Public Member Functions | List of all members
basicSubGrid Class Reference

Basic sub-grid obstacle flame-wrinkling enhancement factor model. Details supplied by J Puttock 2/7/06. More...

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Public Member Functions

 TypeName ("basicSubGrid")
 Runtime type information. More...
 
 basicSubGrid (const dictionary &XiEqProperties, const psiuMulticomponentThermo &thermo, const compressible::RASModel &turbulence, const volScalarField &Su)
 Construct from components. More...
 
 basicSubGrid (const basicSubGrid &)=delete
 Disallow default bitwise copy construction. More...
 
virtual ~basicSubGrid ()
 Destructor. More...
 
virtual tmp< volScalarField > XiEq () const
 Return the flame-wrinkling XiEq. More...
 
virtual bool read (const dictionary &XiEqProperties)
 Update properties from given dictionary. More...
 
void operator= (const basicSubGrid &)=delete
 Disallow default bitwise assignment. More...
 
- Public Member Functions inherited from XiEqModel
 TypeName ("XiEqModel")
 Runtime type information. More...
 
 declareRunTimeSelectionTable (autoPtr, XiEqModel, dictionary,(const dictionary &XiEqProperties, const psiuMulticomponentThermo &thermo, const compressible::RASModel &turbulence, const volScalarField &Su),(XiEqProperties, thermo, turbulence, Su))
 
 XiEqModel (const dictionary &XiEqProperties, const psiuMulticomponentThermo &thermo, const compressible::RASModel &turbulence, const volScalarField &Su)
 Construct from components. More...
 
 XiEqModel (const XiEqModel &)=delete
 Disallow default bitwise copy construction. More...
 
virtual ~XiEqModel ()
 Destructor. More...
 
tmp< volScalarField > calculateSchelkinEffect (const scalar) const
 Return the sub-grid Schelkin effect. More...
 
void writeFields () const
 Write fields. More...
 
void operator= (const XiEqModel &)=delete
 Disallow default bitwise assignment. More...
 

Additional Inherited Members

- Static Public Member Functions inherited from XiEqModel
static autoPtr< XiEqModel > New (const dictionary &XiEqProperties, const psiuMulticomponentThermo &thermo, const compressible::RASModel &turbulence, const volScalarField &Su)
 Return a reference to the selected XiEq model. More...
 
- Protected Attributes inherited from XiEqModel
dictionary XiEqModelCoeffs_
 Dictionary. More...
 
const psiuMulticomponentThermo & thermo_
 Thermo. More...
 
const compressible::RASModel & turbulence_
 Turbulence. More...
 
const volScalarField & Su_
 Laminar burning velocity. More...
 

Detailed Description

Basic sub-grid obstacle flame-wrinkling enhancement factor model. Details supplied by J Puttock 2/7/06.

Sub-grid flame area generation

$ n = N - \hat{\dwea{\vec{U}}}.n_{s}.\hat{\dwea{\vec{U}}} $ $ n_{r} = \sqrt{n} $

where:

$ \hat{\dwea{\vec{U}}} = \dwea{\vec{U}} / \vert \dwea{\vec{U}} \vert $

$ b = \hat{\dwea{\vec{U}}}.B.\hat{\dwea{\vec{U}}} / n_{r} $

where:

$ B $ is the file "B".

$ N $ is the file "N".

$ n_{s} $ is the file "ns".

The flame area enhancement factor $ \Xi_{sub} $ is expected to approach:

\[ \Xi_{{sub}_{eq}} = 1 + max(2.2 \sqrt{b}, min(0.34 \frac{\vert \dwea{\vec{U}} \vert}{{\vec{U}}^{'}}, 1.6)) \times min(\frac{n}{4}, 1) \]

Source files

Definition at line 81 of file basicXiSubXiEq.H.

Constructor & Destructor Documentation

◆ basicSubGrid() [1/2]

basicSubGrid ( const dictionary &  XiEqProperties,
const psiuMulticomponentThermo &  thermo,
const compressible::RASModel &  turbulence,
const volScalarField &  Su 
)

Construct from components.

Definition at line 43 of file basicXiSubXiEq.C.

◆ basicSubGrid() [2/2]

basicSubGrid ( const basicSubGrid &  )
delete

Disallow default bitwise copy construction.

◆ ~basicSubGrid()

~basicSubGrid ( )
virtual

Destructor.

Definition at line 72 of file basicXiSubXiEq.C.

Member Function Documentation

◆ TypeName()

TypeName ( "basicSubGrid"  )

Runtime type information.

◆ XiEq()

Foam::tmp< Foam::volScalarField > XiEq ( ) const
virtual

Return the flame-wrinkling XiEq.

Implements XiEqModel.

Definition at line 78 of file basicXiSubXiEq.C.

References b, TimePaths::constant(), Foam::e, objectRegistry::lookupObject(), Foam::mag(), Foam::max(), fvMesh::mesh(), Foam::min(), n, IOobject::NO_READ, IOobject::NO_WRITE, Foam::pow(), GeometricField< Type, PatchField, GeoMesh >::primitiveFieldRef(), Foam::sqrt(), fvMesh::time(), U, fvMesh::V(), and Foam::Zero.

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◆ read()

bool read ( const dictionary &  XiEqProperties)
virtual

Update properties from given dictionary.

Implements XiEqModel.

Definition at line 145 of file basicXiSubXiEq.C.

References XiEqModel::read().

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◆ operator=()

void operator= ( const basicSubGrid &  )
delete

Disallow default bitwise assignment.

The documentation for this class was generated from the following files: