divUStar.h

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#ifndef DIVUSTAR_H
#define DIVUSTAR_H

#include <iostream>
#include <string>
#include <cmath>
using namespace std;

#ifdef SINGLE
#define real float
#else
#define real double
#endif

class divUStar {

 public:
  divUStar();

  void initialize(int numberOfPatches, 
                  real dt, 
                  int cellNumberPerPatch, 
                  int ** StartIndex,  
                  real ****fp, 
                  int ** pointNumberMeshP, 
                  real *h, 
                  real ***xP, 
                  real ****uAux, 
                  real ****vAux, 
                  real ****wAux 
                  );

  ~divUStar();
  
 private: 

  void coarseGhostPoint(real ****fp);
  void fineGhostPoint(real ix, // 0 for odd; 1 for even in x direction
                      real iy, // 0 for odd; 1 for even in y direction
                      real iz, // 0 for odd; 1 for even in z direction
                      real ****fp);

  int nPatch; // each patch carries a square fine mesh
  int nMeshes;   // including the coarse mesh
  // the coarse mesh is the zeroth mesh and fine meshes are from 1st to the last
  int nCellPerPatch; // cell number in the coarse mesh that a patch uses

  int dim;

  int i, j, k;

  int iFine, jFine, kFine;

  // m for mesh iteration: meshes for patchs and coarse grid
  int m;



};

#endif

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