Error ?

ghorrocks · February 13, 2012, 07:18

Why do you want a sub region?

Orb · February 13, 2012, 08:02

The CH 17 tutorial uses an impeller blade (a thin surface between the solid and blade) to create an interface for the impeller. IDK, I'm just trying to mimic the tutorial. Is there a way to do this with only using lids and an inlet/outlet boundary condition? I don't want permanent boundary condition values because I want the "fan" to do the work.

ghorrocks · February 13, 2012, 17:33

Also do the flow in an axial rotor/stator simulation. That will show a different approach to rotating machinery modelling.

Don't forget that if you use a momentum source approach (ie do not model the fan but only its momentum added to the flow) you can define the source term to follow the fan performance curve. This means you are not using permanent values and the fan does the "work".

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February 13, 2012, 07:18		#21
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	Why do you want a sub region?

February 13, 2012, 08:02		#22
Orb Member Join Date: Jan 2012 Posts: 52 Rep Power: 14	The CH 17 tutorial uses an impeller blade (a thin surface between the solid and blade) to create an interface for the impeller. IDK, I'm just trying to mimic the tutorial. Is there a way to do this with only using lids and an inlet/outlet boundary condition? I don't want permanent boundary condition values because I want the "fan" to do the work.

February 13, 2012, 17:33		#23
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	Also do the flow in an axial rotor/stator simulation. That will show a different approach to rotating machinery modelling. Don't forget that if you use a momentum source approach (ie do not model the fan but only its momentum added to the flow) you can define the source term to follow the fan performance curve. This means you are not using permanent values and the fan does the "work".