[General] Average of SLICE in Paraview

Luttappy · April 30, 2008, 11:21

Hi all

I am relatively new to CFD postprocessing and use Paraview as the main tool to visualize CFD data (generated by Fluent). The results were exported from Fluent in the EnsightGold format. Reading this data into Paraview is easy and robust.

I wanted to calculate the average / mean value of a slice. To display the data of this slice is no problem at all (e.g. temperature distribution). I want to determine the average temperature on that slice (or the median), and the standard distribution. The median filter is shaded in grey and not selectable, however. Is there any way how to calculate the average in a simle way?

When I used the Integrator to integrate all temperature values, and divided manually by the number of cells or points, no sensible result was yielded.

Is it also possible to export the temperature values of that slice in an easy way to Matlab or Excel?

I am grateful for any help. Thanks!! Maurice

aerothermal · June 13, 2012, 19:16

1. use slice filter
2. use integrate filter
3. select in spreadsheet --> cells value and look at area variable
3. use calculator or python calculator to divide T/Area --> you have an average value

SamMallinson · January 9, 2014, 23:50

See http://www.cfd-online.com/Forums/ope...e-average.html

samz · March 27, 2014, 11:14

Hello everybody

I'm new in CFD and I would like to know how to get the area when using the slice function.

My objective is to use this area for calculation of mean value of temperature on that slice.

Thank you very much for your help

SamMallinson · March 27, 2014, 19:11

After you have created your slice, insert the filter "Integrate Variables" (Filter>Alphabetical>Integrate Variables).

Hit apply, and the Integrate Variables panel appears to the right of the Layout.

Select Attribute "CellData" - which calculates the area, and displays the value in the Area column.

samz · March 28, 2014, 16:58

Thank you very much

All is clear for me now

fede32 · December 16, 2018, 18:41

Quote:

Originally Posted by aerothermal

1. use slice filter
2. use integrate filter
3. select in spreadsheet --> cells value and look at area variable
3. use calculator or python calculator to divide T/Area --> you have an average value

How do you use the python calculator? Is there an example to calculate a surface average?

April 30, 2008, 11:21	Average of SLICE in Paraview	#1
Maurice Waldner Guest Posts: n/a	Hi all I am relatively new to CFD postprocessing and use Paraview as the main tool to visualize CFD data (generated by Fluent). The results were exported from Fluent in the EnsightGold format. Reading this data into Paraview is easy and robust. I wanted to calculate the average / mean value of a slice. To display the data of this slice is no problem at all (e.g. temperature distribution). I want to determine the average temperature on that slice (or the median), and the standard distribution. The median filter is shaded in grey and not selectable, however. Is there any way how to calculate the average in a simle way? When I used the Integrator to integrate all temperature values, and divided manually by the number of cells or points, no sensible result was yielded. Is it also possible to export the temperature values of that slice in an easy way to Matlab or Excel? I am grateful for any help. Thanks!! Maurice Luttappy likes this.

June 13, 2012, 19:16		#2
aerothermal Senior Member Guilherme da Silva Join Date: Aug 2010 Location: Sao Paulo - Brazil Posts: 120 Rep Power: 16	1. use slice filter 2. use integrate filter 3. select in spreadsheet --> cells value and look at area variable 3. use calculator or python calculator to divide T/Area --> you have an average value romant, babakflame, pamela and 8 others like this.

January 9, 2014, 23:50	Average for slice	#3
SamMallinson New Member Sam Mallinson Join Date: Aug 2013 Posts: 6 Rep Power: 13	See http://www.cfd-online.com/Forums/ope...e-average.html

March 27, 2014, 11:14	slice area	#4
samz New Member samir Join Date: Mar 2014 Posts: 3 Rep Power: 12	Hello everybody I'm new in CFD and I would like to know how to get the area when using the slice function. My objective is to use this area for calculation of mean value of temperature on that slice. Thank you very much for your help

March 27, 2014, 19:11		#5
SamMallinson New Member Sam Mallinson Join Date: Aug 2013 Posts: 6 Rep Power: 13	After you have created your slice, insert the filter "Integrate Variables" (Filter>Alphabetical>Integrate Variables). Hit apply, and the Integrate Variables panel appears to the right of the Layout. Select Attribute "CellData" - which calculates the area, and displays the value in the Area column. fruitkiwi, shang, Luttappy and 1 others like this.

March 28, 2014, 16:58		#6
samz New Member samir Join Date: Mar 2014 Posts: 3 Rep Power: 12	Thank you very much All is clear for me now

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