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July 27, 2019, 17:04 |
Thermal boundaray conditions
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#1 |
New Member
Edwin P
Join Date: Jun 2018
Posts: 13
Rep Power: 8 |
Hello,
I have a long duct opened at atmospheric pressure. I want to model a small section near to the end of the duct which generates heat. I have transient measurements of temperature at the beginning and at the end of the that section. At time t=0, all the system is at ambient temperature. Should I use both the inlet and oultlet temperature measurements of my sections as a boundary conditions in Ansys Fluent? Help me please, Regards Last edited by intied; July 27, 2019 at 17:05. Reason: typo error |
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July 29, 2019, 01:48 |
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#2 |
Senior Member
Alexander
Join Date: Apr 2013
Posts: 2,363
Rep Power: 34 |
from my point of view it depends on the goal of your simulation.
Make a decision -> what you want to simulate, then put boundary conditions best regards |
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July 29, 2019, 02:52 |
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#3 |
Senior Member
Svetlana Tkachenko
Join Date: Oct 2013
Location: Australia, Sydney
Posts: 416
Rep Power: 15 |
Why is the temperature transient? Is this an externally imposed boundary condition in the experiment?
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July 29, 2019, 11:53 |
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#4 | |
New Member
Edwin P
Join Date: Jun 2018
Posts: 13
Rep Power: 8 |
Quote:
The temperature increase inside the duct is due to a solid with internal heat generation. I added a source term and I want to model its transient temperature profile |
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July 29, 2019, 13:01 |
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#5 |
Senior Member
Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,758
Rep Power: 66 |
You can't impose an outlet temperature, not that you would need to, anyway. You would just use pressure outlet or outflow BC or something.
Just make sure you have the right inlet conditions and whatever else you need for your simulation. I can't follow what you want to do with heat generation and an inlet temperature. |
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July 29, 2019, 16:18 |
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#6 | |
New Member
Edwin P
Join Date: Jun 2018
Posts: 13
Rep Power: 8 |
Quote:
Thank you. In fact, I am using pressure inlet and pressure outlet as boundary conditions. But, I am not sure if I have to use the transient temperature profile in the "Thermal" tab of those boundary conditions. By other hand, I have a small solid which generates heat. I want to model its transient temperature. |
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July 29, 2019, 19:25 |
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#7 |
New Member
Edwin P
Join Date: Jun 2018
Posts: 13
Rep Power: 8 |
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Tags |
boundary conditions, temperature |
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