workflow for multiple resimulations

[mark_aldred]

What is the exact workflow for resimulating multiple times?

I simulated, resimulated, then changed the Resimulation "Output and Render Path" to a different folder so that the first resimulation files wouldn't be overwritten. If I resimulate then, the result is exactly the same as the first resimulation, I expect because it's the original simulation cache files that are still being referenced. But if I then change the "Base Cache Files Path" to point to the first resimulation files, I get a warning that the Grid Wavelet channel is not found and that interpolation will fail.

What am I doing wrong? And what is the best way to resimulate for more detail?

[slavina.nikolova]

Hey,

There is an option in the Resimulation rollout -> Grid Resimulation tab -> No-Export Grid Channels. The option specifies the channels that are used just for Resimulation and which will not be exported to the Resimulation output cache. The option is set to UVW/Wavelet by default to reduce the cache file size, but in your case you will want to change it to one of the other options according to your needs. For example, None will mean that all channels will be exported to the Resimulation output cache file. Here you can find more info about the Resimulation options - https://docs.chaos.com/display/PHX4M...idResimulation


Hope this helps!

[mark_aldred]

Thanks! That worked.
So I'm doing it correctly by setting the Resimulation "Base Cache Files Path" to the first resimulation files, and the "Output and Render Path" to a different folder so the first simulation files are preserved?

Incidentally, are there any advantages to multiple resimulations over just increasing the Amp. Resolution on the first resimulation? Is it just a way to gradually increase resolution until you get the results you're after?

[mark_aldred]

Bump.
Am I doing it right?

[slavina.nikolova]

Hey,

Yes, your workflow is correct.

The multiple resimulations will give you the chance to increase the Grid Resolution gradually and enhance details, while preserving the shape and behavior of the base simulation. For example, it's possible to add Wavelet Turbulence to increase detail, or simply Amplify the resolution.
Also, you could slow down or speed up the animation, as well as animate the Time Scale using Phoenix's Time Bend controls.
Here you could find more information about the Fire/Smoke Resimuation - https://docs.chaos.com/display/PHX3M...e+Resimulation

Cheers!

[mark_aldred]

Got it.
Thanks for the help.