2D swirling flow NOT axisymmetric

Giuki · May 23, 2009, 10:43

Hey all,

I'm simulation reactive flow through a combustion chamber. Due to the geometry of the chamber I cannot specify a symmetry plane. In that way I cannot use the axisymmetric swirl solver in Fluent. As the air and fuel is not mixing and not behaving as they would with a physical swirler, I am wondering if there are 'trics' to be able to simulate swirl in a 2D problem. These could as well be geometrical trics in order to redirect the flow. I've been trying and searhing but haven't found a solution for my problem.

If you desire more information, feel free to ask!

Thanks in advance!!!

Giuki

sfaquadri · May 29, 2009, 01:09

is your axis horizontal??
Fluent will consider axi symmetric models only if u have the symmetric axis as horizontal..
do i answer you ??
Farhan

Giuki · May 29, 2009, 03:22

Dear sfaqaudri,

Thank you for your reply! Well, I'm aware of that constraint, but it is in my problem definition that my complete model is way above the axis? Which makes that no axis lies in my domain and for which I cannot use any axisymmetrical solver of Fluent.

I wanted to know if there are some 'tricks' to model swirl in 2D without using the "2D axisymmetric swirl" model.

Regards!

sfaquadri · May 30, 2009, 00:30

well.. am not so well versed with fluent, but i would go with velocity components (tangential component) and get my work done..
all the best !

May 23, 2009, 10:43	2D swirling flow NOT axisymmetric	#1
Giuki New Member Giuki Cael Join Date: May 2009 Location: Belgium/The Netherlands Posts: 13 Rep Power: 16	Hey all, I'm simulation reactive flow through a combustion chamber. Due to the geometry of the chamber I cannot specify a symmetry plane. In that way I cannot use the axisymmetric swirl solver in Fluent. As the air and fuel is not mixing and not behaving as they would with a physical swirler, I am wondering if there are 'trics' to be able to simulate swirl in a 2D problem. These could as well be geometrical trics in order to redirect the flow. I've been trying and searhing but haven't found a solution for my problem. If you desire more information, feel free to ask! Thanks in advance!!! Giuki

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May 29, 2009, 01:09		#2
sfaquadri New Member Farhan Join Date: Apr 2009 Location: San Antonio Posts: 3 Rep Power: 17	is your axis horizontal?? Fluent will consider axi symmetric models only if u have the symmetric axis as horizontal.. do i answer you ?? Farhan

May 29, 2009, 03:22		#3
Giuki New Member Giuki Cael Join Date: May 2009 Location: Belgium/The Netherlands Posts: 13 Rep Power: 16	Dear sfaqaudri, Thank you for your reply! Well, I'm aware of that constraint, but it is in my problem definition that my complete model is way above the axis? Which makes that no axis lies in my domain and for which I cannot use any axisymmetrical solver of Fluent. I wanted to know if there are some 'tricks' to model swirl in 2D without using the "2D axisymmetric swirl" model. Regards!

May 30, 2009, 00:30		#4
sfaquadri New Member Farhan Join Date: Apr 2009 Location: San Antonio Posts: 3 Rep Power: 17	well.. am not so well versed with fluent, but i would go with velocity components (tangential component) and get my work done.. all the best !