Séminaire de Mécanique d'Orsay
Jeudi 28 avril à 14h au FAST
The Architecture of Random Mixtures
Emmanuel Villermaux
IRPHE, Université d'Aix-Marseille
 

The principles of scalar mixing in randomly stirred media are discussed, aiming at describing the overall concentration distribution of the mixture, its shape, and rate of deformation as the mixture evolves towards uniformity. We emphasize the impact of the individual trajectories of the particles, as well as the interaction rules between the particles, on the mixture evolution and fine structure. The discussion is illustrated by several experiments, both at high, and low Reynolds number; we also suggests a new numerical method for scalar mixing.