e08128781e
Description
Evaluates and writes the turbulence intensity field 'I'.
The turbulence intensity field 'I' is the root-mean-square of the turbulent
velocity fluctuations normalised by the local velocity magnitude:
\f[
I \equiv \frac{\sqrt{\frac{2}{3}\, k}}{U}
\f]
To avoid spurious extrema and division by 0 I is limited to 1 where the
velocity magnitude is less than the turbulent velocity fluctuations.
Example of function object specification:
\verbatim
functions
{
.
.
.
turbulenceIntensity
{
type turbulenceIntensity;
libs ("libfieldFunctionObjects.so");
}
.
.
.
}
\endverbatim
or using the standard configuration file:
\verbatim
functions
{
.
.
.
#includeFunc turbulenceIntensity
.
.
.
}
\endverbatim
20 lines
750 B
C++
20 lines
750 B
C++
/*--------------------------------*- C++ -*----------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Web: www.OpenFOAM.org
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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Description
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Calculates and writes the turbulence intensity field I.
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\*---------------------------------------------------------------------------*/
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type turbulenceIntensity;
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libs ("libfieldFunctionObjects.so");
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executeControl writeTime;
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writeControl writeTime;
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// ************************************************************************* //
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