LAURA Interface



The ICEM-CFD/LAURA interface writes an input file and a grid file for the multiblocks LAURA flow solver. The input file contains a list of terms describing the physical properties, block dimensions, topology, boundary conditions and control settings for the flow solver. The grid file is written in the PLOT3D multiblocks unformatted format with no iblank array.

Creating the LAURA input file and grid file

The translator writes the LAURA files using the structured domain files (domain.1 to domain.n), the boundary conditions file (boco), the topology file (topo_mulcad_out) and the LAURA parameters file. To create the LAURA files, select the translator "LAURA" in the "Output" menu from the ICEM CFD/CAE Manager. After clicking "Write output" you can specify the following options for the LAURA interface:

The interface generates the LAURA files located in the Transfer Shell. You may open a shell window in this directory by selecting the menu items "Utility" and "Transfer Shell".

Defining boundary conditions for LAURA

In MULCAD, the boundary conditions are defined on subfaces using the "Unspec. Bound. Cond." menu. For a mesh created with the HEXA-Mesher, use the "general bound. cond." menu of the DDN-Mesher Interface, or the menu button "Edit Boco" in the HEXA-Mesher. For more details on how to define boundary conditions in MULCAD or in the DDN-Mesher Interface, please refer to the General Remarks section.

Boundary Condition Type

The boundary condition types must be assigned on the block faces, except for singular faces where they are assigned to edges. After selecting a face, assign the appropriate boundary condition type by entering one of the LAURA bctype number.

        MULCAD         HEXA & DDN-Mesher
        ------         -----------------
        1.FLAG           1.string1        Enter the word TYPE
        2.NR             3.integer        Enter LAURA bctype number

The boundary condition types recognized by the LAURA solver are:

The boundary condition types 8 and 9 for block interfaces are automatically set by the translator:

If no boundary condition types are defined on an external wall, the translator assigns automatically the default type 0 (solid surface).