[OpenFOAM] Average values in local areas

sven82 · October 30, 2008, 08:16

Hi everybody,

My question is how can they calculate a average value of p or U , from a local area in a model (VTK - import) in paraview or anywhere else.

for now I can only calculate the average values from the boundarys with patchAverage.

thx for help

ep4 · November 26, 2008, 12:25

Hi all,

I have the same question.
Does someone know how it's possible to calculate with OpenFoam or paraview the mean value of variables on given surface or volume?

Thank you

Eric

gschaider · November 27, 2008, 08:20

Hi Eric!

Have you tried the patchAverage-utility?

Bernhard

ep4 · November 27, 2008, 08:56

Thank you for your answer.

Actually, the surface i'm interested in is not a patch.
The other solution i have found is to take the integrated value (Integrate Variables in paraview) on the surface and to divide the obtained value by the surface area. It works fine.

Eric

Subodh · June 2, 2009, 00:25

Hi Eric,

Did you come up with any other way than using ParaView. I am looking forward for your help.

Thanks in advance
Subodh

sven82 · June 16, 2009, 10:15

Dear Foamers

This function gives me the value for the velocity in x,y,z direction. This value divided with the area gives the average velocity for the whole area. Is that right?

Best regards

October 30, 2008, 08:16	Average values in local areas	#1
sven82 Member Sven Degner Join Date: Mar 2009 Location: Zürich Posts: 55 Rep Power: 17	Hi everybody, My question is how can they calculate a average value of p or U , from a local area in a model (VTK - import) in paraview or anywhere else. for now I can only calculate the average values from the boundarys with patchAverage. thx for help

November 26, 2008, 12:25	Hi all, I have the same que	#2
ep4 Member Pattyn Eric Join Date: Mar 2009 Posts: 61 Rep Power: 17	Hi all, I have the same question. Does someone know how it's possible to calculate with OpenFoam or paraview the mean value of variables on given surface or volume? Thank you Eric

November 27, 2008, 08:20	Hi Eric! Have you tried the	#3
gschaider Assistant Moderator Bernhard Gschaider Join Date: Mar 2009 Posts: 4,225 Rep Power: 51	Hi Eric! Have you tried the patchAverage-utility? Bernhard __________________ Note: I don't use "Friend"-feature on this forum out of principle. Ah. And by the way: I'm not on Facebook either. So don't be offended if I don't accept your invitation/friend request

November 27, 2008, 08:56	Thank you for your answer.	#4
ep4 Member Pattyn Eric Join Date: Mar 2009 Posts: 61 Rep Power: 17	Thank you for your answer. Actually, the surface i'm interested in is not a patch. The other solution i have found is to take the integrated value (Integrate Variables in paraview) on the surface and to divide the obtained value by the surface area. It works fine. Eric

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June 2, 2009, 00:25		#5
Subodh New Member Subodh Kumar Join Date: Apr 2009 Location: India Posts: 9 Rep Power: 17	Hi Eric, Did you come up with any other way than using ParaView. I am looking forward for your help. Thanks in advance Subodh

June 16, 2009, 10:15		#6
sven82 Member Sven Degner Join Date: Mar 2009 Location: Zürich Posts: 55 Rep Power: 17	Dear Foamers This function gives me the value for the velocity in x,y,z direction. This value divided with the area gives the average velocity for the whole area. Is that right? Best regards