Forums Technical Discussion Viscous fluids and collisions

Viscous fluids and collisions

   3431   7   1
User Avatar
AndyW
Member
343 posts
Joined: Dec. 2014
Online
 
I'm having issues with viscous fluids not handling concave collision geometry. Imagine a flat tray shape, non viscose fluids fill the tray correctly but the moment I turn on viscosity I'm colliding with the bounding box with a slight bulge into the negative space. Ideas?
 Report
User Avatar
circusmonkey
Member
2624 posts
Joined: Aug. 2006
Offline
 
Have you set up your scene manually or via the shelf tools.

Rob
Gone fishing
 Report
User Avatar
AndyW
Member
343 posts
Joined: Dec. 2014
Online
 
I tried it both ways, same results
 Report
User Avatar
circusmonkey
Member
2624 posts
Joined: Aug. 2006
Offline
 
Hi See attached everything working . centos h15,5,565

Rob

Attachments:
ex_flip_viscosity_concave_v001.hip (1.9 MB)

Gone fishing
 Report
User Avatar
circusmonkey
Member
2624 posts
Joined: Aug. 2006
Offline
 
Post up your scene file if you want

Rob
Gone fishing
 Report
User Avatar
AndyW
Member
343 posts
Joined: Dec. 2014
Online
 
I'm taking a look at your file, here's the issue I'm having in the attached file

Attachments:
viscocityCollisionIssues.hip (2.0 MB)

 Report
User Avatar
circusmonkey
Member
2624 posts
Joined: Aug. 2006
Offline
 
Ive had a quick tidy up and all works as expected. Scene noted in green. The main clean was with your collision geometry vdb creation. The exterior / interior voxel banding of 1 is simply not enough to calculate the collision correctly especially when its tied to the particle separation value.

Attachments:
viscocityCollisionIssues_fixed.hip (2.0 MB)

Gone fishing
 Report
User Avatar
AndyW
Member
343 posts
Joined: Dec. 2014
Online
 
Got it, a thousand thanks!
 Report
  • Quick Links