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Convection Heat Transfer

Convection Heat Transfer

Convection Heat Transfer

(OP)
For the purpose of convection Boundary condition, is it necessary to define the convection coefficient? I only  have a time based value, but for some reason the program would not let me define a table of the convection coefficient.  
Could anyone help  

RE: Convection Heat Transfer

What software are you using?  And yes you will need to calculate the h.

Tobalcane
"If you avoid failure, you also avoid success."  

RE: Convection Heat Transfer

(OP)
I am using Ansys version 11.
It is not simple to find one single value for h. I am modelling a real test and have about 8000 values (over time) for the surface temperature!  

RE: Convection Heat Transfer

Oh ok, I have never used Ansys, I typicaly use Flotherm for this application.  for the surface temp, can you avarage it out or is there a huge delta between them?  It is sounding more like a transient probem than steady state.

Tobalcane
"If you avoid failure, you also avoid success."  

RE: Convection Heat Transfer

I suggest that you RF this posting and re-post in the ANSYS forum.

Nonetheless, if your analysis program does the FEA, then the effective htc should flow out of the analysis.

TTFN

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