[CaroVandame]

But doesn't the error message means that the keyword patches should be defined in the surfaces section?

"keyword patches is undefined in dictionary "/home/caro/OpenFOAM/caro-2.1.0/run/pipe_flow/system/sampleDict::surfaces" "

[santiagomarquezd]

It couldn't find the keyword "patches" and checking the dict given with the source code, this keyword is present only in the sets section. The idea is to try adding something in this section to see what happens.

Regards

[CaroVandame]

so using the tutorial LadenburgJet60psi as a guide (because they also want to sample for a wall property), here is what I wrote

sets
(
face
{
name cyl_Wall;
axis x;
start (0 0.05 0);
end (10 0.05 0);
nPoints 100;
}
);

But now I get this error:
keyword type is undefined in dictionary "/home/caro/OpenFOAM/caro-2.1.0/run/pipe_flow/system/sampleDict::sets"

I must be missing something obvious, I just don't see it...

[santiagomarquezd]

Yes,

type uniform;

at the beginning of the definition.

[CaroVandame]

And now I get my "keyword patches undefined ..." error again...

[santiagomarquezd]

What FOAM version are you using?

[CaroVandame]

OpenFOAM 2.1.0

[santiagomarquezd]

Please check:

/opt/openfoam<your_version>/applications/utilities/postProcessing/sampling/sample/sampleDict

in order to see the correct wording of the dictionary, the keywords have changed in the last versions. Now the keyword patches is required in surfaces too.

Regards.

[CaroVandame]

Thanks so much for your help Santiago!!!

It seems you do not need to specify anything in sets, as long as everything is defined correctly in surfaces.

[santiagomarquezd]

You welcome. Yes, sets is not more needed. It was used only for testing purposes.

Bye.

[cutty4sark]

Hello,

I was wondering if anyone has used the sampleDict to determine variable values along a moving mesh. Particularly, I'm interested in the displacement of a solid in an FSI case (Turek and Hron benchmark). It would be very similar to determining the displacement of the tip of the console in the flappingConsole FSI case that is packaged with the extend versions of 1.5 and 1.6. I've tried using the surfaces functionality of the sampleDict and like many other folks end up with empty file folders. This leads me to believe there are issues with trying to use the boundaries/interfaces between solid and fluid as my surface patch like others have experienced. This also brings me to the issue of trying to define a line or surface based on xyz coordinates as I'm interested in the variation of x,y,z over time as the solid is deflected. Any help would be appreciated and I'm curious if anybody else has experienced this as I couldn't find anything in the forums.

Regards,

Andrew

[mmkr825]

Hi everyone,
I am fresher to openFoam. I came to know the uses of swak4Foam utility for writing boundary conditions. In my application also i need to apply zero flux boundary condition. So i wish to install swak4Foam. Now i am working on OF 2.1.1 version.
I followed every step as mentioned in the tutorials but i am not able to get it. The error message as follows

Error message:-

malli_reddy@ubuntu:~/OpenFOAM/malli_reddy-2.1.1$ svn checkout https://openfoam-extend.svn.sourcefo...ies/swak4Foam/

svn: OPTIONS of 'https://openfoam-extend.svn.sourcefo...ries/swak4Foam': Could not resolve hostname `openfoam-extend.svn.sourceforge.net': No address associated with hostname (https://openfoam-extend.svn.sourceforge.net)



Could you please suggest me how to overcome this problem. And suggest me some good tutorial for the swak4Foam.

Thanks
Regards

[legenoy]

Originally Posted by cutty4sark

Hello,

I was wondering if anyone has used the sampleDict to determine variable values along a moving mesh. Particularly, I'm interested in the displacement of a solid in an FSI case (Turek and Hron benchmark). It would be very similar to determining the displacement of the tip of the console in the flappingConsole FSI case that is packaged with the extend versions of 1.5 and 1.6. I've tried using the surfaces functionality of the sampleDict and like many other folks end up with empty file folders. This leads me to believe there are issues with trying to use the boundaries/interfaces between solid and fluid as my surface patch like others have experienced. This also brings me to the issue of trying to define a line or surface based on xyz coordinates as I'm interested in the variation of x,y,z over time as the solid is deflected. Any help would be appreciated and I'm curious if anybody else has experienced this as I couldn't find anything in the forums.

Regards,

Andrew

Hello,
I am using FSI for my work. I find Sample with OF-1.6 have some problems and I always have failed to get displacement with sample. Could you please suggest me how to overcome this problem?

Thanks
Regards

Legenoy

[Josefina]

Hello Everybody!

I am quite new with Open Foam and I try to use the sample utility. I read the very interesting questions and answers and I saw that sometimes the files in the set file are empty.

My problem is that the set file is not even created in my case directory. When I apply the sample utility I get this:

Create time

Create mesh for time = 0

Time = 0

Time = 0.1

Time = 0.2

Time = 0.3

Time = 0.4

Time = 0.5

Time = 0.6

Time = 0.7

Time = 0.8

Time = 0.9

Time = 1

End

So I think the utility works but I did not find how to create the set file. Somebody can help me please?

[bigphil]

If the sample utility does not find the specified field in the time step then it skips the time step.

Can you post you sampleDict here?

Philip

[alexeym]

Hi,

Originally Posted by Josefina

So I think the utility works but I did not find how to create the set file. Somebody can help me please?

Did you look in postProcessing/sets folder?

[Josefina]

Hi!
Before all, thank you for your answers!

Here you can find my sampleDict file:

setFormat raw;
surfaceFormat raw;

formatOptions
{
ensight
{
format ascii;
}
}

interpolationScheme cell;

fields
(
p_rgh
U
alpha1
);


sets
(
lineX1
{
type uniform;
axis xyz;
start (0. 0.0 0.1);
end (0.2 0. 0.18);
nPoints 10;
}

lineX2
{
type face;
axis xyz;
start (0. 0.1 0.1);
end (0. 0.2 0.1);
}

somePoints
{
type cloud;
axis xyz;
points ((0.0 0.0 0.15)(0.2 0.2 0.15));
}


);


I think I had a problem of OpenFoam version. I have written "sampleSets" instead of "sets" but now it works! and the "sets" file is indeed created in the "postProcessing" file.