Blender fluid test with flip fluids addon. bottom fill and top fill
A flip fluids test I did comparing top fill vs bottom fill. Ran into some trouble early on by leaving the inflow at the bottom of the obstacle it wouldn't actually fill. As it turns out the inflow works by generating new particles only when there are none near it. So the way i solved this was by animating the inflow to slowly go up following the water line. I would have liked more turbulence at the water line but knowing i could do it this way was enough for now. At the end of the video i included a normal top fill animation which came out pretty good. Would have liked the 'A' to fill a little faster but i think reducing the size of the inflow but increasing the emissions would correct this. I have included the final blend file if you wish to look over my work. You will need to have the flip fluids addon for my blend file to be able to bake/ render. Otherwise blender will probably throw you an error.
https://mega.nz/#!79B3TSgB!qdJNSmoU9K...
https://drive.google.com/open?id=1sr_...
Flip fluids plugin info:
https://github.com/rlguy/Blender-FLIP...
Blender info:
https://www.blender.org/
Side note video was exported and uploaded as h.265