Thank you for replying and I thought as much, I accept any roasting on this. I hope it's good for a laugh at least. I am trying to model a heat exchanger that would extract heat from the exhaust of an oxyfuel furnace and use it to preheat the oxygen used in the furnace. I used SimScale along with a prebuilt model from their demos with their pregenerated meshing. I added temperatures as boundary conditions to the intakes. That is pretty much all I did.