Unified set of tools for building objects for lumped and consistent L2 projects between bases.
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| | L2Projection () |
| | Constructor.
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| void | setup (const panzer::BasisDescriptor &targetBasis, const panzer::IntegrationDescriptor &integrationDescriptor, const Teuchos::RCP< const Teuchos::MpiComm< int > > &comm, const Teuchos::RCP< const panzer::ConnManager > &connManager, const std::vector< std::string > &elementBlockNames, const Teuchos::RCP< panzer::WorksetContainer > worksetContainer=Teuchos::null) |
| | Setup base objects for L2 Projections - requires target scalar basis and creates worksets if not supplied by user.
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| void | useBasisValues (const std::map< std::string, Teuchos::RCP< panzer::BasisValues2< double > > > &map_eblock_to_bv) |
| | Override using the panzer::WorksetContainer and instead use the registered BasisValues object.
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| Teuchos::RCP< panzer::GlobalIndexer > | getTargetGlobalIndexer () const |
| | Returns the target global indexer. Will be null if setup() has not been called.
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| Teuchos::RCP< Tpetra::CrsMatrix< double, panzer::LocalOrdinal, panzer::GlobalOrdinal, Tpetra::KokkosCompat::KokkosDeviceWrapperNode< PHX::Device > > > | buildMassMatrix (bool use_lumping=false, const std::unordered_map< std::string, double > *elementBlockMultipliers=nullptr) |
| | Allocates, fills and returns a mass matrix for L2 projection onto a target basis.
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| Teuchos::RCP< Tpetra::MultiVector< double, panzer::LocalOrdinal, panzer::GlobalOrdinal, Tpetra::KokkosCompat::KokkosDeviceWrapperNode< PHX::Device > > > | buildInverseLumpedMassMatrix () |
| | Allocates, fills and returns a Tpetra::MultiVector containing the inverse lumped mass matrix values as computed via Hinton 1976.
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| Teuchos::RCP< Tpetra::CrsMatrix< double, panzer::LocalOrdinal, panzer::GlobalOrdinal, Tpetra::KokkosCompat::KokkosDeviceWrapperNode< PHX::Device > > > | buildRHSMatrix (const panzer::GlobalIndexer &sourceDOFManager, const Teuchos::RCP< const Tpetra::Map< panzer::LocalOrdinal, panzer::GlobalOrdinal, Tpetra::KokkosCompat::KokkosDeviceWrapperNode< PHX::Device > > > &ownedSourceMap, const std::string &sourceFieldName, const panzer::BasisDescriptor &sourceBasisDescriptor, const int vectorOrGradientDirectionIndex=-1) |
| | Allocates, fills and returns a rectangular matrix for L2 projection of a scalar field, one dimension of gradient (for hgrad basis), or one dimension of a vector field onto the target scalar basis. If you wish to project all values of a vector field or all the gradients of a scalar field, then you will need three separate RHS matrices to form the RHS for each independently. The vectors must be independent Tpetra vectors to solve multiple right hand sides with the linear solver.
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Unified set of tools for building objects for lumped and consistent L2 projects between bases.
Definition at line 43 of file Panzer_L2Projection.hpp.
| Teuchos::RCP< Tpetra::MultiVector< double, panzer::LocalOrdinal, panzer::GlobalOrdinal, panzer::TpetraNodeType > > panzer::L2Projection::buildInverseLumpedMassMatrix |
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Allocates, fills and returns a Tpetra::MultiVector containing the inverse lumped mass matrix values as computed via Hinton 1976.
References:
[1] E. Hinton, T. Rock and O. C. Zienkiewicz, "A Note
on Mass Lumping and Related Processes in the Finite Element
Method," Earthquake Engineering and Structural Dynamics, 4 (1976), 245-249.
[2] T. J. R. Hughes, "The Finite Element Method: Linear Static
and Dynamic Finite Element Analysis," (1987), Section 7.3.2.
NOTE: This is currently sligtly inefficient in that it temporarily allocates the consistent mass matrix. This saves significant code duplication at the temporary runtime cost of allocating the mass matrix. The temporary matrix is deallocated on exit from this function so it should not be an issue.
- Returns
- Filled inverse lumped mass matrix in a Tpetra::MultiVector (diagonal entries mass matrix)
Definition at line 367 of file Panzer_L2Projection.cpp.
| Teuchos::RCP< Tpetra::CrsMatrix< double, panzer::LocalOrdinal, panzer::GlobalOrdinal, panzer::TpetraNodeType > > panzer::L2Projection::buildRHSMatrix |
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const panzer::GlobalIndexer & |
sourceDOFManager, |
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const Teuchos::RCP< const Tpetra::Map< panzer::LocalOrdinal, panzer::GlobalOrdinal, Tpetra::KokkosCompat::KokkosDeviceWrapperNode< PHX::Device > > > & |
ownedSourceMap, |
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const std::string & |
sourceFieldName, |
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const panzer::BasisDescriptor & |
sourceBasisDescriptor, |
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const int |
vectorOrGradientDirectionIndex = -1 |
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Allocates, fills and returns a rectangular matrix for L2 projection of a scalar field, one dimension of gradient (for hgrad basis), or one dimension of a vector field onto the target scalar basis. If you wish to project all values of a vector field or all the gradients of a scalar field, then you will need three separate RHS matrices to form the RHS for each independently. The vectors must be independent Tpetra vectors to solve multiple right hand sides with the linear solver.
- Parameters
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| [in] | (required) | sourceDOFManager The source dof manger object |
| [in] | (required) | ownedSourceMap The Tpetra Map for the owned source vector |
| [in] | (required) | sourceFieldName The string name of the source field to project |
| [in] | (required) | sourceBasisDescriptor The type of the basis for the source field |
| [in] | (optional) | vectorOrGradientDirectionIndex For vector fields, this is the vector index to project (x,y, or z component). For scalar fields, the default value of -1 results in a projection of the scalar field value. If set to 0 or greater, it is assumed that the gradient of the HGrad field is projected and that this value is the dimension index for the particular gradient (x, y, or z component). |
- Returns
- Alocated and filled Tpetra::CrsMatrix
Definition at line 387 of file Panzer_L2Projection.cpp.
