Shear-driven Mixing —Tom Eaves (Dundee)

A snapshot of a three-layer, stably stratified density field undergoing mixing in a shear flow. An instability in three-layer stratified shear flow arises when interfacial gravity waves are doppler-shifted by the shear, and resonate. At this wavelength, the resulting nonlinear dynamics show regions of intense mixing alongside more quiescent dynamics.

https://fluids.ac.uk/files/04_Tom_Eaves_shear-driven_mixing.1620743955.png