Dune::ACFem::DirichletConstraints< JacobianOperator, BoundaryValues, Indicator > Class Template Reference

Implementation of Dirichlet constraints. More...

#include <dune/acfem/operators/constraints/dirichletconstraints.hh>

Collaboration diagram for Dune::ACFem::DirichletConstraints< JacobianOperator, BoundaryValues, Indicator >:

Public Types
typedef DiscreteFunctionSpaceType::GridType	GridType
	type of grid

Public Member Functions
void	rebuild () const
	Rebuild everything in case the sequence number of the underlying space has changed, i.e. More...
void	rebuildValues ()
	Interpolate the Dirichlet values in any case, but leave slave-DoFs as is if nothing changed.
void	jacobian (const DiscreteFunctionType &u, JacobianOperatorType &jOp) const
	The Jacobian of the operator. More...
void	constrain (DiscreteFunctionType &w) const
	The solution operator; unconditionally install the given constraints into the argument. More...
void	zeroConstrain (DiscreteFunctionType &w) const
	Unconditionally set the values of all masked DoFs to zero.
void	operator() (const DiscreteFunctionType &u, DiscreteFunctionType &w) const
	Apply the operator to the given argument. More...
void	jacobian (const DiscreteFunctionType &u, JacobianOperatorType &jOp) const
	The Jacobian of the operator. More...
void	constrain (DiscreteFunctionType &w) const
	The solution operator; unconditionally install the given constraints into the argument. More...
void	zeroConstrain (DiscreteFunctionType &w) const
	Unconditionally set the values of all masked DoFs to zero.

Protected Member Functions
void	updateBoundaryValues (const BoundaryValuesFunctionType &u, DiscreteFunctionType &w) const
	Update the flag vector and interpolate the boundary values.

Protected Attributes
const DiscreteFunctionSpaceType &	space_
	pointer to slave dofs

Detailed Description

template<class JacobianOperator, class BoundaryValues, class Indicator>
class Dune::ACFem::DirichletConstraints< JacobianOperator, BoundaryValues, Indicator >

Implementation of Dirichlet constraints.

Member Function Documentation

constrain() [1/2]

void Dune::ACFem::BulkBlockConstraints< JacobianOperator, DirichletBlockConstraintsTraits< JacobianOperator, BoundaryValues, Indicator > >::constrain ( DiscreteFunctionType &  w ) const

inlineinherited

The solution operator; unconditionally install the given constraints into the argument.

This "solves"

\[ w - g = 0 \]

for w.

constrain() [2/2]

template<class JacobianOperator , class BoundaryValues , class Indicator >

void Dune::ACFem::BulkBlockConstraints< JacobianOperator, Traits >::constrain ( DiscreteFunctionType &  w ) const

inline

The solution operator; unconditionally install the given constraints into the argument.

This "solves"

\[ w - g = 0 \]

for w.

Referenced by Dune::ACFem::EllipticFemSchemeBase< DiscreteFunction, Model, InitialGuess >::solve(), Dune::ACFem::ParabolicFemScheme< DiscreteFunction, TimeProvider, ImplicitModel, ExplicitModel, InitialValue, QuadratureTraits >::solve(), and Dune::ACFem::SplittingFemSchemeBase< DiscreteFunction, ImplicitModel, ExplicitDataFunction, ExplicitModel, InitialGuessFunction >::solve().

jacobian() [1/2]

void Dune::ACFem::BulkBlockConstraints< JacobianOperator, DirichletBlockConstraintsTraits< JacobianOperator, BoundaryValues, Indicator > >::jacobian ( const DiscreteFunctionType &  u, JacobianOperatorType &  jOp  ) const

inlineinherited

The Jacobian of the operator.

As the operator acts as identity minus affine offset, the Jacobian acts as identity. The methods does not alter any lines of jOp except for the "active" DoFs. The method handles slave-DoFs correctly in parallel runs.

jacobian() [2/2]

template<class JacobianOperator , class BoundaryValues , class Indicator >

void Dune::ACFem::BulkBlockConstraints< JacobianOperator, Traits >::jacobian ( const DiscreteFunctionType &  u, JacobianOperatorType &  jOp  ) const

inline

The Jacobian of the operator.

As the operator acts as identity minus affine offset, the Jacobian acts as identity. The methods does not alter any lines of jOp except for the "active" DoFs. The method handles slave-DoFs correctly in parallel runs.

operator()()

void Dune::ACFem::BulkBlockConstraints< JacobianOperator, DirichletBlockConstraintsTraits< JacobianOperator, BoundaryValues, Indicator > >::operator() ( const DiscreteFunctionType &  u, DiscreteFunctionType &  w  ) const

inlineinherited

Apply the operator to the given argument.

This operates as as an affine linear operator which computes

\[ \Gamma(x) = x - g \]

where g defines the affine offet. TZhe operator acts only on the given subset of "active" DoFs (e.g. the boundary DoFs) and leaves all other values of w alone.

rebuild()

template<class JacobianOperator , class BoundaryValues , class Indicator >

void Dune::ACFem::DirichletConstraints< JacobianOperator, BoundaryValues, Indicator >::rebuild ( ) const

inline

Rebuild everything in case the sequence number of the underlying space has changed, i.e.

after mesh adaptation.

References Dune::ACFem::DirichletConstraints< JacobianOperator, BoundaryValues, Indicator >::space_, and Dune::ACFem::DirichletConstraints< JacobianOperator, BoundaryValues, Indicator >::updateBoundaryValues().

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

• dune/acfem/operators/constraints/dirichletconstraints.hh