[magicalmarshmallow]

Hi,

I am trying to compare the effectiveness of 2 fluids - Water and an Oil (which is well characterised) using FLUENT for a particular heat transfer application.
I have done the experiments, and the CFD data matches well for Water, but it's awful for the Oil

I have just put in a constant model to get an idea, but the output says that the oil temperature is the same as the hot phase. (For water there is a 5 K increase, Oil - 155 K). Could this be due to the turbulence model or something else?

I have no idea why this is. Can anyone help me please as I'm under some time pressure. I've made no changes to the model aside from the change in material.