Reply To: backflow fault in the “Setadvectiondiffusionconvectionboundary”
Temperature boundaries may be created using e.g. setAdvectionDiffusionTemperatureBoundary. Usage examples for this and alternatives are provided in e.g. thermal/porousPlate(2,3)d or thermal/squareCavity(2,3)d.
If this doesn’t help we would need to more closely check your application code to exclude any other problems in the setup.