|Type of mesh||multiblock|
The IMPNS interface writes a grid file for the multiblocks IMPNS flow
solver. The grid file is written in Fortran unformatted format and
contains the coordinates of the mesh recorded in double precision. The
grid file name has the extension ".grid". The interface
currently only supports three-dimensional meshes.
After generating the mesh, the streamwise and crossflow block number of each block must be defined. Under the menu "Output", "Select solver", select IMPNS. Then select "Boundary Conds " and the current boundary condition file to edit. The "Family Boundary Conditions" window will open allowing to set the block numbering on all blocks. Note that each block must belong to a distinct family. The figure below illustrates the process of setting streamwise block number 3 and crossflow bloc number 2 to family "BLOC22".
Once all blocks have been assigned a streamflow and crossflow block numbers, the IMPNS output interface can be launched. Under the menu "Output", select "IMPNS Input". A window will open to allow the specification of the files that will be translated into the IMPNS format. Note that all structured block files (domain.1 to domain.N ) are automatically part of the input. In addition, the output interface requires the topology and boundary condition files, as well as the name of the IMPNS grid file to be created. Default names for the topology, boundary condition and IMPNS files will show up. These can be modified as necessary. The translator will add the suffix ".grid" to the IMPNS file.
The interface generates the IMPNS file in the same directory as the current