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January 30, 2010, 22:37 |
Heat Transfer Coefficient
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#1 |
Member
Tiago Macarios
Join Date: Mar 2009
Posts: 35
Rep Power: 17 |
I just installed openFOAM, so sorry if the question sounds stupid, but how do I set a heat transfer coefficient and prescribed heat flux in the laplacian solver?
I have this routine in fluent which I just simulate the solid with standard heat transfer conditions (heat tranfer coefficient, fixed temperature and prescribed heat flux) and I want to try to port it to openFOAM. Later I will need to run a optimizer and it looks like openFOAM can be reasonably faster. Any suggestion? Thanks |
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January 31, 2010, 12:09 |
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#2 |
Member
Eelco Gehring
Join Date: Mar 2009
Posts: 70
Rep Power: 17 |
You can set a fixed heat flux by setting a temperature gradient BC. Look in /0/T
There is a similar procedure for the fixed temperature. type gradient value uniform 8 (the gradient value) type fixedValue value uniform 400 (temperature value) |
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January 31, 2010, 15:22 |
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#3 |
Member
Tiago Macarios
Join Date: Mar 2009
Posts: 35
Rep Power: 17 |
Thank you, but how do I set the heat transfer coefficient? and the reference temperature?
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January 31, 2010, 16:16 |
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#4 |
Member
Eelco Gehring
Join Date: Mar 2009
Posts: 70
Rep Power: 17 |
I don't know an easy way to set that up.
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January 31, 2010, 17:14 |
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#5 |
Member
Tiago Macarios
Join Date: Mar 2009
Posts: 35
Rep Power: 17 |
Thats something unexpected =O
can you give me just give me some start instructions about the hard way? |
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January 31, 2010, 17:44 |
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#6 |
Member
Eelco Gehring
Join Date: Mar 2009
Posts: 70
Rep Power: 17 |
I would say that you have to implement a new boundary condition. I don't think this type of BC exists as of yet. However, I would search the forum thoroughly before doing anything else.
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