-« Bloc Fissure » is based on GEOM module geometrical Boolean operations. The initial structure being a mesh, a conversion from mesh to geometry becomes necessary. This operation is called extraction and reconstruction because it is only applied to a small part of the mesh, which is around the crack. The extracted mesh is called the « Box » and only external faces of this mesh are kept and converted into several geometrical surfaces. This operation implies some limitations on the input mesh. When all the Booleans operations are done, the geometry that contains the crack is meshed again with a ruled mesh in the tore and a free mesh elsewhere.\r
+« Bloc Fissure » is based on GEOM module geometrical Boolean operations. The initial structure being a mesh, a conversion from mesh to geometry becomes necessary. This operation is called extraction and reconstruction because it is only applied to a small part of the mesh, which is around the crack. The extracted mesh is called the « Box » and only external faces of this mesh are kept and converted into several geometrical surfaces. This operation implies some limitations on the input mesh. When all the Boolean operations are done, the geometry that contains the crack is meshed again with a ruled mesh in the torus and a free mesh elsewhere.\r