Populate grid subsets for faces and key points (like X-points, strike points)

[eldond]

• x_points: 6 (nodes defining X-points)
• core_cut: 7 (y-aligned faces inside the separatrix connecting to the active x-point)
  • This tells us where the cut defined by b2fgmtry was
  • If extrapolated, this curve would pass through the magnetic axis
• PFR_cut: 8 (y-aligned faces inside the private flux region connecting to the active x-point)
  • Another b2fgmtry cut
  • This is the boundary between inner and outer divertors
• outer_throat: 9 (y-aligned faces in the outer SOL connecting to the active X-point)
  • This is the boundary between SOL and outer divertor
• inner_throat: 10
• outer_midplane: 11 (y-aligned faces connecting to the node closest to the outer midplane on the separatrix)
• inner_midplane: 12
• outer_target: 13 (y-aligned faces defining the outer target)
• inner_target: 14
• core_boundary: 15 (innermost x-aligned faces)
  • the inner edge of the mesh; boundary between computation region and blank spot in the core
• separatrix: 16 (x-aligned faces defining the active separatrix)
• outer_mid_plane_separatrix: 101 (point on active separatrix at outer midplane)
  • Intersection of 11 with 16
• inner_mid_plane_separatrix: 102
  • Intersection of 12 with 16
• outer_target_separatrix: 103 (point on active separatrix at outer [divertor] target)
  • Intersection of 13 with 16
• inner_target_separatrix: 104
  • Intersection of 14 with 16

[anchal-physics]

a994b4d Added x_points

[anchal-physics]

8e399d0 Added faces and core_cut

[anchal-physics]

760ef7b Added pfr_cut, throats, targets, fixed speed issue

[anchal-physics]

3d5972b Finished all but midplane subsets

[anchal-physics]

62371f2 Added inner and outer midplane subsets

[anchal-physics]

With new visualitation through GGDUtils, it has come to light that some subsets are not created properly:

SOLPSgridVisualization.pdf

Issues to fix:

• Inner throat edge is wrongly identified.
• Outer midplane are y-aligned edges but is that what we really wanted?
• Inner midplane did not get populated.

@eldond Please add more issues to fix if you can spot them.