PoissonOp4 Class Reference

#include <PoissonOp4.H>

Inheritance diagram for PoissonOp4:

Inheritance graph
[legend]

List of all members.

Public Member Functions

 PoissonOp4 ()
virtual ~PoissonOp4 ()
LinearOp functions
void define (const RealVect &a_dx, const ProblemDomain &a_domain, BCFunc a_bc)
virtual void createCoarsened (LevelData< FArrayBox > &a_lhs, const LevelData< FArrayBox > &a_rhs, const int &a_refRat)
virtual void residual (LevelData< FArrayBox > &a_lhs, const LevelData< FArrayBox > &a_phi, const LevelData< FArrayBox > &a_rhs, bool a_homogeneous=false)
virtual void preCond (LevelData< FArrayBox > &a_correction, const LevelData< FArrayBox > &a_residual)
virtual void applyOp (LevelData< FArrayBox > &a_lhs, const LevelData< FArrayBox > &a_phi, bool a_homogeneous=false)
virtual void create (LevelData< FArrayBox > &a_lhs, const LevelData< FArrayBox > &a_rhs)
virtual void assign (LevelData< FArrayBox > &a_lhs, const LevelData< FArrayBox > &a_rhs)
virtual Real dotProduct (const LevelData< FArrayBox > &a_1, const LevelData< FArrayBox > &a_2)
virtual void incr (LevelData< FArrayBox > &a_lhs, const LevelData< FArrayBox > &a_x, Real a_scale)
virtual void axby (LevelData< FArrayBox > &a_lhs, const LevelData< FArrayBox > &a_x, const LevelData< FArrayBox > &a_y, Real a, Real b)
virtual void scale (LevelData< FArrayBox > &a_lhs, const Real &a_scale)
virtual Real norm (const LevelData< FArrayBox > &a_x, int a_ord)
virtual void setToZero (LevelData< FArrayBox > &a_x)
MGLevelOp functions
virtual void relax (LevelData< FArrayBox > &a_e, const LevelData< FArrayBox > &a_residual, int iterations)
virtual void createCoarser (LevelData< FArrayBox > &a_coarse, const LevelData< FArrayBox > &a_fine, bool ghost)
virtual void restrictResidual (LevelData< FArrayBox > &a_resCoarse, LevelData< FArrayBox > &a_phiFine, const LevelData< FArrayBox > &a_rhsFine)
virtual void prolongIncrement (LevelData< FArrayBox > &a_phiThisLevel, const LevelData< FArrayBox > &a_correctCoarse)

Static Public Attributes

static const int m_nGhost = 2

Protected Member Functions

void levelGSRB (LevelData< FArrayBox > &a_e, const LevelData< FArrayBox > &a_residual)

Protected Attributes

RealVect m_dx
RealVect m_dxCrse
ProblemDomain m_domain
BCFunc m_bc
LevelDataOps< FArrayBoxm_levelOps
DisjointBoxLayout m_coarsenedMGrids


Constructor & Destructor Documentation

PoissonOp4::PoissonOp4 (  )  [inline]

virtual PoissonOp4::~PoissonOp4 (  )  [inline, virtual]


Member Function Documentation

void PoissonOp4::define ( const RealVect a_dx,
const ProblemDomain a_domain,
BCFunc  a_bc 
)

virtual void PoissonOp4::createCoarsened ( LevelData< FArrayBox > &  a_lhs,
const LevelData< FArrayBox > &  a_rhs,
const int &  a_refRat 
) [virtual]

virtual void PoissonOp4::residual ( LevelData< FArrayBox > &  a_lhs,
const LevelData< FArrayBox > &  a_phi,
const LevelData< FArrayBox > &  a_rhs,
bool  a_homogeneous = false 
) [virtual]

Say you are solving L(phi) = rhs. Make a_lhs = L(a_phi) - a_rhs. If a_homogeneous is true, evaluate the operator using homogeneous boundary conditions.

Implements LinearOp< LevelData< FArrayBox > >.

virtual void PoissonOp4::preCond ( LevelData< FArrayBox > &  a_cor,
const LevelData< FArrayBox > &  a_residual 
) [virtual]

Given the current state of the residual the correction, apply your preconditioner to a_cor.

Implements LinearOp< LevelData< FArrayBox > >.

virtual void PoissonOp4::applyOp ( LevelData< FArrayBox > &  a_lhs,
const LevelData< FArrayBox > &  a_phi,
bool  a_homogeneous = false 
) [virtual]

In the context of solving L(phi) = rhs, set a_lhs = L(a_phi). If a_homogeneous is true, evaluate the operator using homogeneous boundary conditions.

