Stochastic return-to-isotropy model. More...
Public Member Functions | |
TypeName ("stochastic") | |
Runtime type information. More... | |
Stochastic (const dictionary &dict, CloudType &owner) | |
Construct from components. More... | |
Stochastic (const Stochastic< CloudType > &cm) | |
Construct copy. More... | |
virtual autoPtr< IsotropyModel< CloudType > > | clone () const |
Construct and return a clone. More... | |
virtual | ~Stochastic () |
Destructor. More... | |
virtual void | calculate () |
Member Functions. More... | |
Public Member Functions inherited from IsotropyModel< CloudType > | |
TypeName ("isotropyModel") | |
Runtime type information. More... | |
declareRunTimeSelectionTable (autoPtr, IsotropyModel, dictionary,(const dictionary &dict, CloudType &owner),(dict, owner)) | |
Declare runtime constructor selection table. More... | |
IsotropyModel (CloudType &owner) | |
Construct null from owner. More... | |
IsotropyModel (const dictionary &dict, CloudType &owner, const word &type) | |
Construct from components. More... | |
IsotropyModel (const IsotropyModel< CloudType > &cm) | |
Construct a copy. More... | |
virtual | ~IsotropyModel () |
Destructor. More... | |
Public Member Functions inherited from CloudSubModelBase< CloudType > | |
CloudSubModelBase (CloudType &owner) | |
Construct null from owner cloud. More... | |
CloudSubModelBase (CloudType &owner, const dictionary &dict, const word &baseName, const word &modelType, const word &dictExt="Coeffs") | |
Construct from owner cloud without name. More... | |
CloudSubModelBase (const word &modelName, CloudType &owner, const dictionary &dict, const word &baseName, const word &modelType) | |
Construct from owner cloud with name. More... | |
CloudSubModelBase (const CloudSubModelBase< CloudType > &smb) | |
Copy constructor. More... | |
virtual | ~CloudSubModelBase () |
Destructor. More... | |
const CloudType & | owner () const |
Return const access to the owner cloud. More... | |
virtual bool | writeTime () const |
Flag to indicate when to write a property. More... | |
CloudType & | owner () |
Return non-const access to the owner cloud for manipulation. More... | |
virtual void | write (Ostream &os) const |
Write. More... | |
Public Member Functions inherited from subModelBase | |
subModelBase (dictionary &properties) | |
Construct null. More... | |
subModelBase (dictionary &properties, const dictionary &dict, const word &baseName, const word &modelType, const word &dictExt="Coeffs") | |
Construct from components without name. More... | |
subModelBase (const word &modelName, dictionary &properties, const dictionary &dict, const word &baseName, const word &modelType) | |
Construct from components with name. More... | |
subModelBase (const subModelBase &smb) | |
Copy constructor. More... | |
virtual | ~subModelBase () |
Destructor. More... | |
const word & | modelName () const |
Return const access to the name of the sub-model. More... | |
const dictionary & | dict () const |
Return const access to the cloud dictionary. More... | |
const word & | baseName () const |
Return const access to the base name of the sub-model. More... | |
const word & | modelType () const |
Return const access to the sub-model type. More... | |
const dictionary & | coeffDict () const |
Return const access to the coefficients dictionary. More... | |
const dictionary & | properties () const |
Return const access to the properties dictionary. More... | |
virtual bool | defaultCoeffs (const bool printMsg) const |
Returns true if defaultCoeffs is true and outputs on printMsg. More... | |
virtual bool | active () const |
Return the model 'active' status - default active = true. More... | |
virtual void | cacheFields (const bool store) |
Cache dependent sub-model fields. More... | |
template<class Type > | |
Type | getBaseProperty (const word &entryName, const Type &defaultValue=pTraits< Type >::zero) const |
Retrieve generic property from the base model. More... | |
template<class Type > | |
void | getBaseProperty (const word &entryName, Type &value) const |
Retrieve generic property from the base model. More... | |
template<class Type > | |
void | setBaseProperty (const word &entryName, const Type &value) |
Add generic property to the base model. More... | |
template<class Type > | |
void | getModelProperty (const word &entryName, Type &value) const |
Retrieve generic property from the sub-model. More... | |
template<class Type > | |
Type | getModelProperty (const word &entryName, const Type &defaultValue=pTraits< Type >::zero) const |
Retrieve generic property from the sub-model. More... | |
template<class Type > | |
void | setModelProperty (const word &entryName, const Type &value) |
Add generic property to the sub-model. More... | |
void | operator= (const subModelBase &)=delete |
Disallow default bitwise assignment. More... | |
Additional Inherited Members | |
Public Types inherited from CloudSubModelBase< CloudType > | |
typedef CloudType | cloudType |
Type of cloud this model was instantiated for. More... | |
Static Public Member Functions inherited from IsotropyModel< CloudType > | |
static autoPtr< IsotropyModel< CloudType > > | New (const dictionary &dict, CloudType &owner) |
Selector. More... | |
Protected Member Functions inherited from subModelBase | |
bool | inLine () const |
Flag to indicate whether data is/was read in-line. More... | |
Protected Attributes inherited from IsotropyModel< CloudType > | |
autoPtr< TimeScaleModel > | timeScaleModel_ |
Time scale model. More... | |
Protected Attributes inherited from CloudSubModelBase< CloudType > | |
CloudType & | owner_ |
Reference to the cloud. More... | |
Protected Attributes inherited from subModelBase | |
const word | modelName_ |
Name of the sub-model. More... | |
dictionary & | properties_ |
Reference to properties dictionary e.g. for restart. More... | |
const dictionary | dict_ |
Copy of dictionary used during construction. More... | |
const word | baseName_ |
Name of the sub-model base class. More... | |
const word | modelType_ |
Type of the sub-model. More... | |
const dictionary | coeffDict_ |
Coefficients dictionary. More... | |
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 67 of file Stochastic.H.
Stochastic | ( | const dictionary & | dict, |
CloudType & | owner | ||
) |
Construct from components.
Definition at line 32 of file Stochastic.C.
Stochastic | ( | const Stochastic< CloudType > & | cm | ) |
Construct copy.
Definition at line 43 of file Stochastic.C.
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virtual |
Destructor.
Definition at line 54 of file Stochastic.C.
References f(), Foam::log(), rndGen(), Random::sample01(), Foam::sqrt(), x, and y.
Referenced by Stochastic< CloudType >::clone().
TypeName | ( | "stochastic" | ) |
Runtime type information.
|
inlinevirtual |
Construct and return a clone.
Implements IsotropyModel< CloudType >.
Definition at line 91 of file Stochastic.H.
References Stochastic< CloudType >::calculate(), and Stochastic< CloudType >::~Stochastic().
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virtual |
Member Functions.
Calculate velocities
Implements IsotropyModel< CloudType >.
Definition at line 97 of file Stochastic.C.
References AveragingMethod< Type >::add(), AveragingMethod< Type >::average(), dict, Foam::exp(), forAllIter, AveragingMethod< Type >::interpolate(), objectRegistry::lookupObject(), Foam::magSqr(), Foam::max(), mesh, Foam::name(), p, rndGen(), Random::sample01(), Foam::sqrt(), timeName, and x.
Referenced by Stochastic< CloudType >::clone().