Complicating factors in hydraulic jumps: the effects of earth's rotation
Abstract
Hydraulic jumps at the interface of stratified rotating fluids are studied. The flow is de- fined with continuous density and velocity profiles, with the velocity in each layer changing (upstream shear). The study is conducted in jumps defined by an imposed velocity transition, and jumps developing over a topography.
The numerical simulations conducted showed the qualitative structure of the flow changing in the cross-width direction, as well as the size and amount of turbulence of the jumps. Mixing in these jumps was shown to increase towards the side of the domain where the jumps were larger and more turbulent. The qualitative structure of the flow remained unchanged in the cases with topography. The amount of mixing was also shown to decrease as rotation values increase. In the simulations with topography, the size of the jumps and the amount of mixing were shown to depend on upstream shear developing over the topography.