Estimator Class Reference

To calculate an a posteriori estimator of the solution. More...

#include <Estimator.h>

Public Types
enum	EstimatorType {   ESTIM_ZZ = 0 ,   ESTIM_ND_JUMP = 1 }

Public Member Functions
	Estimator ()
	Default Constructor.
	Estimator (Mesh &m)
	Constructor using finite element mesh. More...
	~Estimator ()
	Destructor.
void	setType (EstimatorType t=ESTIM_ZZ)
	Select type of a posteriori estimator. More...
void	setSolution (const Vect< real_t > &u)
	Provide solution vector in order to determine error index. More...
void	getElementWiseIndex (Vect< real_t > &e)
	Get vector containing elementwise error index. More...
void	getNodeWiseIndex (Vect< real_t > &e)
	Get vector containing nodewise error index. More...
void	getSideWiseIndex (Vect< real_t > &e)
	Get vector containing sidewise error index. More...
real_t	getAverage () const
	Return averaged error.
Mesh &	getMesh () const
	Return a reference to the finite element mesh.

Detailed Description

To calculate an a posteriori estimator of the solution.

This class enables calculating an estimator of a solution in order to evaluate reliability. Estimation uses the so-called Zienkiewicz-Zhu estimator.

Author

Rachid Touzani

Copyright

GNU Lesser Public License

Member Enumeration Documentation

EstimatorType

enum EstimatorType

Enumerate variable that selects an error estimator for mesh adaptation purposes

Enumerator
ESTIM_ZZ	Zhu-Zienckiewicz elementwise estimator
ESTIM_ND_JUMP	Normal derivative jump sidewise estimator

Constructor & Destructor Documentation

Estimator()

Estimator

(

Mesh &

m

)

Constructor using finite element mesh.

Parameters

[in]

m

Mesh instance

Member Function Documentation

getElementWiseIndex()

void getElementWiseIndex

(

Vect< real_t > &

e

)

Get vector containing elementwise error index.

Parameters

[in,out]

e

Vector that contains once the member function setError is invoked a posteriori estimator at each element

getNodeWiseIndex()

void getNodeWiseIndex

(

Vect< real_t > &

e

)

Get vector containing nodewise error index.

Parameters

[in,out]

e

Vector that contains once the member function setError is invoked a posteriori estimator at each node

getSideWiseIndex()

void getSideWiseIndex

(

Vect< real_t > &

e

)

Get vector containing sidewise error index.

Parameters

[in,out]

e

Vector that contains once the member function setError is invoked a posteriori estimator at each side

setSolution()

void setSolution

(

const Vect< real_t > &

u

)

Provide solution vector in order to determine error index.

Parameters

[in]

u

Vector containing solution at mesh nodes

setType()

void setType

(

EstimatorType

t = ESTIM_ZZ

)

Select type of a posteriori estimator.

Parameters

[in]

t

Type of estimator. It has to be chosen among the enumerated values: ESTIM_ZZ: The Zhu-Zienckiewicz estimator (Default value) ESTIM_ND_JUMP: An estimator based on the jump of normal derivatives of the solution across mesh sides