The TLNS3D-mb interface writes a map file and a grid file for the multiblocks TLNS3D-mb flow solver. It supports non C0-contiguous interfaces between blocks allowing local refinement. The map file contains a list of terms describing the properties, the turbulence parameters, the dimension and the boundary conditions of each block. The grid file is written in the PLOT3D multiblocks unformatted format with no iblank array.
Boundary condition types:
The boundary condition types must be assigned on the block faces. After selecting a face, assign the appropriate type by entering one of the name tags listed below. To define a boundary condition type on a singular line, assign the name tag to the corresponding edge. In MULCAD, these names have to be entered at the entry FLAG of the "Unspec. Bound. Cond." menu and in the DDN-Mesher Interface, under the entry string1 of the "general bound. cond." menu.
MULCAD DDN-Mesher ------ ---------- 1.FLAG 1.string1 Enter the appropriate name tagIf no boundary condition types are defined by the user, the translator assigns automatically:
no name tag definition -- -------- ---------- -1 non-C0 interface (set automatically) 1 --- C0 interface (set automatically) 2 SLIP slip (inviscid) wall 3 NOSLP noslip (viscous) wall 4 SYMM symmetry condition 5 DOWNS downstream/extrapolation condition 6 FFLD far-field condition (Riemann invariants) 7 SGLIN singular line (set automatically) 8 FANUP fan-upstream engine boundary 9 FANDW fan-downstream engine boundary 10 JETNZ jet-nozzle upstream condition 99 external walls (set automatically)Boundary conditions:
The boundary conditions can be defined on the block faces by specifying the tag PROP and entering the different property values in the order specified here.
MULCAD DDN-Mesher ------ ---------- 1.FLAG 1.string1 enter the tag PROP ... 3.VALUE 4.real1 enter the value of twotr (default is 0.0) 4.X 5.real2 enter the value of cq (default is 0.0) 5.Y 6.real3 enter the value of cpor (default is 0.0) 6.Z 7.real4 enter the value of pch (default is 1.0) 7.SCALE 8.real5 enter the value of rad (default is 0.0) where twotr: wall temperature (static) ration (twall/tref) cq : mass flow rate for blowing/suction cpor : coefficient in wall-porosity b.c. (Darcy/s law) pch : chamber pressure for Darcy's law for blowing/suction b.c. rad : specifies radiation b.c., rad=1 is activated, rad=0 is inactive