# Radiative equilibrium wall condition in OpenFOAM

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 September 11, 2011, 23:31 Radiative equilibrium wall condition in OpenFOAM #1 New Member   Nishit Joseph Join Date: Nov 2010 Posts: 29 Rep Power: 7 Hi OpenFOAM users! I am a ug student with little experience in programming in OpenFOAM. I trying to re produce a result for a perfect gas CO_2 simulation for the Manned Breaking System (MBS) Mars capsule using a compressible solver I developed using the recently available compressible libraries and solvers in OF-1.6-ext. The issue is the simulation employed a wall temperature at Radiative equilibrium conditions. This condition uses the Stephan-Boltzmann Law to compute the wall temperature and since the heat flux at the wall is of paramount interest I need to know how to apply an appropriate patch for my model. Can any one please guide me on if such a patch is already available and if not how do I go about implementing such a patch. I would like to implement this at the wall $\dot{q}_w = -\lambda \left ( \frac{\partial T}{\partial n} \right )_w=\sigma \epsilon T_w^4$ Thank in advance! Nishit