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Resolving Velocity Magnitudes with Probes

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Old   August 9, 2010, 16:51
Default Resolving Velocity Magnitudes with Probes
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Adam James
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Hi again. I wish to use OpenFOAM to calculate velocity magnitudes in the flow field with respect to time however I have only been able to code for the two respective points below to resolve the u, v and w components which I would rather not have to post-process. I think that the magnitudes need to be calculated and then magU used but I haven't seen this explicitly coded elsewhere on some google searches. Any help would be appreciated, if I haven't explained myself clearly enough then let me know!

Thanks.


Code:
 FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    location    "system";
    object      controlDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

application     icoFoam;

startFrom       startTime;

startTime       0;

stopAt          endTime;

endTime         0.02;

deltaT          0.0001;

writeControl    timeStep;

writeInterval   10;

purgeWrite      0;

writeFormat     ascii;

writePrecision  12;

writeCompression uncompressed;

timeFormat      general;

timePrecision   12;

runTimeModifiable yes;

libs ( "libOpenFOAM.so" "libgroovyBC.so" ) ;

functions
{
	probes
	{
		type			probes;
		functionObjectLibs 	("libsampling.so");
		enabled 		true;
		outputControl		timeStep;
		outputInterval 		10;
		probeLocations
		(
			( 1 10 0.5 )
			( 2 2  0.5 )
		);
	fields
		(
		U
		);
	}
}
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Old   August 9, 2010, 17:56
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Srinath Madhavan (a.k.a pUl|)
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There was a utility called magU in OpenFOAM. Not sure whether it is still around. Just try typing magU and see what happens. If it does exist, then either magU or it's source should tell you how to proceed. Good Luck!
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Old   August 9, 2010, 18:16
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Adam James
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Quote:
Originally Posted by msrinath80 View Post
There was a utility called magU in OpenFOAM. Not sure whether it is still around. Just try typing magU and see what happens. If it does exist, then either magU or it's source should tell you how to proceed. Good Luck!
Thanks, I tried that already but it seems to ignore the magU and persists as though it was U. I was thinking that this may have been because I haven't correctly calculated the magU's beforehand though!
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