postprocessing for icoStructFoam solver

aut_iut · July 26, 2010, 05:30

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

--> FOAM FATAL ERROR:

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

How can I fix this error?

Regards,
Rasoul

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.

Takuya

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
Aborted

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.

T

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?

T

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.

T

aut_iut · July 28, 2010, 05:05

So, what is your idea about this picture?

http://openfoamwiki.net/images/e/e5/...ckDeformed.png

I think it should be like this!

July 26, 2010, 05:30	postprocessing for icoStructFoam solver	#1
aut_iut Member Rasoul Join Date: Feb 2010 Posts: 32 Rep Power: 16	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 --> FOAM FATAL ERROR: Wrong number of arguments, expected 0 found 3 Invalid option: -mesh How can I fix this error? Regards, Rasoul

July 27, 2010, 11:51		#8
7islands Super Moderator Takuya OSHIMA Join Date: Mar 2009 Location: Niigata City, Japan Posts: 518 Blog Entries: 1 Rep Power: 20	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. T

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July 26, 2010, 06:41		#2
aut_iut Member Rasoul Join Date: Feb 2010 Posts: 32 Rep Power: 16	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.

July 26, 2010, 21:11		#3
7islands Super Moderator Takuya OSHIMA Join Date: Mar 2009 Location: Niigata City, Japan Posts: 518 Blog Entries: 1 Rep Power: 20	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. Takuya

July 27, 2010, 04:25		#4
aut_iut Member Rasoul Join Date: Feb 2010 Posts: 32 Rep Power: 16	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 Aborted 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!

July 27, 2010, 05:45		#5
7islands Super Moderator Takuya OSHIMA Join Date: Mar 2009 Location: Niigata City, Japan Posts: 518 Blog Entries: 1 Rep Power: 20	Are you sure you are using PV 3.8? That was a familiar error until PV 3.6.x. T

July 27, 2010, 08:36		#6
aut_iut Member Rasoul Join Date: Feb 2010 Posts: 32 Rep Power: 16	[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.

July 27, 2010, 11:08		#7
7islands Super Moderator Takuya OSHIMA Join Date: Mar 2009 Location: Niigata City, Japan Posts: 518 Blog Entries: 1 Rep Power: 20	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? T

July 28, 2010, 05:05		#9
aut_iut Member Rasoul Join Date: Feb 2010 Posts: 32 Rep Power: 16	So, what is your idea about this picture? http://openfoamwiki.net/images/e/e5/...ckDeformed.png I think it should be like this!