zhyang-dev/OpenFOAM-12
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

multiphaseEulerFoam: new functionObject "moments"

Browse Source 
This function calculates integral (integer moments) or mean properties
(mean, variance, standard deviation) of a size distribution computed with
multiphaseEulerFoam. It has to be run with multiphaseEulerFoam, either
at run-time or with -postProcess. It will not work with the postProcess
utility.

The following function object specification for example returns the first
moment of the volume-based number density function which is equivalent to
the phase fraction of the particulate phase:

    moments
    {
        type                moments;
        libs                ("libmultiphaseEulerFoamFunctionObjects.so");
        executeControl      timeStep;
        writeControl        writeTime;
        populationBalance   bubbles;
        momentType          integerMoment;
        coordinateType      volume;
        order               1;
    }

The same can be achieved using a packaged function:

    #includeFunc moments
    (
        populationBalance=bubbles,
        momentType=integerMoment,
        coordinateType=volume,
        order=1,
        funcName=moments
    )

Or on the command line:

    multiphaseEulerFoam -postProcess -func "
        moments
        (
            populationBalance=bubbles,
            momentType=integerMoment,
            coordinateType=volume,
            order=1,
            funcName=moments
        )"

Patch contributed by Institute of Fluid Dynamics,
Helmholtz-Zentrum Dresden - Rossendorf (HZDR)
This commit is contained in:
Will Bainbridge
2022-01-07 08:42:33 +00:00
parent 07c43e9c5d
commit 36c565b9bf
9 changed files with 1291 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
test/multiphase/multiphaseEulerFoam/populationBalance/drift/Allclean
View File

@ -6,6 +6,6 @@ cd "${0%/*}" || exit 1
# Source clean functions
. $WM_PROJECT_DIR/bin/tools/CleanFunctions
cleanCase && rm -f moments.eps numberDensity.eps
cleanCase && rm -rf *.eps 0/d.air 0/uniform/ 0/integerMoment*
#------------------------------------------------------------------------------

37
test/multiphase/multiphaseEulerFoam/populationBalance/drift/system/controlDict
View File

@ -28,7 +28,7 @@ deltaT 0.01;
writeControl runTime;
writeInterval 6;
writeInterval 0.2;
purgeWrite 0;
@ -68,21 +68,30 @@ functions
densityFunction yes;
}
moments
{
type sizeDistribution;
functionObjectLibs ("libmultiphaseEulerFoamFunctionObjects.so");
#includeFunc moments
(
populationBalance=bubbles,
momentType=integerMoment,
coordinateType=volume,
order=1
)
writeControl runTime;
writeInterval 0.1;
#includeFunc moments
(
populationBalance=bubbles,
momentType=integerMoment,
coordinateType=volume,
order=0
)
setFormat raw;
populationBalance bubbles;
functionType moments;
coordinateType volume;
maxOrder 1;
}
#includeFunc probes
(
funcName=probes,
points=((0.5 0.5 0.5)),
integerMoment0(N,v).bubbles,
integerMoment1(N,v).bubbles,
writeControl=writeTime
)
}
// ************************************************************************* //

4
test/multiphase/multiphaseEulerFoam/populationBalance/drift/validation/createGraphs
View File

@ -36,9 +36,9 @@ gnuplot<<EOF
set yrange [0.5:3.5]
set key top left
plot '../postProcessing/moments/0/moments.dat' every 2 u 1:(\$2/0.02186682) w p pt 5 lc rgb 'black' t 'j=0 (Numbers), numerical',\
plot '../postProcessing/probes/0/integerMoment0(N,v).bubbles' u 1:(\$2/0.02186682) w p pt 5 lc rgb 'black' t 'j=0 (Numbers), numerical',\
'<printf "0 1\n6 1\n"' w l lc rgb 'black' t 'j=0 (Numbers), exact',\
'../postProcessing/moments/0/moments.dat' u 1:(\$3/0.066553351) every 2 w p pt 6 lc rgb 'black' t 'j=1 (Volume), numerical',\
'../postProcessing/probes/0/integerMoment1(N,v).bubbles' u 1:(\$2/0.066553351) w p pt 6 lc rgb 'black' t 'j=1 (Volume), numerical',\
'<printf "0 1\n6 3\n"' w l dt 2 lc rgb 'black' t 'j=1 (Volume), exact'
EOF