Jump to content
yeteatime

FLIP SIM - How to stop bubbling

Recommended Posts

Hi! Houdini beginner here.

I'm learning FLIP sim and having trouble with it "bubbling" at the end. It's a water-filled glass breaking (bubbling_question.mp4). Towards the end, the liquid is constantly moving and is creating this "bubbling" look. I've tried adding a POP Speed Limit after certain frame, or setting POP Velocity to 0 after certain frame, but nothing seems to work.

How can I fix this? (I attached the hip file but I'm not sure if it'll work due to missing geos and caches: bubbling_question.hipnc)

Thank you!

-Y

Share this post


Link to post
Share on other sites

Hi, did you meant those "flickering holes" showing up when water is flattened and sliding against the table? I hope there's better solution, otherwise you'll have to go much higher resolution. The meshing method is based on mainly pscale and distance among reseeded particles.. when two particles' distance is on the threshold, it's easy for the meshing between them disconnect and connect again, hence the flickering. You'll need to lower the particle separation in your sim. 

 

  • Like 1

Share this post


Link to post
Share on other sites

That is from an insufficiently high enough resolution. Crank that sucker, maybe even to 0.01 or lower. You'll want to use friction and bounce (on the solver) too. I'm a fan of a little bit of viscosity too, like just 1. Also in your solver, the volume motion > surface tension would be good to turn on too.

Turn on and play with filtering in the surfacer.

  • Like 1

Share this post


Link to post
Share on other sites

Ahh I guess that's what I get for trying to get away with low res sims T.T RIP my computer LOL

Thank you guys so much for your explanation and suggestion!

-Y

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×