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February 22, 2010, 09:29 |
rms value with transientSimpleOodles
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#1 |
New Member
Bastian Nebenfuehr
Join Date: Feb 2010
Location: Sverige
Posts: 27
Rep Power: 16 |
Hello everybody,
I'm carrying out some LES calculations with the solver transientSimpleOodles on a SUV-like shaped geometry in a windtunnel and I want to evaluate the rms values of pressure at the rearview mirrors. I implemented the prime2Mean function in my controlDict and, at least, I do not get any error-messages and a file named pPrime2Mean as an output. Thus I conclude that the function works in principle. However, if I check the results in EnSight, I do not get (in my opinion) reasonable results for pPrime2Mean, whereas p and pMean look normal and I get reasonable values for them (dynamic pressure). So, now I'm wondering, if my implementation of the prime2Mean function is wrong or so. In the following I attached the controlDict with my implementation. Best regards, Bastian Code:
/*--------------------------------*- C++ -*----------------------------------*\ | ========= | | | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \\ / O peration | Version: 1.5 | | \\ / A nd | Web: http://www.OpenFOAM.org | | \\/ M anipulation | | \*---------------------------------------------------------------------------*/ FoamFile { version 2.0; format ascii; class dictionary; object controlDict; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // application transientSimpleOodles; startFrom startTime; startTime 0.1; stopAt endTime; endTime 0.42; deltaT 2e-05; writeControl timeStep; writeInterval 5000; purgeWrite 0; writeFormat ascii; writePrecision 6; writeCompression uncompressed; timeFormat general; timePrecision 6; runTimeModifiable yes; functions ( probes1 { // Type of functionObject type probes; // Where to load it from (if not already in solver) functionObjectLibs ("libsampling.so"); // Locations to be probed. runTime modifiable! probeLocations ( (2.726753 -0.801799 1.788444) (2.744515 -0.778461 1.862935) (2.755995 -0.761528 1.908716) (2.796776 -0.806112 1.791699) (2.813934 -0.781613 1.866063) (2.824675 -0.764889 1.911166) (2.999108 -0.814479 1.802093) (3.015712 -0.790372 1.876570) ); // Fields to be probed. runTime modifiable! fields ( p ); } fieldAverage1 { // Type of functionObject type fieldAverage; // Where to load it from (if not already in solver) functionObjectLibs ("libfieldAverage.so"); // Fields to be averaged - runTime modifiable fields ( U { mean on; prime2Mean on; base time; } p { mean on; prime2Mean on; base time; } ); } ); // ************************************************************************* // |
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February 23, 2010, 06:14 |
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#2 |
New Member
Bastian Nebenfuehr
Join Date: Feb 2010
Location: Sverige
Posts: 27
Rep Power: 16 |
Hi everybody,
something I forgot: Is pPrime2Mean actually the RMS value squared or is it something else? I was checking the source code for it, but I am not sure that it is the same. Best regards, Bastian. |
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July 13, 2013, 09:22 |
i want to what the prime2mean means ?
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#3 |
New Member
jiujiumin
Join Date: May 2013
Posts: 9
Rep Power: 12 |
i want to what the prime2mean means ?
thanks |
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