Swirl diffuser flow

lpy2009 · September 10, 2009, 13:54

Hey guys,

I'm working on the air change effectiveness of a room, with swirl diffusers as the main air supply.

Here is the geometry that i'm using to model a swirl diffuser, with the flow of the fluid out of the thickness of the circular disc as show below.

I've calculated the swirl velocity with the flow rate. What do i have to setup in the velocity inlet boundary condition of the swirl diffuser to get a swirl motion in the inlet ?

I've seen the option of tangential axial radial , and wondering how do i convert the velocity to components of tangential axial and radial.

Please help me out here.
Thanks alot

pmghadge · September 10, 2009, 23:09

Pls help us if somebody know it.

zahrarashidi · January 8, 2015, 03:20

hi i have exactly your question!did u solve it?

September 10, 2009, 13:54	Swirl diffuser flow	#1
lpy2009 New Member PY Join Date: Sep 2009 Posts: 2 Rep Power: 0	Hey guys, I'm working on the air change effectiveness of a room, with swirl diffusers as the main air supply. Here is the geometry that i'm using to model a swirl diffuser, with the flow of the fluid out of the thickness of the circular disc as show below. I've calculated the swirl velocity with the flow rate. What do i have to setup in the velocity inlet boundary condition of the swirl diffuser to get a swirl motion in the inlet ? I've seen the option of tangential axial radial , and wondering how do i convert the velocity to components of tangential axial and radial. Please help me out here. Thanks alot

September 10, 2009, 23:09	I am also looking for same thing today....	#2
pmghadge New Member Prashant Join Date: Mar 2009 Location: texas Posts: 6 Rep Power: 17	Pls help us if somebody know it.

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January 8, 2015, 03:20		#3
zahrarashidi New Member zahra rashidi Join Date: Dec 2014 Posts: 9 Rep Power: 11	hi i have exactly your question!did u solve it?