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+--- Thread: Help Turbulence visualization (/thread-1530.html)
Turbulence visualization - popuz - 01-12-2019
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?
RE: Turbulence visualization - josemendez - 01-12-2019
(01-12-2019, 10:36 AM)popuz Wrote: 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.
RE: Turbulence visualization - popuz - 03-12-2019
(01-12-2019, 06:58 PM)josemendez Wrote: Fluid does not have angular velocity, it has "vorticity"
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