Values, macros and structures in Gerris

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</source> </source>
-The vertices of the cube are stored in the GtsPoint array and the edges in the [[GfsSegment]] array.+The vertices of the cube are stored in the GtsPoint array and the edges in the [[#GfsSegment|GfsSegment]] array.
=== CellFace === === CellFace ===
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</source> </source>
-The vertices of the face are stored in the GtsPoint array and the edges in the [[GfsSegment]] array.+The vertices of the face are stored in the GtsPoint array and the edges in the [[#GfsSegment|GfsSegment]] array.
=== CompatPar === === CompatPar ===
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</source> </source>
-The homogeneous version of the considered [[GfsVariable]] is stored in lhs.+The homogeneous version of the considered [[#GfsVariable|GfsVariable]] is stored in lhs.
=== DiffusionCoeff === === DiffusionCoeff ===
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</source> </source>
-d is a [[GfsSourceDiffusion]], dt is the timestep, the [[GfsVariable]] rhoc is the mass, metric is the implicit metric term, the [[GfsFunction]] alpha is the inverse of the density and domain is the considered [[GfsDomain]].+d is a [[#GfsSourceDiffusion|GfsSourceDiffusion]], dt is the timestep, the [[#GfsVariable|GfsVariable]] rhoc is the mass, metric is the implicit metric term, the [[#GfsFunction|GfsFunction]] alpha is the inverse of the density and domain is the considered [[#GfsDomain|GfsDomain]].
=== FttCell === === FttCell ===
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</source> </source>
-children and parent are the two [[The Fully Threaded Tree|_FttOct]] associated with the FttCell.+children and parent are the two [[The Fully Threaded Tree/Basic Concepts|FttOct]] associated with the FttCell.
=== FttCellChildren === === FttCellChildren ===
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The children of the considered [[#FttCell|FttCell]] are stored in c (4 in 2D and 8 in 3D). The children of the considered [[#FttCell|FttCell]] are stored in c (4 in 2D and 8 in 3D).
 +
 +=== FttCellFace ===
 +
 +See [[The Fully Threaded Tree/Basic Concepts/FttDirection|FttDirection]].
 +
 +=== FttCellFlags ===
 +
 +<source lang="c">
 +typedef enum {
 + FTT_FLAG_ID = 7,
 + FTT_FLAG_DESTROYED = 1 << 3,
 + FTT_FLAG_LEAF = 1 << 4, /* used only for I/O operations */
 + FTT_FLAG_TRAVERSED = FTT_FLAG_LEAF, /* used for face traversal */
 + FTT_FLAG_USER = 5 /* user flags start here */
 +}
 +</source>

Revision as of 14:09, 15 May 2012

Contents

Values defined in Gerris

N_CELLS = FTT_CELLS = <math>2^{dimension}</math>

FTT_NEIGHBORS_2D = (FTT_BOTTOM) + 1

GFS_STATUS_UNDEFINED = 0

GFS_STATUS_SOLID = 1

GFS_STATUS_FLUID = 2

Gerris Macros


Gerris structures

CellCube 

typedef struct {
  GtsPoint p[8];
  GfsSegment s[12];
}

The vertices of the cube are stored in the GtsPoint array and the edges in the GfsSegment array.

CellFace 

typedef struct {
  GtsPoint p[4];
  GfsSegment s[4];
}

The vertices of the face are stored in the GtsPoint array and the edges in the GfsSegment array.

CompatPar 

typedef struct {
  GfsVariable * lhs;
  gboolean dirichlet;
}

The homogeneous version of the considered GfsVariable is stored in lhs.

DiffusionCoeff 

typedef struct {
  GfsSourceDiffusion * d;
  gdouble lambda2[FTT_DIMENSION];
  gdouble dt;
  GfsVariable * rhoc, * metric;
  GfsFunction * alpha;
  GfsDomain * domain;
}

d is a GfsSourceDiffusion, dt is the timestep, the GfsVariable rhoc is the mass, metric is the implicit metric term, the GfsFunction alpha is the inverse of the density and domain is the considered GfsDomain.

FttCell 

struct {
  /*<public>*/
  guint flags;
  gpointer data;
 
  /*<private>*/
  struct _FttOct * parent, * children;
}

children and parent are the two FttOct associated with the FttCell.

FttCellChildren 

struct {
  FttCell * c[FTT_CELLS];
};

The children of the considered FttCell are stored in c (4 in 2D and 8 in 3D).

FttCellFace

See FttDirection.

FttCellFlags 

typedef enum {
  FTT_FLAG_ID = 7,
  FTT_FLAG_DESTROYED = 1 << 3,
  FTT_FLAG_LEAF = 1 << 4, /* used only for I/O operations */
  FTT_FLAG_TRAVERSED = FTT_FLAG_LEAF, /* used for face traversal */
  FTT_FLAG_USER = 5 /* user flags start here */
}
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