur, IIT Madras
Local instabilities in internal waves
Lundi 27 mai, 13h15, UCBL, salle de réunion 2ème étage
We study the evolution of three-dimensional (3-D), small-scale, small-amplitude perturbations on a plane internal gravity wave using the local stability approach. The plane internal wave is (...)
Sébastien Aumaître, CEA, SPHYNX\SPEC
Probing dissipative processes in stationary out-of-equilibrium systems through the fluctuations of injected power
Lundi 3 juin 2019, 13h15, Salle de réunion I11 bas, ECL
In this presentation a tool to study all kinds out—of—equilibrium systems in a stationary state. These systems can be systems in contact with a thermostat pushed out—of—equilibrium or athermal (...)