Most efficient way to sim a large scale environment smoke for phoenix Maya?

[zjie]

Hi guys, I'm new to doing simulation and phoenix fd, right now I have to simulate a slow moving environment smoke and found it is very slow and inefficient when I sim and reduce the opacity after. Is there a better way to do this?

[zjie]

It will be something like this reference

[Svetlin.Nikolov]

Hey,

Give the new Precise Tracing method for slowing down simulation a try - you can simulate a faster sim and then retime it using this method - I think for smoke this would work out pretty well: https://docs.chaosgroup.com/display/...Input-FrmBlend

Cheers!

[zjie]

Hey Svetlin, my Frame Blending option only has Interpolation, velocity and innervelocity, I am using version 3.05.00, is the new precise tracing method on the latest nightly build?

[zjie]

I installed the latest nightly build and it works! But what if its a simulation with a moving object collision, I will have to use the Resimulate function?

[Svetlin.Nikolov]

Mmm, yup - you could resimulate using time-bend resimulation but this might take nearly as long as just running a slow regular sim. Alternatively, you could speed up all the scene objects while running the original sim and then slow the Input play speed, but if the smoke is thick around the moving objects, then some gaps might be visible.