Pushing flip fluid up through a hole

Forums Technical Discussion Pushing flip fluid up through a hole

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blaabjerg: Member; 4 posts; Joined: 5月 2017; Offline

2023年5月26日 6:32

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)


Tanto: Member; 393 posts; Joined: 11月 2016; Offline

2023年5月26日 13:48

Hello, this should work:

Attachments:
pushWaterOut.hipnc (664.8 KB)


blaabjerg: Member; 4 posts; Joined: 5月 2017; Offline

2023年5月30日 2:53

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 - 2023年5月30日 02:53:41


Tanto: Member; 393 posts; Joined: 11月 2016; Offline

2023年5月31日 10:59

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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