GradDivOp.H

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#ifndef _GRADDIVOP_H_
#define _GRADDIVOP_H_

#include <iostream>
#include <cmath>
#include "SPACE.H"
#include <cstdlib>
#include <REAL.H>
#include <IntVect.H>
#include <Box.H>
#include <DisjointBoxLayout.H>
#include <LevelData.H>
#include <BaseFab.H>
#include "FArrayBox.H"
#include "FluxBox.H"
#include "GhostBC.H"
#include "TensorCFInterp.H"
#include "CFIVS.H"
#include "Copier.H"


class GradDivOp
{
public:

   bool isDefined() const;


  void define(
              const DisjointBoxLayout& Ba,
              const DisjointBoxLayout* base_ba,
              Real  DxLevel, 
              int refratio,
              const Box& domf,
              bool a_homogeneousOnly=false,
              int ncomp = 1);


  void define(
              const DisjointBoxLayout& Ba,
              const DisjointBoxLayout* base_ba,
              Real  DxLevel, 
              int refratio,
              const ProblemDomain& domf,
              bool a_homogeneousOnly=false,
              int ncomp = 1);


  void define(
              const GradDivOp* opfine,
              int refratio);
  
  GradDivOp();

  ~GradDivOp();



  void applyOpI(LevelData<FArrayBox>& a_LOfU,
                LevelData<FArrayBox>& a_U,
                const LevelData<FArrayBox>* a_UCoarse);


  void applyOpIcfHphys(LevelData<FArrayBox>& a_LOfU,
                       LevelData<FArrayBox>& a_U,
                       const LevelData<FArrayBox>* a_UCoarse);
                       


  void applyOpH(LevelData<FArrayBox>& a_LOfU,
                LevelData<FArrayBox>& a_U);
                


  void CFInterp(LevelData<FArrayBox>& a_U,
                const LevelData<FArrayBox>& a_UCoarse
                );


  void applyOpHcfIphys(LevelData<FArrayBox>& a_LofU,
                       LevelData<FArrayBox>& a_U);
  



  void computeFaceDiv(LevelData<FluxBox>& a_divU,
                      LevelData<FArrayBox>& a_U,
                      const LevelData<FArrayBox>* a_UCoarse);



  void computeFaceDivH(LevelData<FluxBox>& a_divU,
                       LevelData<FArrayBox>& a_U);
                      


  void homogeneousCFInterp(LevelData<FArrayBox>& a_U);

  void setDomainGhostBC(const DomainGhostBC& a_dombcin);


  void setTanGradBC(const DomainGhostBC& a_dombcIn);


  void
  homogeneousCFInterpU(LevelData<FArrayBox>& a_Uf, 
                         const DataIndex& a_datInd, 
                         int a_idir, 
                         Side::LoHiSide a_hiorlo);


  void homogeneousCFInterpTanGrad(LevelData<FArrayBox>& a_tanGrad,
                                  const LevelData<FArrayBox>& a_U,
                                  const DataIndex& a_datInd,
                                  int a_idir,
                                  Side::LoHiSide a_hiorlo);


  void getFlux(
               FArrayBox& flux, 
               const FArrayBox& a_data, 
               const DataIndex& a_datInd,
               int a_dir);

  const LevelData<FArrayBox>& getTanGrad() const;

protected:

  // boundary conditons
  DomainGhostBC m_domghostbc;

  // boundary conditions for tangential component of gradient
  DomainGhostBC m_tangradbc;

  //domain of fine grid
  ProblemDomain m_domain;

  //the grids at the current level
  DisjointBoxLayout m_grids;

  // Copier object that knows how to perform exchange operations on 
  // LevelData objects defined on m_grids
  Copier m_exchangeCopier;

  /* DisjointBoxLayout for next coarser level
     this is == NULL if there is no coarser level */
  DisjointBoxLayout m_baseBA;

  // number of components
  int m_ncomp;

  // refinement ratio between this and the next coarser level
  int m_refRatio;

  //mesh spacing at this level
  Real m_dxLevel;

  //mesh spacing at next coarser level
  Real m_dxCrse;

  /*
    coarse-fine information between this level
    and the next coarser level
  */
  TensorCFInterp m_quadCFI;

  //contains tangential gradient info
  LevelData<FArrayBox> m_tanGrad;

  //has full define function been called?
  bool m_isDefined;

  //has bc been defined?
  bool m_isBCDefined;

  // has bc for tangential gradients been defined?
  bool m_isGradBCDefined;

  //is inhomogeneous CF interpolation possible?
  bool m_ihcfiEnabled;

  LayoutData<CFIVS> m_loCFIVS[SpaceDim];
  LayoutData<CFIVS> m_hiCFIVS[SpaceDim];

  // will need these to do tangential gradient computations
  LayoutData<TensorFineStencilSet> m_hiTanStencilSets[SpaceDim];
  LayoutData<TensorFineStencilSet> m_loTanStencilSets[SpaceDim];

private:
  //internally useful functions

  void
  interpUOnIVS(
                 LevelData<FArrayBox>& a_Uf, 
                 const FArrayBox& a_Ustar, 
                 const DataIndex& dFine,
                 const int a_idir,
                 const Side::LoHiSide a_hiorlo,
                 const IntVectSet& a_interpIVS);
  

  void
  computeFaceDiv(LevelData<FluxBox>& a_div,
                 const LevelData<FArrayBox>& a_vel,
                 const LevelData<FArrayBox>& a_tanGrad);


  void
  computeFaceDiv(FArrayBox& a_div,
                 const FArrayBox& a_vel,
                 const FArrayBox& a_tanGrad,
                 const DataIndex& a_dataInd,
                 int faceDir);

  // computes tangential gradients of a_vel and stores in m_tanGrad
  void
  computeTanGradInterior(const LevelData<FArrayBox>& a_vel);

  // computes tangential gradients of a_vel and stores in m_tanGrad
  void
  computeTanGradInterior(const FArrayBox& a_vel,
                         const DataIndex& a_dataInd);


  // computes gradient of a_vel in a_gradDir and stores in m_tanGrad
  void
  computeTanGradInterior(const FArrayBox& a_vel,
                         const DataIndex& a_dataInd,
                         int a_gradDir);

  void clearMemory();

  void setDefaultValues();

};

#endif

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