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Heat transfer settings in ANSYS CFX Pre.

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Old   November 6, 2010, 04:08
Default Heat transfer settings in ANSYS CFX Pre.
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Can some one tell me the difference between specifying a heat flux from a wall and adding a heat source through a subdomain to the simulation.
I mean when it is required to deal with convective heat transfer should the approach be to define a wall boundary condition with heat flux (or) is it required to define a solid domain accordingly and then a sub domain with in it to add the heat energy. what is the difference indeed.

Best regards,
Santhosh.
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Old   November 6, 2010, 07:14
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On the boundary the flux is applied at the wall boundary and for the sub domain it is applied in a volume inside the domain.

Simply choose the approach which most closely matches what is actually happening - is it volumetric heating or surface heating?
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