I'm also very interested in this. I have been trying to set up a scene which allows fluid to drip down the sides of an object and then form into droplets on the underside. However, as an absolute beginner in Houdini I'm not sure about how to approach this. It seems that by default liquid does not properly stick to surfaces realistically. Presumably this is because most of Houdini's default settings are intended for larger scale simulations? I have been experimenting with "stick on collision", surface tension and viscosity but can't seem to get a convincing result. I spent a lot of time searching around the internet but haven't had much success in finding relevant content. If any of you more experienced users could shed some light or point us in the right direction it would be highly appreciated!