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How can I read the results?

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Old   October 26, 2011, 04:57
Default How can I read the results?
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Samuele Z
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Dear All,

I did the simulation of a certain area.

Once I got the result, I got some files with a huge list of numbers. How can I link this numbers to the position?

I mean: I would like to know velocity in the x, y, z point of my domain. Which is the right line in the U file that I have as output?

Could you help?

Thanks,

Samuele
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Old   October 26, 2011, 05:22
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Nima Samkhaniani
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open it with paraview use:
filter > intergateVariable
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Old   October 26, 2011, 05:24
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Samuele Z
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I will try.
Also, if I wanna view the results on a PC where OpenFOAM is not installed (but Paraview is), what should I do?
When I try to open the output text files (let's say U), I can see anything!
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Old   October 26, 2011, 05:37
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Nima Samkhaniani
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you have several choices for example
1) copy all result data on the second PC
2) use foamToVTK then only transfer vtk files
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Old   October 26, 2011, 05:39
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Samuele Z
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I give the command foamToVTK in the case folder, right?

Thanks a lot,

Samuele
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Old   November 7, 2011, 14:19
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Samuele Z
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Actually,

I am trying to find the value of U in each point of my grid. If I am not wrong there is a relationship between the file with the points and the file with the results.
The question is: which is this relationship? I would like to write a short script which:
- read a certain point (i.e. x0, y0, z0) in the points file
- link this point with the closest cell
- enter in the U file with the label of the cell and read the velocity in that point

Do you think it's a reasonable idea?

Thanks a lot,

Samuele
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Old   November 7, 2011, 15:32
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Nima Samkhaniani
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hi dear samual
i dont know you are looking for what?
if you want cell centroid position you can easily do
with mesh.C()
if you just want to see the value of u i suggest easier above!

whats ur means by "link this point with the closest cell"?
your post is totally vague for me
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Old   November 14, 2011, 05:09
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Samuele Z
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Dear Nimasam,

let me write a more detailed post: I have a domain with 5 flat faces and the bottom face is the terrain-profile of a certain region. Let's say that the boundaries of my domain are: x = 0, 100; y = 0, 100; z = 0, 30.

I perform my simulation. And I have a file U with the results.

Now I want to know the vector U in the point P (20, 20, 5).

What should I do? Which is the link between the file U and the file containing the points?

I hope this explains better my goals.

Thanks a lot,
Samuele
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Old   November 14, 2011, 07:53
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Bernhard
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This information is interwoven with the files in the constant/polyMesh directory. If you're interested in this specific point, I advise you to use the sample utility.
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Old   November 14, 2011, 07:56
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Samuele Z
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Actually,

I need all the points.. That's why I am interested in the `link' between the U file and the points file.

Could you explicit it?

Thanks! Samuele
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Old   November 14, 2011, 08:03
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Bernhard
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Normally you don't want that info. You can read the files with the openfoam-reader for Paraview, or you can use any of the convertors to other post-processing tools. What is it exactly what you want?

More about the polyMesh can be found here: http://www.openfoam.com/docs/user/mesh-description.php
However, I am quite sure this is not what you want to dig in to, since all the utilities are already available.
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Old   November 15, 2011, 07:07
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Samuele Z
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Dear Bernhard,

thanks to you, too, for answering.

Let me try to explain what I wanna do: I wanna have a matrix which correlates the results that I get from my simulation with their x, y, z coordinates. Thus, I can insert this results in a software for a simulator which allows me to recreate the ``real'' conditions depending on the velocity of the asymptotic wind.

Do you think there is a smarter way to do that?
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