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-   -   Simulate a fan inside a larger domain (http://www.cfd-online.com/Forums/fluent/86859-simulate-fan-inside-larger-domain.html)

 gregoire April 4, 2011 11:55

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?

Greg

 Amir April 4, 2011 16:19

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!

 xrs333 April 4, 2011 17:00

Quote:
 Originally Posted by gregoire (Post 302165) 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
If you are not focusing on details of the flow near the fan itself, but the bulk flow, the 'fan' model is pertinent.

 gregoire April 5, 2011 10:53

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.

 Sushilkumar April 6, 2011 00:58

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

 gregoire April 6, 2011 02:45

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

 asal June 21, 2013 10:10

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.

 gregoire June 21, 2013 11:42

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

 asal June 21, 2013 12:04

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?

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