7.6 ‘t6.geo’
/*********************************************************************
*
* Gmsh tutorial 6
*
* Transfinite meshes
*
*********************************************************************/
// Let's use the geometry from the first tutorial as a basis for this
// one
Include "t1.geo";
// Put 20 equidistant points on curve 4
Transfinite Line{4} = 20 ;
// Put 20 points with a refinement toward the extremities on curve 2
Transfinite Line{2} = 20 Using Bump 0.05;
// Put 30 points following a geometric progression on curve 1
// (reversed) and on curve 3
Transfinite Line{-1,3} = 30 Using Progression 1.2;
// Define the Surface as transfinite, by specifying the four corners
// of the transfinite interpolation
Transfinite Surface{6} = {1,2,3,4};
// (Note that the list on the right hand side refers to points, not
// curves. The way triangles are generated can be controlled by
// appending "Left", "Right" or "Alternate" after the list.)
// Recombine the triangles into quads
Recombine Surface{6};
// Apply an elliptic smoother to the grid
Mesh.Smoothing = 100;