Laboratoire des Écoulements Géophysiques et Industriels

Nos tutelles

CNRS

Nos partenaires

Rechercher





Accueil > Équipes > Equipe MEIGE : Modélisation, Expériences et Instrumentation pour la Géophysique et l’Environnement > Diffusion scientifique > Séminaires internes

Wall plume in a cavity : an experimental investigation

Tobit Caudwell, 27/11/14

Wall convection produced by hot walls is of great interest to many industrial and environmental applications.
In this experimental-theoretical investigation we consider a turbulent plume generated by an isothermal wall in an enclosure, and the formation of the heat stratification in the interior. The evolution of the plume near the wall and the temperature stratification are measured across a plane, using simultaneous LIF and PIV measurements that allows to give a precise description of the dynamics of the system.
Our detailed results allow us to make detailed comparisons between experiments and several models derived from entrainment plume theory, in the stratified region as well as in the plume itself. Improvements are proposed to increase the accuracy of the theory.