Here’s an image I did for the 2007 wall calendar of our advertising agency. It’s going to be printed and given to our customers. The assignment was “do anything you want”. I’ve never done anything with fluids so…
Rendered with Yafray GI + one photon lamp inside the glass. Fluid sim was composited together with the letter R in photoshop. Also color corrected (of course) and the light tubes inside the letters were added in photoshop. Original render size is for print… something like 3500 pixels wide. It took me 10 hours to make.
Edit: Here’s a hi-res version (1600x1200) which is nicely suitable for desktop wallpaper.