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-   -   wallShearStress from OpenFoam to Tecplot (http://www.cfd-online.com/Forums/tecplot/106307-wallshearstress-openfoam-tecplot.html)

danielec87 August 24, 2012 13:02

wallShearStress from OpenFoam to Tecplot
 
Hello,

I use the command "wallShearStress" in OpenFOAM and then I post process in tecplot (foamToTec360).

The problem is that, when I open TecPlot, the shear stresses are zero everywhere...

Could you explain me why?

Thank you!

wyldckat August 26, 2012 15:42

Hi Daniele,

I don't have Tecplot to confirm this, but there are two possibilities:
  1. You're looking at the volume results, which are zero by default, since wallShearStress only calculates for the walls. You should try looking at the results on the walls+patches, not the volume.
  2. Or foamToTecplot360 is incomplete and doesn't convert values that only exist on the walls+patches.
Best regards,
Bruno

danielec87 August 30, 2012 18:17

foamToTecplot360 is maybe incomplete...

wyldckat August 31, 2012 05:26

Hi Daniele,

You can try this utility: https://github.com/wyldckat/reconstr...ctSurfaceField - it can reconstruct the values on the walls onto the cell centers near the wall and this way you could represent the values in Tecplot.
Although I haven't tested if it will work as intended for the wall shear stress, so it's advisable for you to compare the results in ParaView first.

reconstructSurfaceField is not present in the official OpenFOAM distributions, so you'll have to follow the instructions from the beginning of that page.

Best regards,
Bruno

Kopy November 4, 2013 11:03

Quote:

Originally Posted by danielec87 (Post 378576)
Hello,

I use the command "wallShearStress" in OpenFOAM and then I post process in tecplot (foamToTec360).

The problem is that, when I open TecPlot, the shear stresses are zero everywhere...

Could you explain me why?

Thank you!

The data ist stored in the boundaryMesh_XX.plt files in the boundaryMesh folder with XX the number of data sets.
You can easily open and plot the data in tecplot.

Regards,
Kopy


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