[andrea_barbera]

Dear OpenFOAM community,

I'm a new OpenFOAM user and I hope that I will not make too many mistakes writing my first posts.

I have tried the tutorial hotRoom in the new release 1.5, and the behaviour of this case is different if compared to the one that we had in release 1.4.1: even if in the room there is only the usual hot source, at the end of the 400 seconds of simulation the mean temperature in the room is diminuished by 40 degress, and would continue to diminuish without reaching a steady state. The velocity field, however, seems correct according to me.

Is this only a large numerical error? And if it is, why it did not happen in release 1.4.1? Can someone help me to skip this problem?

Thanks

Andrea