[OpenFOAM] Average fields

jml · December 15, 2008, 05:55

Hello,I want to calculate the average of a field when I have finished my simulation. Does someone knows how it's possible to calculate it?

silva · December 15, 2008, 08:04

Hi Jml,

Yup. You can use :

yourField_.weightedAverage( mesh.V() );

You can find more info about this in the Doxygen documentation, as in:

http://foam.sourceforge.net/doc/Doxy...8C-source.html

Regards,
Luiz F.

silva · December 15, 2008, 08:19

Jml,

I meant that you can also write an OpenFOAM code that reads your field and provides the average you want (and then see the results in Paraview).

Still, I don't know if the newest version of Paraview can calculate the average of the field. But it is an option to use the OpenFOAM capabilities to do so.

Best regards,
Luiz F.

jml · December 15, 2008, 11:28

Can I choose the beginning and the end of the average with weightedAverage if I have finished the simulation? is there any way to do the same with paraview?

villet · December 15, 2008, 12:55

Hi Jml, you can use almost any postprocessing utility (=source code) as an example. With your own utility you can postprocess all time directories or just selected ones. I presume you mean a field average. Then your can just print out average values for selected variables.

The second option is to use "Integrate variables" in Paraview. Then divide the integrated values with volume which you can find on the information tab.

December 15, 2008, 05:55	Average fields	#1
jml New Member Jml Join Date: Mar 2009 Posts: 23 Rep Power: 17	Hello,I want to calculate the average of a field when I have finished my simulation. Does someone knows how it's possible to calculate it?

December 15, 2008, 08:04	Hi Jml, Yup. You can use :	#2
silva New Member Luiz Fernando L. R. Silva Join Date: Mar 2009 Location: Rio de Janeiro, RJ, Brazil Posts: 10 Rep Power: 17	Hi Jml, Yup. You can use : yourField_.weightedAverage( mesh.V() ); You can find more info about this in the Doxygen documentation, as in: http://foam.sourceforge.net/doc/Doxy...8C-source.html Regards, Luiz F.

December 15, 2008, 08:19	Jml, I meant that you can a	#3
silva New Member Luiz Fernando L. R. Silva Join Date: Mar 2009 Location: Rio de Janeiro, RJ, Brazil Posts: 10 Rep Power: 17	Jml, I meant that you can also write an OpenFOAM code that reads your field and provides the average you want (and then see the results in Paraview). Still, I don't know if the newest version of Paraview can calculate the average of the field. But it is an option to use the OpenFOAM capabilities to do so. Best regards, Luiz F.

December 15, 2008, 11:28	Can I choose the beginning and	#4
jml New Member Jml Join Date: Mar 2009 Posts: 23 Rep Power: 17	Can I choose the beginning and the end of the average with weightedAverage if I have finished the simulation? is there any way to do the same with paraview?

December 15, 2008, 12:55	Hi Jml, you can use almost any	#5
villet Member Ville Tossavainen Join Date: Mar 2009 Posts: 60 Rep Power: 17	Hi Jml, you can use almost any postprocessing utility (=source code) as an example. With your own utility you can postprocess all time directories or just selected ones. I presume you mean a field average. Then your can just print out average values for selected variables. The second option is to use "Integrate variables" in Paraview. Then divide the integrated values with volume which you can find on the information tab.

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