[jasonneuswanger]

This seems to be by far the most comprehensive open-source CFD system around, but I can't find any examples of a fairly commonplace CFD task: simulating the flow of a river.

I would like to be able to simulate 3D steady state flow in a 100m reach of river based on about 2000 field-surveyed points defining the bathymetry. Is OpenFOAM appropriate for that, and if so can somebody point me to resources involving a similar application? At first glance it doesn't look like the meshing format is very conducive to inputting a 2000-point survey.

I also need to track the density of invertebrates drifting in the river. They need to be able to have positive, negative, or neutral "buoyancy" (depending on behavior). I'm considering two ways to do this: tracking them as individual particles, or tracking their probability density like a plume of ink or something. Is either option possible in OpenFOAM, and if so, what components should I read up on?

Thanks in advance for any advice.