I’m trying to simulate the temperature inside a device to determine the best placement of fans. As the geometry is rather complex I’m using the IBM solver with “External flow” to model the air.
Inside the device are a number of heat sources and a water boiler. The heat sources can easily be added by power sources (under advanced concepts). But for the boiler, I would have liked to set a constant temperature to the outside wall. This is however not possible as decribed [here] (Contacts in Conjugate Heat Transfer | Contacts | SimScale).
There is a nice workaround described here. But I think this only works for the non IBM solver. Any ideas how I could approach this problem?
I’m not sure if I follow why the workflow provided there shouldn’t work in your case, could you share a link to your project so that we can take a closer look at it?
You could use the workflow there (splitting the surfaces) and apply a wall boundary condition to the one where you need a fixed temperature value:
My mistake was to create the flow domain in the simulation with a primitive body and the “external flow” domain slider turned on in the simulation setup. This way you can’t delete the body and you don’t have access to the fluid faces.
I fixed this by creating the fluid region in CAD. Flow Volume → External didn’t work. But creating a box and subtracting the internals with a boolean operation did work. Finally, deleting the boiler to create an “empty volume” was possible.
