Hello,

I am trying to model a room that will be used as a low temperature oven to heat up material. Here is a link to the project: https://www.simscale.com/workbench/?pid=2379731572987754971#tab_1-0.

Heated air at 190 deg F enters the room from opposite walls and exits out of the top of the room. A mass of material sits in the middle of the room. The ambient temperature outside of the room (and initial temperature inside it) is 80 deg F. I am trying to do a laminar steady state CHT analysis to show the temperature that the room and material will be maintained at. I am also incorporating the losses through the walls and floor. The simulation titled CHT-With-Wall-Flux is my attempt to model this.

I am getting a solver fatal error for maximum iterations exceeded when I try to run this. In the solver log I notice the minimum and maximum temperatures listed are impossibly high and low, and the solid enthalpy solver uses 1000 iterations. I have tried running this with zero gradient walls, lower inlet velocities, and different meshes and get similar errors each time. I have looked at similar CHT projects and havenâ€™t been able to figure out what the problem may be. Any help is appreciated.

Thanks,

Rick