INCA Interface

Solver	INCA
Type of mesh	multiblock
Dimension	3D

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The INCA interface writes a multiblock computational mesh in the INCA mesh file format. This file contains the following information for each block of the output grid:

• Title for Zone n
• NPI, NPJ, NPK, NNBC, XYZMUL, TORS, IGENBC, IDIM
• X-coordinates
• Y-coordinates
• Z-coordinates
• NIPCHZ
  • Patch 1
  • Patch 2 ...
  • Patch NIPCHZ

where:

• NPI,NPJ,NPK: Number of mesh points in the I, J, and K-directions.
• NNBC: Number of boundary cells on each side of the zone. Currently, NNBC must be set to 2.
• XYZMUL: Mesh scale factor which is used to multiply X, Y, and Z to change the scale of the mesh. INCA expects the mesh coordinates to be in meters.
• TORS: Time or step. TORS is set to 0.
• IGENBC: This value is set to 1 meaning that INCA has to generate the mesh point coordinates for the boundary cells.
• IDIM: The interface supports three-dimensional mesh only, therefore IDIM is set to 3.
• NIPCHZ: Number of interzone patches connecting the current zone with adjacent zones.

Creating the INCA computational mesh file

The translator writes the INCA mesh file using the structured mesh, the boundary conditions file and the topology file. To create the INCA mesh file, "Select solver" → INCA in the "Output" menu. After clicking "Write input " you can specify the following options for the interface:

• select the domains to include in the output mesh
• give the name of the boundary condition file
• give the name of the topology file
• give the name of the INCA mesh file
• option to specify a scaling factor (XYZMUL)

The interface generates the INCA mesh file located in the project directory.

Limitations

The first release of this interface contains the following limitations. Please note that if requested by our customers, these limitations will be lifted.

• The interface supports only 3D grids.
• The output file can only be written in ASCII.
• Periodic boundary conditions are not supported.

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