OUTLET/OPENING Boundary (Water)

oliveira1820 · May 18, 2018, 02:58

Hello everybody!!

In my simulation this message refering to my OUTLET appears:

****** Notice ****** |
| A wall has been placed at portion(s) of an OUTLET |
| boundary condition (at 3.4% of the faces, 2.7% of the area) |
| to prevent fluid from flowing into the domain. |
| The boundary condition name is: OUTLET. |
| The fluid name is: agua. |
| If this situation persists, consider switching |
| to an Opening type boundary condition instead.

My doubt is if the percentage of faces/area that are preventing fluid flowing out of the domain justify the change from OUTLET from OPENING or if it is a normal result for an OUTLET.

Thanks!

Best Regards

AtoHM · May 18, 2018, 03:08

https://www.cfd-online.com/Wiki/Ansy...f_an_OUTLET.22

Also in a case I had, the message dissapeared upon refining the mesh in the outlet domain.

May 18, 2018, 02:58	OUTLET/OPENING Boundary (Water)	#1
oliveira1820 Senior Member Pedro Oliveira Join Date: Feb 2018 Location: Portugal Posts: 109 Rep Power: 8	Hello everybody!! In my simulation this message refering to my OUTLET appears: **** Notice **** \| \| A wall has been placed at portion(s) of an OUTLET \| \| boundary condition (at 3.4% of the faces, 2.7% of the area) \| \| to prevent fluid from flowing into the domain. \| \| The boundary condition name is: OUTLET. \| \| The fluid name is: agua. \| \| If this situation persists, consider switching \| \| to an Opening type boundary condition instead. My doubt is if the percentage of faces/area that are preventing fluid flowing out of the domain justify the change from OUTLET from OPENING or if it is a normal result for an OUTLET. Thanks! Best Regards

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Wind turbine simulation	Saturn	CFX	58	July 3, 2020 01:13
Centrifugal fan-reverse flow in outlet lesds to a mass in flow field	xiexing	CFX	3	March 29, 2017 10:00
Out File does not show Imbalance in %	Mmaragann	CFX	5	January 20, 2017 10:20
Setting rotating frame of referece.	RPFigueiredo	CFX	3	October 28, 2014 04:59
error message	cuteapathy	CFX	14	March 20, 2012 06:45

May 18, 2018, 03:08		#2
AtoHM Senior Member M Join Date: Dec 2017 Posts: 642 Rep Power: 12	https://www.cfd-online.com/Wiki/Ansy...f_an_OUTLET.22 Also in a case I had, the message dissapeared upon refining the mesh in the outlet domain.