[Yage]

Hello,

I would like to extract the flow velocity at a given location after the simulation.

Is there any way to achieve that instead of re-running the simulation with probes function in controldict?

Regards,
Yage

[piu58]

- run writeCellCentres for the folder of your result (you may choose write CellCentres -latestTime)
- "glue" the ccx, ccy, ccz and U files with paste: paste -d ' ' ccx ccy ccz U > myresult

[kera]

Originally Posted by Yage

Hello,

I would like to extract the flow velocity at a given location after the simulation.

Is there any way to achieve that instead of re-running the simulation with probes function in controldict?

Regards,
Yage

If you need to extract field information at a particular/defined location then you can use
the command:

probeLocations

for which you need to define probesDict in your "case/system" folder, see the sample below:

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  2.3.1                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version         2.0;
    format          ascii;
    class           dictionary;
    location        system;
    object          probesDict;
}

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //


// Fields to be probed. runTime modifiable!
fields
(
    U T 
);

// Locations to be probed. runTime modifiable!
probeLocations
(

    (x1 y1 z1) // locaiton 1 
    (x2 y2 z2) // locaiton 2


);

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

hope this helps!

Regards,
Ricky

[Joshua14]

Another way you can do this is by utilizing slices in Paraview. You can do a crinkle slice in the x, y, and z direction. This will give a single cell from your domain. With that you can save data or collect what ever data you have from your saved time steps without rerunning the simulation for that specific cell.

Joshua