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Fluid didn´t collision with Static Object

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Willms
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Joined: 4月 2019
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Hi, I have got a problem with a simulation.

I made a sphere that emits particles from it, very simple, but when I put a Static Object in my scene, these particles don´t collide with the object.

I attached here an image of this problem.

I use Houdini 19.0.657

Image Not Found
Edited by Willms - 2022年6月25日 12:08:19

Attachments:
test.PNG (43.3 KB)
Viewport.PNG (1.9 MB)
simulation.PNG (35.0 KB)

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Enivob
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2660 posts
Joined: 6月 2008
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The merge evaluates left-to-right. Rewire your inputs so the Static Object is on the left.
Using Houdini Indie 20.5
Windows 11 64GB Ryzen 16 core.
nVidia 3060RTX 12BG RAM.
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Willms
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8 posts
Joined: 4月 2019
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Hi enivob,
I rewired left-to-right and with a cube (polygon)it works well, but when I changes it for a custom mesh, I have the same problem:



Attachments:
Viewport.PNG (2.7 MB)
test.PNG (38.0 KB)
simulation.PNG (38.8 KB)

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Enivob
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2660 posts
Joined: 6月 2008
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Yeah, you have to learn how to build your collision meshes to be "water-tight". The resoultion of the collision surface is based upon the particle separation value of the flip sim.
On the flipobject, activate the collision guide. This will give you a "true" representation of what your mesh derived collision object actually looks like. Turn off display mesh on the static object.
Edited by Enivob - 2022年6月25日 12:41:38
Using Houdini Indie 20.5
Windows 11 64GB Ryzen 16 core.
nVidia 3060RTX 12BG RAM.
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Willms
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8 posts
Joined: 4月 2019
オフライン
 
Problem resolved

Thank you so much Enivob
Edited by Willms - 2022年6月25日 14:34:40
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