Learning Forum

[pmeghana]

I have been working on tracking particles in a closed room with a rotating fan. for the fan, i have two zones, one the room, and a cylinder enclosing the fan geometry. this cylinder is applied with the sliding mesh method for the momentum source. but the walls of the cylinder need to let particles through them in order for the particles to get hit by the fan.

I want to see where the particles are being collected, and for this, i am using trap condition for the walls of the room and the fan. I am not able to find any condition for the cylinder wall to pass the particle through it.

[Rob]

If the wall is labelled "wall:42" or the like it's part of the non-conformal interface boundary and is only used if the interface doesn't completely match. It shouldn't do anything to the particles or flow if everything is set up correctly.

[pmeghana]

Yes, i have walls named like that.
the flow doesn't seem to have been affected but, what do you mean when you say, is set up correctly? What would be the possible thing i would set up wrong if this is the case? The default dpm boundary condition i get for these walls is reflect.

[Rob]

Assuming the interface is set up and passing flow the particles should also pass through it. Are you seeing them getting stuck?

[pmeghana]

the default is reflect set to the walls. There is nothing visible as to the particles hitting the interface. would fluent show if the particles reflect?
i need to track if the particles hit the fan walls inside this rotating cyclinder domain.

[Amine Ben Hadj Ali]

You are using trap condition at the wall and this face should be there if you print a dpm summary. Moreover you can visualize the accretion rate of the trapped particles at that wall.