Compute average of multiple .plt files

35k · October 30, 2023, 08:54

I am once again seeking for advice :/

I have multiple .plt solution files from my CFD analysis. All for the exact same mesh with the same number of zones and variables, but with slightly different results. Now i want to gather all of my .plt files and calculate an averaged solution. I am trying to solve it using PyTecplot for easy automation and additional cases, but my knownledge is limited and I'm only getting error after error.

Being honest, this sounds like a pretty easy task - just loop through every variable in every zone, add them up, divide by number of .plt files and export to new file.

I can't be the first one that comes up with this problem, however I haven't found any existing code. If you have suggestions, I'll be deeply thankful!

wsfowler · November 7, 2023, 21:15

We have a PyTecplot script build for that exact purpose!

It's available here:
https://github.com/Tecplot/handyscri...TimeAverage.py

And we have a video demonstrating it here:
https://tecplot.com/2022/06/29/pytec...ta-statistics/

If you need additional assistance, our support staff is available to help. Just contact support@tecplot.com

October 30, 2023, 08:54	Compute average of multiple .plt files	#1
35k New Member Hannes Join Date: Nov 2020 Posts: 2 Rep Power: 0	I am once again seeking for advice :/ I have multiple .plt solution files from my CFD analysis. All for the exact same mesh with the same number of zones and variables, but with slightly different results. Now i want to gather all of my .plt files and calculate an averaged solution. I am trying to solve it using PyTecplot for easy automation and additional cases, but my knownledge is limited and I'm only getting error after error. Being honest, this sounds like a pretty easy task - just loop through every variable in every zone, add them up, divide by number of .plt files and export to new file. I can't be the first one that comes up with this problem, however I haven't found any existing code. If you have suggestions, I'll be deeply thankful!

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November 7, 2023, 21:15		#2
wsfowler Senior Member Scott Fowler Join Date: May 2009 Posts: 112 Rep Power: 16	We have a PyTecplot script build for that exact purpose! It's available here: https://github.com/Tecplot/handyscri...TimeAverage.py And we have a video demonstrating it here: https://tecplot.com/2022/06/29/pytec...ta-statistics/ If you need additional assistance, our support staff is available to help. Just contact support@tecplot.com