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-   -   Free Stream Temperature in natural convection problem (http://www.cfd-online.com/Forums/fluent/84301-free-stream-temperature-natural-convection-problem.html)

tomcatbobby January 25, 2011 17:02

Free Stream Temperature in natural convection problem
 
Hi

I've seen quite a few posts asking this questions with regards to modelling natural convection?

By the definition of free stream temperature that I understand-surely it is always changing and cannot be considered constant for modelling natural convection?

Thanks

ComputerGuy January 26, 2011 22:48

When you're modeling natural convection, you won't specify the boundary condition at the solid/fluid interface -- it's coupled heat transfer. The free-stream temperature you're citing is associated with a forced convection boundary condition.

Regards,
ComputerGuy

tomcatbobby January 27, 2011 05:41

I dont understand how I would set this up then. At the moment, I have two BC's. One for the wall's which is a convection coefficient and I this is where I thought I would need to to put the free stream temperature. The other BC is for the heater which is set at a fixed temperature.

Thanks


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