/// <summary>
/// See also <see cref="GRID_CASE"/> and <see cref="GRID_FILE"/>.
/// </summary>
protected override GridCommons CreateOrLoadGrid()
{
GridCommons grd;
switch (GRID_CASE)
{
case 1:
grd = Grid1D.LineGrid(GenericBlas.Linspace(-4, 4, 5));
break;
case 2: {
grd = Grid1D.LineGrid(GenericBlas.Linspace(-4, 4, 20));
break;
}
case 3: {
double[] xnodes = new double[] { -2, 0, 2 };
double[] ynodes = new double[] { -2, 0, 2 };
double dx = xnodes[1] - xnodes[0];
double dy = ynodes[1] - ynodes[0];
//this.CellVolume = dx * dy;
//if(Math.Abs(dx - dy) <= 1.0e-12)
// EdgeArea = dx;
grd = Grid2D.Cartesian2DGrid(xnodes, ynodes, periodicX: false, periodicY: false, type: CellType.Square_4);
break;
}
case 4: {
double[] xnodes = GenericBlas.Linspace(-1, 5, 9);
double[] ynodes = GenericBlas.Linspace(-1, 5, 13);
double dx = xnodes[1] - xnodes[0];
double dy = ynodes[1] - ynodes[0];
this.CellVolume = dx * dy;
if (Math.Abs(dx - dy) <= 1.0e-12)
{
EdgeArea = dx;
}
grd = Grid2D.Cartesian2DGrid(xnodes, ynodes, periodicX: false, periodicY: false, type: CellType.Square_4);
break;
}
case 5: {
double[] xnodes = GenericBlas.Linspace(-1, 1, 8);
double[] ynodes = GenericBlas.Linspace(-1, 1, 13);
grd = Grid2D.UnstructuredTriangleGrid(xnodes, ynodes, JitterScale: 0.5);
break;
}
case 6: {
grd = Circle();
break;
}
case 7: {
// test periodicity
grd = Grid2D.CurvedSquareGrid(GenericBlas.Linspace(1, 2, 4), GenericBlas.Linspace(0, 0.25, 10), CellType.Square_9, PeriodicS: true);
AltRefSol = true;
break;
}
case 8: {
double[] rNodes = GenericBlas.Linspace(1, 4, 8);
double[] sNodes = GenericBlas.Linspace(0, 0.5, 15);
grd = Grid2D.CurvedSquareGrid(rNodes, sNodes, CellType.Square_4, PeriodicS: false);
break;
}
case 9: {
double[] xNodes1 = GenericBlas.Linspace(-1, 0.3, 7);
double[] yNodes1 = GenericBlas.Linspace(-1, 1, 13);
double[] xNodes2 = GenericBlas.Linspace(0.3, 1, 5);
double[] yNodes2 = GenericBlas.Linspace(-1, 1, 25);
double[] xNodes3 = GenericBlas.Linspace(-1, 1, 8);
double[] yNodes3 = GenericBlas.Linspace(-2, -1, 5);
var grd1 = Grid2D.Cartesian2DGrid(xNodes1, yNodes1, type: CellType.Square_Linear);
var grd2 = Grid2D.Cartesian2DGrid(xNodes2, yNodes2, type: CellType.Square_Linear);
var grd3 = Grid2D.Cartesian2DGrid(xNodes3, yNodes3, type: CellType.Square_Linear);
var grdJ = GridCommons.MergeLogically(grd1, GridCommons.MergeLogically(grd2, grd3));
grd = GridCommons.Seal(grdJ, 4);
break;
}
case 10: {
double[] xNodes1 = GenericBlas.Linspace(-1, 0.3, 4);
double[] xNodes2 = GenericBlas.Linspace(0.3, 1, 5);
double[] yNodes1 = GenericBlas.Linspace(-1, 1, 9);
double[] yNodes2 = GenericBlas.Linspace(-1, 1, 5);
double[] zNodes1 = GenericBlas.Linspace(-1, 1, 5);
double[] zNodes2 = GenericBlas.Linspace(-1, 1, 3);
var grd1 = Grid3D.Cartesian3DGrid(xNodes1, yNodes1, zNodes1);
var grd2 = Grid3D.Cartesian3DGrid(xNodes2, yNodes2, zNodes2);
var grdJ = GridCommons.MergeLogically(grd1, grd2);
grd = GridCommons.Seal(grdJ, 4);
break;
}
case 11: {
grd = Grid2D.Trapezoidal2dGrid(4, 2, 2, GenericBlas.Linspace(0, 1, 2));
break;
}
case 12: {
var grid1 = Grid2D.Cartesian2DGrid(GenericBlas.Linspace(-3, 5, 5), GenericBlas.Linspace(-1, 1, 2));
