For my last post of the sabbatical I thought I'd share a simplicial fluid solver I implemented using Houdini's new linear solver. Based off the paper: "Stable, Circulation-Preserving, Simplicial Fluids" Hip file here:

Shout out @RyusukeSugimoto for adding this tool to H. They were also kind enough to include a few demo files that I posted on the beta forums for this tool, into Houdini. Definitely check those out if you want to learn more about the linear solver node!

Insanely cool.. I opened the file and yeah, don´t understand a thing ! 😅 but cool copyright

This is extremely cool! Thanks for calling attention to the paper too, very interesting. Is your version on tets or on the surface?

Mine is all surface based. If you wanted to extend this tets it'd probably make sense to actually build out the DEC operators in matrix form, for convenience. I didn't because I'm lazy and doing large mat mul ops is still a bit obtuse in houdini...

Some folks go snowboarding. Others read books. Hold on, lemme check… nope, nobody anywhere in 17 years of Facebook has posted a selfie while coding up a simplicial fluid solver.

Very cool

This is to freeking cool! Nice wrok!

Woah, always wanted something like this! Any dependencies/reqs to have installed for it to work? H20 only etc?

Just Houdini 20 :) you could backport this to Houdini 19 or earlier if you're comfortable with scipy, as a replacement for the linear solver sop

🙌🙌🙌 thanks for sharing. I will try to understand 🤣