Some programs can generate quadrilateral meshes suitable for use with SUTRA. Two such programs are Argus ONE (https://www.argusone.com) and Gmsh (https://geuz.org/gmsh/ or https://gmsh.info/).
With Argus ONE, the user can make a quadrilateral mesh layer the active layer and select "File|Export|Export <layer name>..." and then select "File|Import|SUTRA Mesh." You will be prompted to select a file. Select the file exported by Argus ONE and the mesh will be imported.
With Gmsh run gmsh.exe either from the command line or interactively and generate a quadrilateral mesh. Then select "File|Import|SUTRA Mesh." You will be prompted to select a file. Select the .msh file generated by Gmsh and the mesh will be imported.
See also: File|Export|SUTRA 2D Mesh.
