Simulation residual and results problem

Mosayeb 92 · August 9, 2015, 13:23

Hello all
I'm simulating a wind-catcher in fluent in a flow domain.
Continuity equation dosen't converge!! I changed the solution controls and tried different meshing methods, but it didn't help.
Another problem is that the velocity inside the wind-catcher is unlogical and exteremly high!! Please see the attachments.
I would really appreciate it if anyone could help.

Regards

Steffen595 · August 9, 2015, 20:15

are you trying to suck in wind?
Did you put a mass flow to the outlet?
Shouldn't the wind move and something ends up in the wind catcher?

Mosayeb 92 · August 10, 2015, 04:08

Dear steffen595
Thanks for your reply.
No it shouldn't suck in wind. There is a flow in the domain and some part of it enters the wind-catcher.
I didn't put a mass flow to the outlet. How can it help?

Steffen595 · August 10, 2015, 05:52

not at all, because you don't know the mass flow.
What if you make the outlet as entrainment?
Maybe make it just 1 domain with velocity inlet and 2 outlets?

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August 9, 2015, 20:15		#2
Steffen595 Senior Member Join Date: May 2012 Location: Melbourne Posts: 161 Rep Power: 13	are you trying to suck in wind? Did you put a mass flow to the outlet? Shouldn't the wind move and something ends up in the wind catcher?

August 10, 2015, 04:08		#3
Mosayeb 92 New Member Mosayeb Join Date: Jun 2015 Posts: 11 Rep Power: 10	Dear steffen595 Thanks for your reply. No it shouldn't suck in wind. There is a flow in the domain and some part of it enters the wind-catcher. I didn't put a mass flow to the outlet. How can it help?

August 10, 2015, 05:52		#4
Steffen595 Senior Member Join Date: May 2012 Location: Melbourne Posts: 161 Rep Power: 13	not at all, because you don't know the mass flow. What if you make the outlet as entrainment? Maybe make it just 1 domain with velocity inlet and 2 outlets?