Looking for Particle residence time

[chien_fu]

I have some very slow moving particles at a particular point in my analysis.  I'm looking to determine the total amount of time that it takes them to get from the inlet to the oulet of the system.  Is there a way determine the amount of time it takes one particle to travel through the system?  Alternatively, is there a way to plot the velocity of a particle over its parametric distance of travel through the system?

Also, is there a way to determine which particles are completely stagnant?

Thank you.

[marco.mueller]

I guess you are looking for this?

the selected one(s) get highlighted white.

[chien_fu]

Yes partially, thank you.

What does it mean when a particle trace terminates in the middle of the model?  Does that mean it becomes completely stagnant in equilibrium?

[Royce_adsk · Accepted solution]

Another possibility that you could look at is Local Mean Age or (LMA)

This would give you an idea of how long it would take for fluid to exit the model from a certain area in your model.  If you look at the LMA value at the inlet that would tell you how long it takes the fluid at the inlet to exit the model.  This can be very useful for finding stagnent regions in your model and is used very often in the AEC industry.

[chien_fu]

Thanks.

I'm re running now with this quantity included.

[andreas_kramer]

Can you somehow read out the local mean age for a volume (like mean local mean age...)?

A way would be to manually save lma table data for a set of planes, but that's too time consuming.