Can ROMS handle weir crest overflow and dam discharge (both freshwater into saltwater)?

[stevenmiguelfigueroa]

Hello,

I am thinking about tidal weirs on estuaries and tidal channels. Basically a freshwater channel overflows a wall into another oceanic channel of a certain depth. Now I am wondering, how deep does the oceanic channel have to be for stratification to occur for a given ocean tidal range. Is this kind of engineering question possible to investigate in ROMS? I am guessing that splashing isn’t allowed in ROMS? Or if it is, the time step must be really small? Is there any way to get around this (slow overflow speed)?

A similar question is discharge of freshwater into saltwater by a gate opening from the bottom. Different from my main question above, this is possible to explore the response to different opening amounts and durations, right?

Thank you.

[kate]

This ROMS is fundamentally a hydrostatic model. There are other models which include the non-hydrostatic effects of "not small" vertical accelerations. MITgcm is the one I hear most about.