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Inconsistent foamToVTK -legacy with previous versions

Summary

Steps to reproduce

Convert any OpenFOAM case using openfoam/1706 first and type the following command:

foamToVTK

then use openfoam/1912 and type:

foamToVTK -legacy

you will see that, in case of a tensor with class volSymmTensorField (e.g. UPrime2Mean), the order of the different tensor components is changed, before it was:

XX XY XZ YY YZ ZZ

in the latest -legacy version is

XX YY ZZ XY XZ YZ

since the expected correct order is the first one, please correct the .vtk generation in the new foamToVTK -legacy version. I haven't tried if this problem occurs also without the "-legacy" flag.

Example case

What is the current bug behaviour?

What is the expected correct behavior?

Relevant logs and/or images

Environment information

  • OpenFOAM version :
  • Operating system :
  • Hardware info :
  • Compiler :

Possible fixes

Thank you in advance and have a nice day, Matteo