I am modeling the effect of 3 HVLS fans on air flows (air velocity, temperature) in a plant facility and I encounter the following questions:

1. When I changed the customized fan specifications and reran the project, the result did not change. I added heat sources to some of the components in the facility but that does not seem to change the result either. But when I change the area of the disks used to represent the fans and then rerun the test, the result change. Would someone help me understand why is that?

2. When I look at the temperature cut plot, the temperature is absolutely uniform. That shouldn't be the case but I don't know where I am doing it wrong.

Thanks for your guys help!