[mjkey]

Hey everyone,

I'm modelling the interior airflow of a vehicle cabin. I've attached a picture for people to see what's happenin.

So the screenshot I have is the pathlines from my inlet and they flow to my outlet. I wanted to know what the main difference was betweeen pathlines and particle tracking?

In addition, I wanted to know if it was possible to somehow find out the time the pathline (or particles, in my case "air") takes to reach the outlet. This is a natural ventilation system so I would like to know how long it takes for the "old" air to exit the car cabin.

Cheers!

[pakk]

To answer the first part of your question, assuming it is steady state, the simplified explanation is as follows:

Pathlines = paths that a particle with zero mass would take if it would be released in your flow.
Particle tracking = paths that a particle with non-zero mass would take if it would be released in your flow.

[ghost82]

Second answer could be color the pathline by residence time instead of velocity (?)

[mjkey]

Originally Posted by pakk

To answer the first part of your question, assuming it is steady state, the simplified explanation is as follows:

Pathlines = paths that a particle with zero mass would take if it would be released in your flow.
Particle tracking = paths that a particle with non-zero mass would take if it would be released in your flow.

hi Pakk,

Thanks for the response. I've been running it as a transient case and reaching convergence for my monitors (velocity and mass flow rates). However, i didn't know about particle tracking until after i ran my simulation. Any advice, should i be looking at pathlines or trying to get particle tracks?

Cheers!

[mjkey]

Originally Posted by ghost82

Second answer could be color the pathline by residence time instead of velocity (?)

hi ghost thx for the reply!

Exactly what I needed.

Cheers!!