Implements LinearOp< LevelData< FArrayBox > >.

virtual void PoissonOp4::create ( LevelData< FArrayBox > &  a_lhs,
const LevelData< FArrayBox > &  a_rhs 
) [virtual]

Creat data holder a_lhs that mirrors a_rhs. You do not need to copy the data of a_rhs, just make a holder the same size.

Implements LinearOp< LevelData< FArrayBox > >.

virtual void PoissonOp4::assign ( LevelData< FArrayBox > &  a_lhs,
const LevelData< FArrayBox > &  a_rhs 
) [virtual]

Set a_lhs equal to a_rhs.

Implements LinearOp< LevelData< FArrayBox > >.

virtual Real PoissonOp4::dotProduct ( const LevelData< FArrayBox > &  a_1,
const LevelData< FArrayBox > &  a_2 
) [virtual]

Compute and return the dot product of a_1 and a_2. In most contexts, this means return the sum over all data points of a_1*a_2.

Implements LinearOp< LevelData< FArrayBox > >.

virtual void PoissonOp4::incr ( LevelData< FArrayBox > &  a_lhs,
const LevelData< FArrayBox > &  a_x,
Real  a_scale 
) [virtual]

Increment by scaled amount (a_lhs += a_scale*a_x).

Implements LinearOp< LevelData< FArrayBox > >.

virtual void PoissonOp4::axby ( LevelData< FArrayBox > &  a_lhs,
const LevelData< FArrayBox > &  a_x,
const LevelData< FArrayBox > &  a_y,
Real  a_a,
Real  a_b 
) [virtual]

Set input to a scaled sum (a_lhs = a_a*a_x + a_b*a_y).

Implements LinearOp< LevelData< FArrayBox > >.

virtual void PoissonOp4::scale ( LevelData< FArrayBox > &  a_lhs,
const Real a_scale 
) [virtual]

Multiply the input by a given scale (a_lhs *= a_scale).

Implements LinearOp< LevelData< FArrayBox > >.

virtual Real PoissonOp4::norm ( const LevelData< FArrayBox > &  a_rhs,
int  a_ord 
) [virtual]

Return the norm of a_rhs. a_ord == 0 max norm, a_ord == 1 sum(abs(a_rhs)), else, L(a_ord) norm.

Implements LinearOp< LevelData< FArrayBox > >.

virtual void PoissonOp4::setToZero ( LevelData< FArrayBox > &  a_lhs  )  [virtual]

Set a_lhs to zero.

Implements LinearOp< LevelData< FArrayBox > >.

virtual void PoissonOp4::relax ( LevelData< FArrayBox > &  a_correction,
const LevelData< FArrayBox > &  a_residual,
int  a_iterations 
) [virtual]

Use your relaxtion operator to remove the high frequency wave numbers from the correction so that it may be averaged to a coarser refinement. A point relaxtion scheme, for example takes the form a_correction -= lambda*(L(a_correction) - a_residual).

Implements MGLevelOp< LevelData< FArrayBox > >.

virtual void PoissonOp4::createCoarser ( LevelData< FArrayBox > &  a_coarse,
const LevelData< FArrayBox > &  a_fine,
bool  ghosted 
) [virtual]

Create a coarsened (by two) version of the input data. This does not include averaging the data. So if a_fine is over a Box of (0, 0, 0) (63, 63, 63), a_fine should be over a Box (0, 0, 0) (31, 31, 31).

Implements MGLevelOp< LevelData< FArrayBox > >.

virtual void PoissonOp4::restrictResidual ( LevelData< FArrayBox > &  a_resCoarse,
LevelData< FArrayBox > &  a_phiFine,
const LevelData< FArrayBox > &  a_rhsFine 
) [virtual]

calculate restricted residual a_resCoarse[2h] = I[h->2h] (rhsFine[h] - L[h](phiFine[h])

Implements MGLevelOp< LevelData< FArrayBox > >.

virtual void PoissonOp4::prolongIncrement ( LevelData< FArrayBox > &  a_phiThisLevel,
const LevelData< FArrayBox > &  a_correctCoarse 
) [virtual]

correct the fine solution based on coarse correction a_phiThisLevel += I[2h->h](a_correctCoarse)

Implements MGLevelOp< LevelData< FArrayBox > >.

void PoissonOp4::levelGSRB ( LevelData< FArrayBox > &  a_e,
const LevelData< FArrayBox > &  a_residual 
) [protected]


Member Data Documentation

const int PoissonOp4::m_nGhost = 2 [static]

BCFunc PoissonOp4::m_bc [protected]


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

Generated on Tue Aug 22 03:27:24 2017 for Chombo + EB + MF by  doxygen 1.5.5