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Temperature dependant mixed Boundary condition

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Old   October 28, 2010, 11:56
Default Temperature dependant mixed Boundary condition
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Raimonds Vilums
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Hello,

I have a solid body, and I calculate temperature in it by laplacianFoam. One of its patches has boundary condition like this:

dT/dn + alpha(T) * (T-Tenv) = 0

where alpha(T) is non-linear function taking temperature on the surface as argument, but Tenv is a constant (temperature of environment)

By what means I can set such boundary condition in OpenFoam. I have found some threads about making my own BC already, but still I could not understand where I should start. Maybe there is a similar BC shipped with OpenFOAM, but I don't know. alpha(T) incorporates heat convection and heat radiation (and divided by conductivity of the material)

Raimonds
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Old   October 28, 2010, 14:47
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Nima Samkhaniani
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hi friend
are you familiar with groovyBC ? if not, search it in openFoam wiki
ur boundary condition is a combination fixedValue and fixedGradient and you can use this utility
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Old   February 15, 2011, 12:02
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Thanks for your advice, I have started to get into it. Although, it is not so easy to implement Robin boundary conditions as I expected. See, e.g. this post
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