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Old   May 5, 2015, 17:07
Default Exporting some results data at text file format
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Mehdi Asghari
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Hi all Foamers.
I have solved a 2D transient heat conduction problem by OpenFoam 2.3.1. Now, I’m going to write a text programing file (can be written at any programing language, for example, MatLab or FORTRAN).
The specifications of this program have been presented as follows:
Input: The geographical coordinates of a desired point into the solid material.
Output: The temperature of that specified point (it’s better to consider temperature interpolation of neighboring cells)
This program may be structurally similar to the following one:
Code:
Read (*,x , y); /***input***/
.
.
.
.
T=….
Write (T, temp.txt); /****Output*****/
END
Can anybody have any idea for this program file writing(for finding output)?
Cheers;
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Old   May 6, 2015, 06:59
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Armin
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Quote:
Originally Posted by Asghari_M View Post
Hi all Foamers.
I have solved a 2D transient heat conduction problem by OpenFoam 2.3.1.
....
Can anybody have any idea for this program file writing(for finding output)?
Cheers;
You don't need to write any code to do this, just use the probeLocations utility in OpenFOAM. You can find an example in this tutorial:
tutorials/lagrangian/reactingParcelFoam/parcelInBox

If your number of probe locations is not too big, you could also do this during run time to get a higher temporal resolution. You would use the probe functionObject to do that, for an example see this tutorial:
tutorials/incompressible/pimpleFoam/TJunction
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Old   May 6, 2015, 10:38
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Mehdi Asghari
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Quote:
Originally Posted by dkxls View Post
You don't need to write any code to do this, just use the probeLocations utility in OpenFOAM. You can find an example in this tutorial:
tutorials/lagrangian/reactingParcelFoam/parcelInBox

If your number of probe locations is not too big, you could also do this during run time to get a higher temporal resolution. You would use the probe functionObject to do that, for an example see this tutorial:
tutorials/incompressible/pimpleFoam/TJunction
Dear Armin,
Thanks for this great idea. That is definitely helpful.
Of course, I haven't still examined your suggested functions and tutorials. However, I need to save the temperature of specified location in terms of time at a text format.
For example, the text file can be such as following ones:
In the step number form:
(300,1)
(300.05,2)
.
.
.
Or at time step following:
(300,0.001)
(300.05,0.002)
.
.
.
The reason for above format is this fact that I need to use that probed temperature as an input for MatLab software in term of time.
I'd appreciated for any idea to do this task.
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Old   May 6, 2015, 11:51
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Quote:
Originally Posted by Asghari_M View Post
However, I need to save the temperature of specified location in terms of time at a text format.
That's exactly what I have just explained to you. Check the tutorial!
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Old   May 6, 2015, 16:46
Default I didn't find any output for that Location
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Mehdi Asghari
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Ok, I added a probesDict file at system folder.
However, I didn't find any output in my case folder.
My probesDict presented as follows:
Code:
FoamFile
{
    version         2.0;
    format          ascii;
    class           dictionary;
    location        system;
    object          probesDict;
}
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 
// Fields to be probed. runTime modifiable!
fields
(
    T 
);
 
// Locations to be probed. runTime modifiable!
probeLocations
(
    (0.1 0.0 0.250)
);
However, I couldn't find any post-processing data for this probed location(point).
Where can I observe the output probed data in?

Last edited by Asghari_M; May 6, 2015 at 17:47.
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