I just recently got a blower/centrifugal fan to use for layer cooling on my 3D printer and I'm thinking about how I want to mount it.
My primary question is exactly as the question title says: does a fan's orientation with respect to gravity affect its flow rate or static pressure? In other words, if I have blower fan in open space and air enters it from above to be blown out the side, will it move more air or do so at a higher static pressure in that orientation than if I were to flip it upside down?
My intuition says that gravity pushing down into the fan from above would be allow slightly better (faster?) flow of air than having to lift the air from below the fan, but I haven't been able to find any information on it.