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.
size_t	size () const
	Return the number of constrainted block-DoFs.
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.
LocalOperatorType	localOperator (const EntityType &entity) const
	Generate the local version of this operator from the given entitiy.
LocalOperatorType	localOperator () const
	Generate the local version of this operator, must later be bound to an entity by calling its init() method.
void	rebuild () const
	An update method which has to be called initially or after mesh-adaptation, or for time-dependent constraint values to recompute the affine offset when moving to the next time-step.
void	operator() (const DiscreteFunctionType &arg, 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	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	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.

Detailed Description

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

Implementation of Dirichlet constraints.

Member Function Documentation

constrain() [1/3]

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

inlineinherited

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

This "solves"

\[ w - g = 0 \]

for w.

constrain() [2/3]

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() [3/3]

template<class JacobianOperator , class BoundaryValues , class Indicator >

void Dune::ACFem::BlockConstraintsOperatorInterface< DiscreteFunction, Traits >::constrain

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()

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.

operator()()

void Dune::ACFem::BlockConstraintsOperatorInterface< JacobianOperator::RangeFunctionType , Traits >::operator() ( const DiscreteFunctionType &  arg, 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 >::updateBoundaryValues().

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

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