First we have calculated the exchange of factor calculation, then we have taken a half of the tunnel, which is a tunnel of 62 meter length, where we obtained the surface temperature taken into account, conduction in the concrete wall, convection and fire radiation.
And with these temperatures we could obtain a second step to the refined calculation where we consider a section of the concrete wall and the complete simulation with convection, fire radiation, smoke radiation, mutual radiation, which we can do now, because we had the surface temperature and the complete model for concrete.
