Modelling Impulse Fans

msmith · December 19, 2013, 19:43

Hi all,

I've been trying for a while to model an impulse fan correctly.

If I specify the suction side of the fan as an exhaust and the supply side as an inlet, I get pretty good flow patterns, however the air properties (such as age of air) are not preserved.

How do I link the two boundaries to preserve conditions?

A_Prakash · December 25, 2013, 13:47

You could use domain interface option. Jet fan is not considered as a subdomain. With that said, the casing of your jet fan can be a wall. Inlet side would be a domain interface (inlet & inlet shadow pair) with interface MassFlowRate value corresponding to your fan duty.

December 19, 2013, 19:43	Modelling Impulse Fans	#1
msmith New Member Michael Smith Join Date: Dec 2013 Location: Canberra, Australia Posts: 17 Rep Power: 12	Hi all, I've been trying for a while to model an impulse fan correctly. If I specify the suction side of the fan as an exhaust and the supply side as an inlet, I get pretty good flow patterns, however the air properties (such as age of air) are not preserved. How do I link the two boundaries to preserve conditions?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Car park ventilation and impulse fans	guillaume	Phoenics	9	October 27, 2015 05:57
Car park ventilation and impulse fans	guillaume	FLUENT	3	June 27, 2011 11:17
Car park ventilation and impulse fans	guillaume	Main CFD Forum	12	June 27, 2011 11:16
Car park ventilation and impulse fans	guillaume	Siemens	0	May 11, 2008 20:00
Car park ventilation and impulse fans	guillaume	CFX	0	May 11, 2008 19:59

December 25, 2013, 13:47		#2
A_Prakash Member Abdul Afoo Parkar Join Date: Oct 2012 Posts: 42 Rep Power: 13	You could use domain interface option. Jet fan is not considered as a subdomain. With that said, the casing of your jet fan can be a wall. Inlet side would be a domain interface (inlet & inlet shadow pair) with interface MassFlowRate value corresponding to your fan duty.