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-   -   Volume of fluid contained in a cell (https://www.cfd-online.com/Forums/openfoam-solving/125961-volume-fluid-contained-cell.html)

Sujatha November 5, 2013 06:28
Volume of fluid contained in a cell
 
Hi all
Can anybody please let me know how to find the volume of fluid contained in a cell or domain as a whole.
Am working in interFoam and want to find the volume of fluid in the domain at different time.

Any hint will be a privilege.
Thanks in advance
Regards
Sujatha

JNSN November 5, 2013 08:55
Hi Sujatha,

output of interFoam gives you "Phase-1 volume fraction". This value multplied by the total volume of the domain (e.g. from checkMesh) gives the volume of phase-1

Hope this helps,
Jan

Sujatha November 5, 2013 11:46
Thank You , sir,JNSN for your quick and worthy reply.

But since I am a newbie to CFD and OpenFOAM , am still confused. Will the output log file be giving the volume fraction of a single cell? And in my case of "damBreak" initially all the cells won't have liquid phase but only a column of water at one end of the domain.

Also, volume fraction of phase1 remains almost same value for me through out ma simulation.

I will be grateful if you could kindly go through the above issues. Please excuse if these are a sort of blunders, as it's due to my ignorance.

Thanks again
Regards
Sujatha

JNSN November 5, 2013 12:20
No, the solver output gives the volume fraction in the whole domain. If you are interested in the volume fraction in a single cell, the easiest way may is with a probe
Code:
functions
(
    probe
    {
        type probes;
        probeLocations ((x y z));
        fields (alpha1);
    }
);
This gives you the volume fraction at a specified points.

Best regards,
Jan

Sujatha November 5, 2013 22:19
This helps sir, JNSN.

Thanks a million.


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