Stochastic return-to-isotropy model. More...
#include <Stochastic.H>
Public Member Functions | |
| TypeName ("stochastic") | |
| Runtime type information. | |
| Stochastic (const dictionary &dict, CloudType &owner) | |
| Construct from components. | |
| Stochastic (const Stochastic< CloudType > &cm) | |
| Construct copy. | |
| virtual autoPtr< IsotropyModel< CloudType > > | clone () const |
| Construct and return a clone. | |
| virtual | ~Stochastic () |
| Destructor. | |
| virtual void | calculate () |
| Member Functions. | |
| Public Member Functions inherited from IsotropyModel< CloudType > | |
| TypeName ("isotropyModel") | |
| Runtime type information. | |
| declareRunTimeSelectionTable (autoPtr, IsotropyModel, dictionary,(const dictionary &dict, CloudType &owner),(dict, owner)) | |
| Declare runtime constructor selection table. | |
| IsotropyModel (CloudType &owner) | |
| Construct null from owner. | |
| IsotropyModel (const dictionary &dict, CloudType &owner, const word &type) | |
| Construct from components. | |
| IsotropyModel (const IsotropyModel< CloudType > &cm) | |
| Construct a copy. | |
| virtual | ~IsotropyModel () |
| Destructor. | |
| Public Member Functions inherited from CloudSubModelBase< CloudType > | |
| CloudSubModelBase (CloudType &owner) | |
| Construct null from owner cloud. | |
| CloudSubModelBase (CloudType &owner, const dictionary &dict, const word &baseName, const word &modelType, const word &dictExt="Coeffs") | |
| Construct from owner cloud without name. | |
| CloudSubModelBase (const word &modelName, CloudType &owner, const dictionary &dict, const word &baseName, const word &modelType) | |
| Construct from owner cloud with name. | |
| CloudSubModelBase (const CloudSubModelBase< CloudType > &smb) | |
| Construct as copy. | |
| virtual | ~CloudSubModelBase ()=default |
| Destructor. | |
| const CloudType & | owner () const |
| Return const access to the owner cloud. | |
| virtual bool | writeTime () const |
| Flag to indicate when to write a property. | |
| virtual fileName | localPath () const |
| Output directory. | |
| CloudType & | owner () |
| Return non-const access to the owner cloud for manipulation. | |
| virtual void | info () |
| Write to info. | |
| virtual void | write (Ostream &os) const |
| Write to os. | |
| Public Member Functions inherited from subModelBase | |
| subModelBase (dictionary &properties) | |
| Construct null. | |
| subModelBase (dictionary &properties, const dictionary &dict, const word &baseName, const word &modelType, const word &dictExt="Coeffs") | |
| Construct from components without name. | |
| subModelBase (const word &modelName, dictionary &properties, const dictionary &dict, const word &baseName, const word &modelType) | |
| Construct from components with name. | |
| subModelBase (const subModelBase &smb) | |
| Construct as copy. | |
| virtual | ~subModelBase ()=default |
| Destructor. | |
| const word & | modelName () const |
| Return const access to the name of the sub-model. | |
| const dictionary & | dict () const |
| Return const access to the cloud dictionary. | |
| const word & | baseName () const |
| Return const access to the base name of the sub-model. | |
| const word & | modelType () const |
| Return const access to the sub-model type. | |
| const dictionary & | coeffDict () const |
| Return const access to the coefficients dictionary. | |
| const dictionary & | properties () const |
| Return const access to the properties dictionary. | |
| virtual bool | defaultCoeffs (const bool printMsg) const |
| Returns true if defaultCoeffs is true and outputs on printMsg. | |
| virtual bool | active () const |
| Return the model 'active' status - default active = true. | |
| virtual void | cacheFields (const bool store) |
| Cache dependent sub-model fields. | |
| template<class Type> | |
| Type | getBaseProperty (const word &entryName, const Type &defaultValue=Type(Zero)) const |
| Retrieve generic property from the base model. | |
| template<class Type> | |
| void | getBaseProperty (const word &entryName, Type &value) const |
| Retrieve generic property from the base model. | |
