36c565b9bf
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)
27 lines
1.1 KiB
C++
27 lines
1.1 KiB
C++
/*--------------------------------*- C++ -*----------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration | Website: https://openfoam.org
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\\ / A nd | Version: dev
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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Description
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Calculates the blended interfacial forces acting on a given phase,
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i.e. drag, virtual mass, lift, wall-lubrication and turbulent
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dispersion. Note that it works only in solver post processing mode and in
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combination with multiphaseEulerFoam. For a simulation involving more than
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two phases, the accumulated force is calculated by looping over all
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phasePairs the phase is a part of.
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\*---------------------------------------------------------------------------*/
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type phaseForces;
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libs ("libmultiphaseEulerFoamFunctionObjects.so");
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phase <phaseName>;
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executeControl writeTime;
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writeControl writeTime;
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// ************************************************************************* //
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