Access actual grid data from fluid sim?

Hey there folks,

I need to access the fluid velocity field for something I have in mind – that is, the per-grid cell velocity. Is there anyway to do that? It looks like all you can bake out are the per frame fluid surface.

I’ve hacked a bit on the blender code, so in a pinch I can just code up some custom export code, but it would be greatly preferable if there is someway to access that data without going there.

Any and all advice enormously appreciated.