Simulate a fan inside a larger domain
 

Hello,
Is it possible to create an inside boundary in fluent in order to simulate a fan behind a radiator in a car for example. I would like to set a flow rate to a small zone of my domain, can it be done?
Thx for your help.

Greg

Hi,
yes, it can be done with implementation of fixed values in FLUENT, here you can set conditions on special cells like their velocities, in other words you can set volume conditions!

If you are not focusing on details of the flow near the fan itself, but the bulk flow, the 'fan' model is pertinent.

Thx for your help. I will try first by setting a constant velocity to part of the domain because I don't really have the data to set the jump in pressure asked for the fan condition.

have you thought whether momentum source can be used in this case..?

No not really but setting a velocity to the fan zone works pretty well and for my use it is more than enough.

Hello!

dear gregoire, do you find any solution for your case? I have the same problem.
how do you set a velocity to the fan zone?
thanks.

Hello Asal,
As I explain before I set a velocity to part of the volume. It has been a while but I think I created a surface in the CAD model which gave me the possibility to set velocity conditions on that surface in fluent.
The trick is to be able to have cells which follow your conditions.
Hope it helps.

Gregoire

Hello and thanks for your reply.

But then you need the flow properties in that area such as temperature and so on.
how you find the flow properties in that surface?

see here please:
http://www.cfd-online.com/Forums/flu...de-domain.html