Hi,
First thanks for your help and sorry for the time of response,
My problem is the following :
I have a turbine blade in a steady flow, the heat flux and the temperature at the interface are given by a CFD solver called SU2.
So now i need to implement the robin boundary condition. In my case the expression is the following :

where the indice I represent the Interface, n the number of iteration, f the fluid field and s the solid field. The h coefficient is calculated at each iteration with the CFD data.
The fourier condition is the other name of the robin boundary condition.