reverse flow in pressure outlet

sepideh.bz · October 30, 2018, 06:54

#The reverse flow occurs at the top of the last louver (next to the outlet)in double skin facade.How can i fix this error message in ansys fluent?

Maddin · November 4, 2018, 14:02

Reserve flow is no error - it's only a "hint" for you.
You could adjust the back flow in the boundary settings.
In other software I would enable extrusions or "old school" you add it in your model in front of the meshing

/edit: Mesh quality you should anyways.

mojtaba.safdari.ms@gmail. · November 12, 2018, 03:25

it is very useful to reduce the urf of momentom

sant021 · June 27, 2019, 01:21

Hi,

I am trying to solve a cryogenic problem where density of gas changes with temperature. When i change the density property it is showing reverse flow in pressure outlet, but if i use constant density there is no reverse flow.

Gbeatz · January 14, 2020, 06:17

Quote:

Originally Posted by misagh

i had the same problem.i changed the urf(under relaxation factor) and the problem eliminated.
i am not sure whether it solves your problem or not...
best regards

how do changing of under relaxation factor affect the quality of the results obtained from a fluent simulation

October 30, 2018, 06:54	reverse flow	#21
sepideh.bz New Member Join Date: Oct 2018 Posts: 3 Rep Power: 7	#The reverse flow occurs at the top of the last louver (next to the outlet)in double skin facade.How can i fix this error message in ansys fluent?

June 27, 2019, 01:21	Reverse flow in pressure outlet	#24
sant021 New Member Santosh Kumar Sahu Join Date: Oct 2015 Posts: 1 Rep Power: 0	Hi, I am trying to solve a cryogenic problem where density of gas changes with temperature. When i change the density property it is showing reverse flow in pressure outlet, but if i use constant density there is no reverse flow.

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November 4, 2018, 14:02		#22
Maddin Senior Member Join Date: Mar 2009 Posts: 260 Rep Power: 18	Reserve flow is no error - it's only a "hint" for you. You could adjust the back flow in the boundary settings. In other software I would enable extrusions or "old school" you add it in your model in front of the meshing /edit: Mesh quality you should anyways.

November 12, 2018, 03:25		#23
mojtaba.safdari.ms@gmail. New Member taba Join Date: Dec 2017 Posts: 5 Rep Power: 8	it is very useful to reduce the urf of momentom