[woodwax]

I would like to simulate a Peltier module that is from the hot side cooled by a water radiator. On the cold side is a PCB enclosed in a metal case with air.

The Peltier module is modeled with the Thermal-Electric solver.
The other parts with the Fluent.

The system works well when I set up some electric current through Peltier and water flow in the radiator, I get a nice realistic temperature distribution.


The problem:
I would like to step the current from 0 amps to 1.5 amp in 0.1 A stepping.
This I set up in Thermal-Electric solver, I set 15 steps with tabular current data. In coupled analysis settings I also set 15 steps. In Fluent I cannot found any settings related to this so I left everything as it is.

After the simulation, I get 15 results but about half of them are very unrealistic. Why is that? It is possible to run simulation in Ansys like this, what else I must set for that?

Thank you!

SchematicSketchwithWaterRadiatorpng.png