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Performing only convection analysis for a heat sink with a Fin |
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January 3, 2021, 10:32 |
Performing only convection analysis for a heat sink with a Fin
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#1 |
New Member
Karthikeyan Kurinjivanan
Join Date: Jul 2020
Location: Braunschweig, Germany
Posts: 4
Rep Power: 6 |
Hello everyone,
I have been working on a conjugate heat transfer problem for a setup with a constant heat source as the base and cylindrical fins on the top (as shown in the attached image). Now I want to simplify the model to only forced convection and neglect the conduction happening in the fin body so that I can make it Quasi-3D for simplification. I am not sure how I can do that in ANSYS Fluent and hence I would be grateful if anyone could let me know where to start. Thank you very much. Karthik |
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January 4, 2021, 03:43 |
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#2 |
Senior Member
Alexander
Join Date: Apr 2013
Posts: 2,363
Rep Power: 34 |
change all boundary conditions of the fin body from coupled to heat flux, keep default value 0
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January 4, 2021, 13:09 |
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#3 |
New Member
Karthikeyan Kurinjivanan
Join Date: Jul 2020
Location: Braunschweig, Germany
Posts: 4
Rep Power: 6 |
Hello AlexanderZ,
I tried this, but the boundary conditions for the fin body was already the heat flux set to zero. I have another thing I can do. I want to make them uni-thermal fins, by having uniform temperature distribution in each of the fins so that I can make them Quasi-3D. Is this possible? Please find attached images that explain what I have and what I intend to have. Thanks again. |
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January 4, 2021, 15:10 |
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#4 |
Senior Member
Lorenzo Galieti
Join Date: Mar 2018
Posts: 375
Rep Power: 12 |
I am really throwing random suggestion here: what if you increase a lot the heat conductivity of the solid? Iwould blindly try it but I am not sure about it
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January 4, 2021, 17:49 |
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#5 |
New Member
Karthikeyan Kurinjivanan
Join Date: Jul 2020
Location: Braunschweig, Germany
Posts: 4
Rep Power: 6 |
Hey LoGaL,
That could help, but I would not want to do that because I want the results to be comparable to the 3D results. My aim is to just make this Quasi-3D by a few assumptions. Changing the conductivity would be a big change which would not be of any use to me. Thanks for the suggestion though. |
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Tags |
conjugate heat transfer, convection., fluent, quasi-3d |
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