| template<class Type> | |
| void | setBaseProperty (const word &entryName, const Type &value) |
| Add generic property to the base model. | |
| bool | getModelDict (const word &entryName, dictionary &dict) const |
| Retrieve dictionary, return true if set. | |
| template<class Type> | |
| bool | getModelProperty (const word &entryName, Type &value) const |
| Retrieve generic property from the sub-model. | |
| template<class Type> | |
| Type | getModelProperty (const word &entryName, const Type &defaultValue=Type(Zero)) const |
| Retrieve generic property from the sub-model. | |
| template<class Type> | |
| void | setModelProperty (const word &entryName, const Type &value) |
| Add generic property to the sub-model. | |
Additional Inherited Members | |
| Public Types inherited from CloudSubModelBase< CloudType > | |
| typedef CloudType | cloudType |
| Type of cloud this model was instantiated for. | |
| Static Public Member Functions inherited from IsotropyModel< CloudType > | |
| static autoPtr< IsotropyModel< CloudType > > | New (const dictionary &dict, CloudType &owner) |
| Selector. | |
| Public Attributes inherited from subModelBase | |
| bool | log |
| Flag to write log into Info. | |
| Protected Member Functions inherited from subModelBase | |
| bool | inLine () const |
| Flag to indicate whether data is/was read in-line. | |
| Protected Attributes inherited from IsotropyModel< CloudType > | |
| autoPtr< TimeScaleModel > | timeScaleModel_ |
| Time scale model. | |
| Protected Attributes inherited from CloudSubModelBase< CloudType > | |
| CloudType & | owner_ |
| Reference to the cloud. | |
| Protected Attributes inherited from subModelBase | |
| const word | modelName_ |
| Name of the sub-model. | |
| dictionary & | properties_ |
| Reference to properties dictionary e.g. for restart. | |
| const dictionary | dict_ |
| Copy of dictionary used during construction. | |
| const word | baseName_ |
| Name of the sub-model base class. | |
| const word | modelType_ |
| Type of the sub-model. | |
| const dictionary | coeffDict_ |
| Coefficients dictionary. | |
Stochastic return-to-isotropy model.
Particle velocities are modified by sampling a gaussian-plus-delta distribution, which depends on a time-scale. This randomises some particle velocities whilst leaving others unchanged. The lower the value of the time-scale, the greater the proportion of particle velocities affected.
A correction step is performed at the end to ensure that the model conserves both momentum and granular temperature.
Reference:
"Inclusion of collisional return-to-isotropy in the MP-PIC method"
P O'Rourke and D Snider
Chemical Engineering Science
Volume 80, Issue 0, Pages 39-54, December 2012
Definition at line 68 of file Stochastic.H.
| Stochastic | ( | const dictionary & | dict, |
| CloudType & | owner ) |
Construct from components.
Definition at line 27 of file Stochastic.C.
References subModelBase::dict(), Foam::GlobalIOList< Tuple2< scalar, vector > >::typeName, IsotropyModel< CloudType >::IsotropyModel(), and CloudSubModelBase< CloudType >::owner().
Referenced by clone(), Stochastic(), and TypeName().
Construct copy.
Definition at line 38 of file Stochastic.C.
References IsotropyModel< CloudType >::IsotropyModel(), and Stochastic().
|
virtual |
Destructor.
Definition at line 50 of file Stochastic.C.
| TypeName | ( | "stochastic" | ) |
Runtime type information.
References subModelBase::dict(), CloudSubModelBase< CloudType >::owner(), and Stochastic().
|
inlinevirtual |
Construct and return a clone.
Implements IsotropyModel< CloudType >.
Definition at line 104 of file Stochastic.H.
References Stochastic().
|
virtual |
Member Functions.
Calculate velocities
Implements IsotropyModel< CloudType >.
Definition at line 93 of file Stochastic.C.
References AveragingMethod< Type >::add(), AveragingMethod< Type >::average(), dict, Foam::exp(), AveragingMethod< Type >::interpolate(), Foam::magSqr(), Foam::max(), mesh, name, AveragingMethod< Type >::New(), CloudSubModelBase< CloudType >::owner(), p, rndGen, IOobject::scopedName(), Foam::sqrt(), timeName, IsotropyModel< CloudType >::timeScaleModel_, and x.
1.16.1