Maintaining pressure inside a room

LukeS · May 12, 2015, 03:31

Hi,

I am trying to maintain a certain pressure inside a room(zone) in Fluent. I have been doing this using the patch feature however after so many iterations(transient) the pressure equalizes with the operating conditions, I have tried to use a pressure inlet/outlet to assist with this however the pressure just keeps increasing. Is there a way to solve this?

Thanks

pakk · May 12, 2015, 03:51

What is the reason that the pressures is increasing?

Is that physical (you have mass flow inlet) or because of numerical problems?

LukeS · May 12, 2015, 03:59

I have tried multiple methods, in one method I have put in a pressure inlet set at the desired pressure inside the room, and set an outflow also, obviously more air is coming into the room then out so the pressure is increasing. I simple want to maintain a pressure in a room.

May 12, 2015, 03:31	Maintaining pressure inside a room	#1
LukeS New Member Join Date: May 2015 Posts: 7 Rep Power: 10	Hi, I am trying to maintain a certain pressure inside a room(zone) in Fluent. I have been doing this using the patch feature however after so many iterations(transient) the pressure equalizes with the operating conditions, I have tried to use a pressure inlet/outlet to assist with this however the pressure just keeps increasing. Is there a way to solve this? Thanks

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May 12, 2015, 03:51		#2
pakk Senior Member Join Date: Nov 2013 Posts: 1,965 Rep Power: 26	What is the reason that the pressures is increasing? Is that physical (you have mass flow inlet) or because of numerical problems?

May 12, 2015, 03:59		#3
LukeS New Member Join Date: May 2015 Posts: 7 Rep Power: 10	I have tried multiple methods, in one method I have put in a pressure inlet set at the desired pressure inside the room, and set an outflow also, obviously more air is coming into the room then out so the pressure is increasing. I simple want to maintain a pressure in a room.