Fluid mixing in stratified gravity currents: the Prandtl mixing length.

@article{Odier2009FluidMI,
  title={Fluid mixing in stratified gravity currents: the Prandtl mixing length.},
  author={Ph Odier and J Chen and Michael K. Rivera and Robert E Ecke},
  journal={Physical review letters},
  year={2009},
  volume={102 13},
  pages={134504}
}
Shear-induced vertical mixing in a stratified flow is a key ingredient of thermohaline circulation. We experimentally determine the vertical flux of momentum and density of a forced gravity current using high-resolution velocity and density measurements. A constant eddy-viscosity model provides a poor description of the physics of mixing, but a Prandtl mixing length model relating momentum and density fluxes to mean velocity and density gradients works well. For the average gradient Richardson… CONTINUE READING