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March 9, 2021, 16:41 |
Modeling Internal Fan
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#1 |
New Member
Thamer Hussein
Join Date: Mar 2015
Posts: 3
Rep Power: 11 |
I have a simple non-ventilated enclosure where inside this closed box (the fluid domain) there is fan which is used to circulate the air to cool an object generating heat. But since the fan is pulling the air from inside this box it doesn’t make sense that I define the temperature of the inlet & opening of the fan in the boundary condition since that temperature is dependent on the solution (air temperature inside the enclosure).
I was wondering if there is a tutorial available that covers solution dependent expressions for fan cooling simulation. Or a way of coupling the inlet temperature to the air temperature from the solution. Here’s a brief description of my model:
Thanks, Thamer |
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March 9, 2021, 18:04 |
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#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,869
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You are not modelling this a good way. The best way to model the fan is to use a momentum source term. That way the heat is automatically taken care of, and all you do is use the source term to apply the amount of momentum to the fluid to represent the fan.
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Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum. |
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March 9, 2021, 18:16 |
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#3 |
New Member
Thamer Hussein
Join Date: Mar 2015
Posts: 3
Rep Power: 11 |
Ah, I see. I will try what you suggested. Thanks for replying ghorrocks.
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March 9, 2021, 19:02 |
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#4 |
New Member
Thamer Hussein
Join Date: Mar 2015
Posts: 3
Rep Power: 11 |
For anyone who is interested in learning how to model a fan using momentum source term and fan curve I found this video very helpful.
https://www.youtube.com/watch?v=Q-mMbt_3CCc |
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March 9, 2021, 23:33 |
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#5 | |
Senior Member
Kira
Join Date: Nov 2020
Location: Canada
Posts: 435
Rep Power: 9 |
Quote:
Thanks for this addition! |
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Tags |
ansys 19.2, cfx, closed system, fan, internal fan |
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