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aut_iut July 26, 2010 05:30

postprocessing for icoStructFoam solver
Dear Foamer,

I want to see my results for a FSI simulation using paraview.
Seeing other thread I figured out to use following commands:

icoStructFoam . thingOnStick -mesh region1

icoStructFoam . thingOnStick -mesh region1

But, I faced an error executing these commands


Wrong number of arguments, expected 0 found 3
Invalid option: -mesh

How can I fix this error?


aut_iut July 26, 2010 06:41

I should add, executing
foamToVTK -region region1
foamToVTK -region region2

will result in making two seperate VTK folders for region1 and region2.
But running two regions together has a problem. There is no link between mesh moving for two region.

7islands July 26, 2010 21:11

Hi Rasoul,
Try the builtin reader in PV 3.8 ("touch ${PWD##*/}.foam && paraview --data=${PWD##*/}.foam" in your case directory). It should load and display all regions in sync.


aut_iut July 27, 2010 04:25

Thank you Takuya for your responce,
I tried, but faced this error

terminate called after throwing an instance of 'std::length_error'
what(): basic_string::_S_create

Searching on the net, I know that you are familiar with such error. But couldn't understand the solutions for this error. Do you have any suggestion?
I added .foam extension to controlDict file. The error still exists!

7islands July 27, 2010 05:45

Are you sure you are using PV 3.8? That was a familiar error until PV 3.6.x.


aut_iut July 27, 2010 08:36

[IMG]file:///Users/rasoulshirzadeh/Desktop/thingOnStick.jpg[/IMG]Yes, you are right. Using PV 3.8 the error becomes disappeared. But still there is a gap between two regions (see the attached picture). Maybe I asked a stupid question.
I expected to see a connection between two regions.

7islands July 27, 2010 11:08

I don't think there's a reader that can read data that has never been saved (the point coordinates). What's the reason that you believe that the reader should be able to do that?


7islands July 27, 2010 11:51

Said that, in unlikely case you are not aware,
  • For the solid region, there's no point coordinates saved but are displacements with which you can warp the mesh.
  • Still you'll see a gap right after the startMeshMotion time. That's how the simulation goes, not a bug in the reader.

aut_iut July 28, 2010 05:05

So, what is your idea about this picture?

I think it should be like this!

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