How can I read the results?
 

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

open it with paraview use:
filter > intergateVariable

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!

you have several choices for example
1) copy all result data on the second PC
2) use foamToVTK then only transfer vtk files

I give the command foamToVTK in the case folder, right?

Thanks a lot,

Samuele

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

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

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

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.

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

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.

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?