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CFD Online Discussion Forums (https://www.cfd-online.com/Forums/)
-   FLUENT (https://www.cfd-online.com/Forums/fluent/)
-   -   reverse flow in pressure outlet (https://www.cfd-online.com/Forums/fluent/94824-reverse-flow-pressure-outlet.html)

sepideh.bz October 30, 2018 06:54
reverse flow
 
#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?:confused:

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 :D

/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
Reverse flow in pressure outlet
 
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
under relaxation factor
 
Quote:
Originally Posted by misagh (Post 386029)
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:confused:


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