//grd = base_grid;
//grid1.Plot2DGrid();
var gdat1 = new GridData(grid1);
var grid2 = gdat1.Adapt(new int[] { 1, 2 }, null, out GridCorrelation o2c_1);
//grid2.Plot2DGrid();
var gdat2 = new GridData(grid2);
var grid3 = gdat2.Adapt(new int[] { 2, 4 }, null, out GridCorrelation o2c_2);
//grid3.Plot2DGrid();
var gdat3 = new GridData(grid3);
var grid4 = gdat3.Adapt(new int[] { 11, 14, 15 }, null, out GridCorrelation o2c_3);
//grid4.Plot2DGrid();
var gdat4 = new GridData(grid4);
var grid5 = gdat4.Adapt(new[] { 4, 21, 22, 10 }, new[] { new[] { 13, 14, 15, 16 } }, out GridCorrelation o2c_4);
//grid5.Plot2DGrid();
grd = grid5;
break;
}
case 13: {
double[] rNodes = GenericBlas.Linspace(1, 4, 8);
double[] sNodes = GenericBlas.Linspace(0, 0.5, 15);
grd = Grid2D.CurvedSquareGrid(rNodes, sNodes, CellType.Square_9, PeriodicS: false);
break;
}
case 14: {
double[] rNodes = GenericBlas.Linspace(1, 4, 13);
double[] sNodes = GenericBlas.Linspace(0, 0.5, 25);
grd = Grid2D.CurvedSquareGrid(rNodes, sNodes, CellType.Square_16, PeriodicS: false);
break;
}
case 15: {
double[] rNodes = GenericBlas.Linspace(1, 2, 4);
double[] sNodes = GenericBlas.Linspace(0, 0.5, 4);
double[] zNodes = GenericBlas.Linspace(-1, 1, 5);
grd = Grid3D.CylinderGrid(rNodes, sNodes, zNodes, CellType.Cube_27, PeriodicS: false, PeriodicZ: false);
break;
}
case 16: {
grd = Grid2D.Ogrid(0.5, 1, 5, 3, CellType.Square_4);
break;
}
case 17: {
grd = Grid3D.Ogrid(0.5, 1, 3, 3, GenericBlas.Linspace(0, 4, 3));
break;
}
case 18: {
// aggregation grid
double[] xNodes = GenericBlas.Linspace(-1, 1, 5);
double[] yNodes = GenericBlas.Linspace(-1, 1, 5);
var baseGrid = Grid2D.UnstructuredTriangleGrid(xNodes, yNodes);
var baseGdat = new GridData(baseGrid);
var aggGrid = CoarseningAlgorithms.Coarsen(baseGdat, 2);
base.AggGrid = aggGrid;
grd = null;
double dx = xNodes[1] - xNodes[0];
double dy = yNodes[1] - yNodes[0];
this.CellVolume = dx * dy;
if (Math.Abs(dx - dy) <= 1.0e-12)
{
EdgeArea = dx;
}
break;
}
// ++++++++++++++++++++++++++++++++++++++++++++++++++++
// more expensive grids (not tested in DEBUG MODE)
// ++++++++++++++++++++++++++++++++++++++++++++++++++++
case 30: {
double[] xnodes = GenericBlas.Linspace(-1, 1, 7);
double[] ynodes = GenericBlas.Linspace(-1, 1, 9);
double[] znodes = GenericBlas.Linspace(-1, 1, 8);
grd = Grid3D.Cartesian3DGrid(xnodes, ynodes, znodes, periodicX: false, periodicY: false, periodicZ: false);
break;
}
// +++++++++++++++++++++++++++++++++
// grids imported from GMSH/CGNS
// +++++++++++++++++++++++++++++++++
case 50: {
// gmsh grid import test
Console.WriteLine("Loading file: '" + GRID_FILE + "'...");
grd = GridImporter.Import(GRID_FILE);
//Console.WriteLine("done. " + grd.NoOfUpdateCells.MPISum() + " cells loaded.");
//Plot2dGridGnuplot(grd);
HashSet <CellType> cellTypes = new HashSet <CellType>();
foreach (var cell in grd.Cells)
{
if (!cellTypes.Contains(cell.Type))
{
cellTypes.Add(cell.Type);
}
}
Console.Write("Cell types: ");
foreach (var ct in cellTypes)
{
Console.Write(ct);
Console.Write(" ");
}
Console.WriteLine();
break;
}
default:
throw new NotSupportedException();
}
return(grd);
}