temperature profile on boundary

sivakumar

Hi all, I am having a problem with imposing a varying temperature profile on wall(2d pipe flow).The profile is wall is 153 cm long with temperature going from 900 - 1400k in 0 - 18 cm(linearly) constant at 1400k in 18 - 44cm 1400 - 700k in 44 - 60 cm(linearly) constant at 700k in 60 - 153cm I try to put this by splitting the wall into 4 different zones. The resulting temperature profile in the reactor matches the wall profile except for the first zone, where the temperature is limited to 1 k by fluent. Can anybody give me some ideas to overcome this. I would really apprecate the help. thanks in advance, sivakumar