How to implement a new boundary condition

Neb · May 21, 2020, 13:26

Hi everyone,
I need your help

! I thank you in advance for spending your time. I am a new user of openFoam and I am not very experienced. I need to build a new BC on outlet pressure. The pressure that I must impose depends on the value of the outlet flow rate. Can you give me some indication of how to start? Or is there something similar already implemented?

superkelle · May 22, 2020, 03:49

Hi I have some links for you:

A whole bunch of examples and a good start for OF programming, also BC:

http://www.tfd.chalmers.se/~hani/kurser/OS_CFD/

and

https://wiki.openfoam.com/index.php?...eeks%22_series

I also like the tutorials of wolfdynamic, there are some good examples for codeStream and the use in BC:

http://www.wolfdynamics.com/images/O...g/openfoam.pdf

http://www.wolfdynamics.com/tutorial...out=edit&id=50

Search also for forum post like:

Custom Boundary Condition with OpenFOAM

That is by no means complete, but a good start I think.

superkelle · May 22, 2020, 04:28

Oh and the standard BC:

https://www.openfoam.com/documentati...conditions.php

Neb · May 22, 2020, 04:39

Thanks Superkelle, you have been very kind! this is so much material!

S.

HPE · May 22, 2020, 05:36

Hi,

Some of the links below may also help.

Good luck!

Neb · May 22, 2020, 06:17

Thanks HPE, you are very kind!

May 21, 2020, 13:26	How to implement a new boundary condition	#1
Neb Member Join Date: Mar 2020 Posts: 66 Rep Power: 6	Hi everyone, I need your help! I thank you in advance for spending your time. I am a new user of openFoam and I am not very experienced. I need to build a new BC on outlet pressure. The pressure that I must impose depends on the value of the outlet flow rate. Can you give me some indication of how to start? Or is there something similar already implemented? Last edited by Neb; May 22, 2020 at 04:40.

May 22, 2020, 03:49		#2
superkelle Member alexander thierfelder Join Date: Dec 2019 Posts: 71 Rep Power: 7	Hi I have some links for you: A whole bunch of examples and a good start for OF programming, also BC: http://www.tfd.chalmers.se/~hani/kurser/OS_CFD/ and https://wiki.openfoam.com/index.php?...eeks%22_series I also like the tutorials of wolfdynamic, there are some good examples for codeStream and the use in BC: http://www.wolfdynamics.com/images/O...g/openfoam.pdf http://www.wolfdynamics.com/tutorial...out=edit&id=50 Search also for forum post like: Custom Boundary Condition with OpenFOAM That is by no means complete, but a good start I think. Neb likes this.

May 22, 2020, 05:36		#5
HPE Senior Member Herpes Free Engineer Join Date: Sep 2019 Location: The Home Under The Ground with the Lost Boys Posts: 931 Rep Power: 13	Hi, Some of the links below may also help. Good luck! Neb likes this. __________________ The OpenFOAM community is the biggest contributor to OpenFOAM: User guide/Wiki-1/Wiki-2/Code guide/Code Wiki/Journal Nilsson/Guerrero/Holzinger/Holzmann/Nagy/Santos/Nozaki/Jasak/Primer Governance Bugs/Features: OpenFOAM (ESI-OpenCFD-Trademark) Bugs/Features: FOAM-Extend (Wikki-FSB) Bugs: OpenFOAM.org How to create a MWE New: Forkable OpenFOAM mirror

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May 22, 2020, 04:28		#3
superkelle Member alexander thierfelder Join Date: Dec 2019 Posts: 71 Rep Power: 7	Oh and the standard BC: https://www.openfoam.com/documentati...conditions.php

May 22, 2020, 04:39		#4
Neb Member Join Date: Mar 2020 Posts: 66 Rep Power: 6	Thanks Superkelle, you have been very kind! this is so much material! S.

May 22, 2020, 06:17		#6
Neb Member Join Date: Mar 2020 Posts: 66 Rep Power: 6	Thanks HPE, you are very kind!