[basneb]

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

 
/*--------------------------------*- 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;
            }
        );
    }
);
 
// ************************************************************************* //

[basneb]

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.

[jiujiumin]

i want to what the prime2mean means ？
thanks