Forums Technical Discussion Pushing flip fluid up through a hole

Pushing flip fluid up through a hole

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blaabjerg
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Hi guys,

I was trying to do what seems like a very basic thing, but failed miserably at it.

I have a scene with flip fluid in a hole, and I am translating a cube collider up from the bottom, to push the water out of the hole.

What happens though, is that the water just compresses and the water is not pushed out.

I would be super happy to know what I am doing wrong, is there a setting that I am missing?

I attatched the hipnc file and a screenshot.

Bjørn

Attachments:
Skærmbillede 2023-05-26 kl. 12.17.32.png (1.7 MB)
pushWaterOut.hipnc (660.5 KB)

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Tanto
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Hello, this should work:

Attachments:
pushWaterOut.hipnc (664.8 KB)

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blaabjerg
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Tanto
Hello, this should work:
Amazing, it works!

So you just added a trail before the collider and set it to compute velocity to get it to work?

Was it missing the directional velocity from the collider?

Bjorn
Edited by blaabjerg - May 30, 2023 02:53:41
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Tanto
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No, what made it work was just using the model rather than the vdb as a collider. But if you used a vdb you would need a velocity field, as there is no way for the solver to understand its animation otherwise.
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