Jump to content
cristiandrade

Flip Fluid odd behavior

Recommended Posts

Hi there!

I'm learning Flip Fluids with Houdini Apprentice 16 and I did a simple test. It' just an animated character (from Mixamo) rolling over the water. But oddly the fluid start behaving in a strange way, both in the direction of the fluid and velocity, in slow motion, almost anti-gravitational way. Someone may know what could be causing this? Using only shelf tools.

 

Thanks!

 

 

roll.mp4

roll_water.hipnc

Share this post


Link to post
Share on other sites

Seems like scene scale issue. Your character is around 100 meters high. So your waves are extremely big and therefor it seems like they move in slow-motion.

  • Like 1

Share this post


Link to post
Share on other sites
Posted (edited)

Thanks ThomasPara and lukeiamyourfather. You're right. I didn't realize that the character was so big.

I started over the scene with the character scaled down. The Flip tank is much much smaller know. The only problem is that now I get the message "dop cook. Solving: GAS_BuildCollisionMask". It's taking sooo long to simulate now, it's almost freezed in this cooking process. Do you know how to speed that up?

Thanks for your help, I appreciate your assistance.

Edited by cristiandrade

Share this post


Link to post
Share on other sites

In the end I get back to the old setup, with the big scale, and adjusted the gravity, so now the simulation is much more fast. Still trying to fine adjust the liquid behavior, but I think that's working better at a bigger scale. Don't know if is wrong to work this way or to what kind of problems working like this could lead to.

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

×