Volume average of variable over piece of entire domain

pchris22 · August 1, 2024, 07:34

Hey guys,

I have set up my simulation using cfmesh as a mesher and simpleFoam as my solver. My simulation run well and that is not my issue. I would like to make a function which should do a volume average of k (turbulent kinetic energy) for each interaction in a certain part of my hole domain. It would be a cuboid where I know the coordinates of the corners.

If you could help me it would be of great help. Thanks

Kind regards,
pchris22

Yann · August 1, 2024, 12:15

Hello,

You can use the volFieldValue function object for that.

OpenCFD branch (openfoam.com); https://doc.openfoam.com/2306/tools/...volFieldValue/
OpenFOAM foundation branch (openfoam.org): https://github.com/OpenFOAM/OpenFOAM...olFieldValue.H

In order to compute values only on a portion of your simulation domain, you will have to define a cellZone, either directly with snappyHexMesh when meshing, or afterward on an existing mesh with topoSet.

Regards,
Yann

August 1, 2024, 07:34	Volume average of variable over piece of entire domain	#1
pchris22 New Member Join Date: Jul 2024 Posts: 4 Rep Power: 2	Hey guys, I have set up my simulation using cfmesh as a mesher and simpleFoam as my solver. My simulation run well and that is not my issue. I would like to make a function which should do a volume average of k (turbulent kinetic energy) for each interaction in a certain part of my hole domain. It would be a cuboid where I know the coordinates of the corners. If you could help me it would be of great help. Thanks Kind regards, pchris22

August 1, 2024, 12:15		#2
Yann Senior Member Yann Join Date: Apr 2012 Location: France Posts: 1,236 Rep Power: 29	Hello, You can use the volFieldValue function object for that. OpenCFD branch (openfoam.com); https://doc.openfoam.com/2306/tools/...volFieldValue/ OpenFOAM foundation branch (openfoam.org): https://github.com/OpenFOAM/OpenFOAM...olFieldValue.H In order to compute values only on a portion of your simulation domain, you will have to define a cellZone, either directly with snappyHexMesh when meshing, or afterward on an existing mesh with topoSet. Regards, Yann

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Sudden increase the residual of Maxwell's equations	hsezsz	CFX	2	October 13, 2016 07:58
[snappyHexMesh] sHM layer process keeps getting killed	MBttR	OpenFOAM Meshing & Mesh Conversion	4	August 15, 2016 04:21
injection problem	Mark New	FLUENT	0	August 4, 2013 02:30
[blockMesh] non-orthogonal faces and incorrect orientation?	nennbs	OpenFOAM Meshing & Mesh Conversion	7	April 17, 2013 06:42
Volume fraction for entire domain in interFoam	jmcneill	OpenFOAM Post-Processing	5	May 22, 2012 03:10