Q.C
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3 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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8 Copyright (C) 2013-2016 OpenFOAM Foundation
9 Copyright (C) 2019-2020 OpenCFD Ltd.
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15 under the terms of the GNU General Public License as published by
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27\*---------------------------------------------------------------------------*/
28
29#include "Q.H"
30#include "fvcGrad.H"
32
33// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
34
35namespace Foam
36{
37namespace functionObjects
38{
41}
42}
43
44
45// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
46
47bool Foam::functionObjects::Q::calc()
48{
49 if (foundObject<volVectorField>(fieldName_))
50 {
51 const volVectorField& U = lookupObject<volVectorField>(fieldName_);
52 const tmp<volTensorField> tgradU(fvc::grad(U));
53 const volTensorField& gradU = tgradU();
54
55 return store
56 (
58 0.5*(sqr(tr(gradU)) - tr(((gradU) & (gradU))))
59 );
60 }
61
62 return false;
63}
64
65
66// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
67
69(
70 const word& name,
71 const Time& runTime,
72 const dictionary& dict
73)
74:
76{
77 setResultName(typeName, "U");
78}
79
80
81// ************************************************************************* //
Macros for easy insertion into run-time selection tables.
#define addToRunTimeSelectionTable(baseType, thisType, argNames)
Add to construction table with typeName as the key.
Class to control time during OpenFOAM simulations that is also the top-level objectRegistry.
Definition: Time.H:80
A list of keyword definitions, which are a keyword followed by a number of values (eg,...
Definition: dictionary.H:126
Abstract base-class for Time/database function objects.
Computes the second invariant of the velocity gradient tensor .
Definition: Q.H:153
Intermediate class for handling field expression function objects (e.g. blendingFactor etc....
word resultName_
Name of result field.
word fieldName_
Name of field to process.
void setResultName(const word &typeName, const word &defaultArg)
Set the name of result field.
bool store(word &fieldName, const tmp< ObjectType > &tfield, bool cacheable=false)
Store the field in the (sub) objectRegistry under the given name.
A class for handling words, derived from Foam::string.
Definition: word.H:68
#define defineTypeNameAndDebug(Type, DebugSwitch)
Define the typeName and debug information.
Definition: className.H:121
U
Definition: pEqn.H:72
engineTime & runTime
Calculate the gradient of the given field.
tmp< GeometricField< typename outerProduct< vector, Type >::type, fvPatchField, volMesh > > grad(const GeometricField< Type, fvsPatchField, surfaceMesh > &ssf)
Definition: fvcGrad.C:54
Namespace for OpenFOAM.
GeometricField< vector, fvPatchField, volMesh > volVectorField
Definition: volFieldsFwd.H:83
dimensionedScalar tr(const dimensionedSphericalTensor &dt)
dimensionedSymmTensor sqr(const dimensionedVector &dv)
GeometricField< tensor, fvPatchField, volMesh > volTensorField
Definition: volFieldsFwd.H:87
word name(const expressions::valueTypeCode typeCode)
A word representation of a valueTypeCode. Empty for INVALID.
Definition: exprTraits.C:59
dictionary dict