Negative Temperature values due to friction between gears.

[Sarikahirpara]

Hello,

I am trying to simulate temperature increase due to friction in a gearbox. I am performing this analysis in coupled field transient so that i can apply rotation and friction between the gears but the problem is, in the temperature result, minimum values are going in negative values. I have attached result images for reference. Please help.

Thank You
Sarika Hirpara