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Velocity in volumes inside FLIP fluids


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Hi,

I cannot understand where these velocities are coming from.

I am trying to rise a sub from the water and I am doing some research.
I tried to simplify the scene and I found out that I have some velocities in a part of the volume that, in my opinion, does not have "full" voxels

Please see the attached image and hip file.

I am using a static object with volume proxy as a collision volume.

If I remove the viscosity attribute of the FLIP fluid, the velocity decreases dramatically..

Where I am mistaking? In my opinion, the "red" velocities should be only where the volume has the "full" voxels and not in the whole volume... I apologise for my ignorance but I am still learning :D

Thank you guys!
Cheers!
Andrea

sub_odforce.hip

2016-05-21_195632.png

Edited by lazza79
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