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Simulate a fan inside a larger domain

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Old   April 4, 2011, 11:55
Default Simulate a fan inside a larger domain
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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
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Old   April 4, 2011, 16:19
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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!
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Old   April 4, 2011, 17:00
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Quote:
Originally Posted by gregoire View Post
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.
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Old   April 5, 2011, 10:53
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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.
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Old   April 6, 2011, 00:58
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have you thought whether momentum source can be used in this case..?
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Old   April 6, 2011, 02:45
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No not really but setting a velocity to the fan zone works pretty well and for my use it is more than enough.
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Old   June 21, 2013, 10:10
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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.
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Old   June 21, 2013, 11:42
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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
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Old   June 21, 2013, 12:04
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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:
How to simulate a fan inside a domain
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domain decomposition, fan, flow rate, inside boundary

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