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Imposing a temperature inside the domain

Posted Feb 14, 2012, 11:18 a.m. EST Heat Transfer & Phase Change 2 Replies

David Thanoon
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Hello,
I am doing some simple heat transfer simulation: static, no heat source, or radiation only conduction. However I would like to impose a temperature along a curve inside my domain how I can do this?
Thanks
Regards
2 Replies Last Post Feb 14, 2012, 10:57 p.m. EST
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Feb 14, 2012, 2:56 p.m. EST
Hi

I would suggest to cut your (sub)domain into two by an internal boundary and apply a constant T on that boundary (if you can do that on internal boundaries. If not, I suppse you can define an global ODE on that boundary to impose T-YourT=0

--
Good luck
Ivar
Hi I would suggest to cut your (sub)domain into two by an internal boundary and apply a constant T on that boundary (if you can do that on internal boundaries. If not, I suppse you can define an global ODE on that boundary to impose T-YourT=0 -- Good luck Ivar
Nagi Elabbasi Facebook Reality Labs
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Posted: 1 decade ago Feb 14, 2012, 10:57 p.m. EST
If your model is 3D and you want to impose a temperature on a curve/line it can be done but not as straightforward as imposing the temperature on a boundary/surface. You can do it by right clicking on the Heat Transfer node and selecting Edges -> Weak Constraint or Edges -> Pointwise Constraint from the menu. Set the constraint expression to T-Tset which will impose a temperature of Tset on the line/curve. If you don’t see Weak Constraint in the menu then you should first activate “Advanced Physics Interface Options”.

Nagi Elabbasi
Veryst Engineering
If your model is 3D and you want to impose a temperature on a curve/line it can be done but not as straightforward as imposing the temperature on a boundary/surface. You can do it by right clicking on the Heat Transfer node and selecting Edges -> Weak Constraint or Edges -> Pointwise Constraint from the menu. Set the constraint expression to T-Tset which will impose a temperature of Tset on the line/curve. If you don’t see Weak Constraint in the menu then you should first activate “Advanced Physics Interface Options”. Nagi Elabbasi Veryst Engineering

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