Be aware that duns and isaac use block meshes which must be created using the set 'all'. So the use of set 'all' together with the parameter 'block' is mandatory when the block structure is needed! Nevertheless the user might only assign an element type to a sub set so that only a part of the geometry will be meshed (see ”mesh”).
If the solver-format ”duns” is used then related numbers of surfaces (3D) or lines (2D) will be written to file “duns.bou”. This information is necessary to apply boundary-conditions to duns. The numbers are used in the connectivity file “duns.conn” which will be created together with the mesh. The user has to refer this numbers in the “duns.script2” file when assigning boundary conditions.
When using the cgx parameter 'periodic' with the send command it is necessary to deactivate the function 'CHKCUT' in the isaac main.F file:
modifications Wittig 13. Jul 21 main.F 933 // deactivate the coord check to enable periodic boundaries c CALL CHKCUT (IBLK1, IDIM(IBLK1,ILVL), JDIM(IBLK1,ILVL), c 1 KDIM(IBLK1,ILVL), R(IR1), c 2 IBLK2, IDIM(IBLK2,ILVL), JDIM(IBLK2,ILVL), c 3 KDIM(IBLK2,ILVL), R(IR2), ICUTS(1,ICUT,ILVL), c 4 CUTNAM(ICUT), IERRCD)Otherwhise the performed check would stop the program.