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Fluid-driven Particle Fire


MIguel P

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Thanks for the hip file.

I found it VERY interesting to go through it.

There are at least 3 concepts in it that I haven't seen in the documentation (I might be wrong).

(The source relationship, and the particle velocity vector field, Guide Geometry hack)

BTW, Is this Guide Geometry HACK the proper / official way to do this?

Thanks!

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I'm glad you found it instructive :)

I think the source relationship way of emmiting fluids is in various scenes from the help.

Moving the particles with a vector field with the attributetransfer is a really useful thing. I don't know if the guide geometry method I used for fluids is the best, but the result is a point cloud with velocity vectors, so I think the method is as good as any other if you are caching the field to disk.

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  • 1 month later...

Thanks Miguel this scene is quite useful.

Question however-doing the sim of the fluid seems to be a tad problematic for me.

As 3d (as the scene loads) frame 17 seems to be quite slow to generate.

Making it a 2d Fluid gets further-but it absolutly hung Houdini at frame 71

(this i know - as I left it over the week-end stumped at frame 71).

I am using build 9.0.768-how long does it take you to sim in the latest build?

Not sure if its my setup or if this scene should be considered *heavy* by design (hope not).

-RAL

Edited by rconover
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Thanks Miguel this scene is quite useful.

Question however-doing the sim of the fluid seems to be a tad problematic for me.

As 3d (as the scene loads) frame 17 seems to be quite slow to generate.

Making it a 2d Fluid gets further-but it absolutly hung Houdini at frame 71

(this i know - as I left it over the week-end stumped at frame 71).

I am using build 9.0.768-how long does it take you to sim in the latest build?

Not sure if its my setup or if this scene should be considered *heavy* by design (hope not).

-RAL

Hi, I'm glad you like the scene.

I had no problems with the simulation. I use a previous build, maybe is a new bug?

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Hmm-this may not be working for me (but i`d really like it to).

Can you clarify what you mean here?:

>You will need to write out the vector field and rereading it with the file.

Because this doesn`t seem to be enough in build 9.0.782:

>Or just plug the point1 into the second input of the popnet.

The particles fire are not being driven by the fluid sim yet even if this is true.

Is there something else I need to do the localize the effect on my machine?

-thanks again

ral

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