Fan Boundary Conditions

Whiteblue · June 24, 2018, 14:03

Hi, I'm doing my first CFD model which is for a space that has a supply and an exhaust fan. There's a supply fan supplying X CFM into the space. There's an exhaust fan removing same amount from the space. What's the best approach to model this scenario? How do I input fan boundry conditions? Will this be a transients solver?

Thank you for your help in advance!

student666 · July 6, 2018, 13:51

What's the goal for your case?

If you have one inlet and one outlet it's a standard case: I would put a fixed flow rate BC at the inlet and a fixed static pressure at the outlet, let's say a negative value, as for this patch the "fan" is sucking.

You can also change these values and see what happens.

June 24, 2018, 14:03	Fan Boundary Conditions	#1
Whiteblue New Member Steven Join Date: Jun 2018 Posts: 2 Rep Power: 0	Hi, I'm doing my first CFD model which is for a space that has a supply and an exhaust fan. There's a supply fan supplying X CFM into the space. There's an exhaust fan removing same amount from the space. What's the best approach to model this scenario? How do I input fan boundry conditions? Will this be a transients solver? Thank you for your help in advance!

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July 6, 2018, 13:51		#2
student666 Senior Member M. C. Join Date: May 2013 Location: Italy Posts: 286 Blog Entries: 6 Rep Power: 17	What's the goal for your case? If you have one inlet and one outlet it's a standard case: I would put a fixed flow rate BC at the inlet and a fixed static pressure at the outlet, let's say a negative value, as for this patch the "fan" is sucking. You can also change these values and see what happens.