Simulating a fan using a cylinder
 

Hi All
I am simulating a fan that cools an electronic equipment inside a column. To simulate the fan On FLUENT, I have used a thin cylindrical geometry with fan boundary conditions from both sides of the cylinder. In the inlet it's "Fan Intake" and the outlet is "Fan Exhaust).


I am not sure if someone could share his experience on the best way of modeling this. The purpose of my study is to see how the cooling is performed, it does not really matter to see the flow across the fan.


Thanks a lot

Need help please

You are currently the only person who knows which software you are using. The "right" way to model a fan inside the computational domain strongly depends on that.

I am using Fluent Ansys

Any help is really appreciated

Hi,



I have done this. It is a simple and fast way to introduce recirulation into an interior domain. I would suppose you'd want some fan swirl. Plus you'd want some throughput. The way my software works allows me to add BC to any interior control surface. So if I draw mass out one surface, I can put it back in on a another surface (other side of the fan) for a net zero mass. For the swirl, you'd need to define the fan axis and compute omega.spin ^(r-r.axis.fan) to get the spin velocity set on the surface.



You can break the fan surface into 4 quadrants for simplicity as I have done this too. You can patch 4 different swirl velocities without the above spin calculation.



If I get some time, I will add a picture.


Regards,

Hi

Please take a look at this
https://youtu.be/UXaeyCGE3nk