Turbulence in stratified fluids
Stratification, the layering of fluid by density, affects turbulence in several ways and on multiple scales. Every single fluid element wants to return to the height of neutral buoyancy, but it is not simple to do in turbulent cases. Turbulence that mixes fluids can feel a positive or a negative feedback from stratification and this leads to very peculiar effects.
We study mixing of fluids by turbulence in stratified environments, either in isolated regions such a turbulent patch above, or in layers, as in the work of Marco Boetti and previously of Dr. Lilly Verso.