[xurenyi]

I can find nothing about turbulenceModelConstructorTable inturbulenceModel.C in documentation. What is it and where did it be defined?

[alexeym]

Hi,

turbulenceModel.C:

defineRunTimeSelectionTable(turbulenceModel, turbulenceModel);

this macro is defined in src/OpenFOAM/db/runTimeSelection/construction/runTimeSelectionTables.H:

// define run-time selection table
#define defineRunTimeSelectionTable\
(baseType,argNames)                                                           \
                                                                              \
    defineRunTimeSelectionTablePtr(baseType,argNames);                        \
    defineRunTimeSelectionTableConstructor(baseType,argNames);                \
    defineRunTimeSelectionTableDestructor(baseType,argNames)

These macros (defineRunTimeSelectionTablePtr, defineRunTimeSelectionTableConstructor, defineRunTimeSelectionTableDestructor) are also defined in runTimeSelectionTables.H, they define turbulenceModelConstructorTable.

[xurenyi]

thank you very much

I studied the file 'runTimeSelectionTables.H'

If the 'turbulenceProperties' file in the 'constant' folder is written as:
simulationType LESModel;

and the 'LESProperties' is written as:
LESModel oneEqEddy;

Then in the 'turbulenceModel.C', the modelType is valued as 'LESModel'.

Through
turbulenceModelConstructorTable::iterator cstrIter = turbulenceModelConstructorTablePtr_->find(modelType);
in 'turbulenceModel.C', the derived class LESModel is instantiated.

BUT, neither LESModel.C nor .H was included in turbulenceModel.C or .H, how to get the the derived class?

Usually, when the main file need to use turbulenceModel, then turbulenceModel file is included in the main file. Now, turbulenceModel need to use LESModel, should LESModel file be included in turbulenceModel file? Otherwise, how to instantiate the derived class LESModel in turbulenceModel?

BTW,
where and how is the class add##argNames##ConstructorToTable described in 'runTimeSelectionTables.H' used?

[alexeym]

Well, I guess it more-or-less like this:

1. LESModel.H include turbulenceModel.H (where class turbulenceModel is defined)

2. LESModel.C has the line

addToRunTimeSelectionTable(turbulenceModel, LESModel, turbulenceModel);

which will be preprocessed into (though my preprocessing capabilities maybe worse than of g++, you should take a look at the preprocessed code yourself to be sure):

turbulenceModel::addturbulenceModelConstructorToTable< LESModel >           addLESModelturbulenceModelConstructorToturbulenceModelTable_

i.e. it will modify turbulenceModel class, adding to it knowledge of LESModel. Almost the same lines are in the files which define concrete LES models, i.e. in Smagorinsky there is a line:

addToRunTimeSelectionTable(LESModel, Smagorinsky, dictionary);

then code look through the constructor table like this:

    dictionaryConstructorTable::iterator cstrIter =
        dictionaryConstructorTablePtr_->find(modelType);

and if constructor is found (actually a pointer to the constructor), it is used in this way:

    return autoPtr<LESModel>
    (
        cstrIter()(U, phi, transport, turbulenceModelName)
    );

[xurenyi]

But in first how to reach the code:

addToRunTimeSelectionTable(turbulenceModel, LESModel, turbulenceModel)

in LESModel.C from turbulenceModel.C which is included in main file of solvers.