Help Turbulence visualization

[popuz]

Hi all.

I would like to use ObiFluid to visualize turbulence flow in 3d. I think to colorize particles which are in turbulence. So how can I understand it? Which parameter of the particle should I check? something like angular velocity or what?

[josemendez]

Hi all.

I would like to use ObiFluid to visualize turbulence flow in 3d. I think to colorize particles which are in turbulence. So how can I understand it? Which parameter of the particle should I check? something like angular velocity or what?

Fluid does not have angular velocity, it has "vorticity" . That's the value you want to be checking.

Vorticity is a 3D vector in the direction of the curl of the velocity field at the particle's location. Its magnitude is proportional to the rotation speed. Take a look at ObiFoamGenerator.cs script for an example of a script that reads vorticity values: it generates diffuse particles at locations where density is low and vorticity is high.

[popuz]

Fluid does not have angular velocity, it has "vorticity" . That's the value you want to be checking.

Vorticity is a 3D vector in the direction of the curl of the velocity field at the particle's location. Its magnitude is proportional to the rotation speed. Take a look at ObiFoamGenerator.cs script for an example of a script that reads vorticity values: it generates diffuse particles at locations where density is low and vorticity is high.

Cool. Thank you