Domain_Features

This data setup defines the domain size, the grid data, the domain decomposition features (MPI parallelisation characteristics : number of MPI processes bounded to subdomains and how they are distributed over the domain) and the number of threads also used to split the domain (OpenMP parallelisation).

Geometric_Layout

Type : integer value

This option selects the type of geometry configuration used :

0 : Cartesian geometry

1: Cylindrical geometry. The axis is oriented along the K-direction. The coordinate system is

2: Cylindrical geometry. The axis is oriented along the I-direction. The coordinate system is

3: Cylindrical geometry. The axis is oriented along the J-direction. The coordinate system is

Start_Coordinate_I_Direction

Type : real value

Origin coordinate along the I-direction.

Start_Coordinate_J_Direction

Type : real value

Origin coordinate along the J-direction.

Start_Coordinate_K_Direction

Type : real value

Origin coordinate along the K-direction.

End_Coordinate_I_Direction

Type : real value

End coordinate along the I-direction.

End_Coordinate_J_Direction

Type : real value

End coordinate along the J-direction.

End_Coordinate_K_Direction

Type : real value

End coordinate along the K-direction.

Cells_Number_I_Direction

Type : integer value

Number of cells along the I-direction, excluding the ghost-cells)

Cells_Number_J_Direction

Type : integer value

Number of cells along the J-direction, excluding the ghost-cells)

Cells_Number_K_Direction

Type : integer value

Number of cells along the K-direction, excluding the ghost-cells)

Number_OMP_Threads

integer value

Number of Threads for OpenMP parallelization

MPI_Cartesian_Topology

Type : Boolean value

Select the MPI cartesian topology for the domain decomposition method (same number of subdomains along a given direction)

==== MPI_Topology_Topology ====

Type : Boolean value

Select the MPI graphic topology for the domain decomposition method (the number of subdomain along a given direction is variable)

Total_Number_MPI_Processes

Type : integer value

Total number of MPI processes used in the domain decomposition method

Max_Number_MPI_Proc_I_Direction

Type : integer value

Number of MPI processes along the I-direction (maximum number for the graphic topology)

Max_Number_MPI_Proc_J_Direction

Type : integer value

Number of MPI processes along the J-direction (maximum number for the graphic topology)

Max_Number_MPI_Proc_K_Direction

Type : integer value

Number of MPI processes along the K-direction (maximum number for the graphic topology)

Regular_Mesh

Type : boolean value

if .true., the mesh size is regular along each direction and the gris is directly built by the code. In opposite way, the grid is irrgular and the cell distribution is read in the specific files maillx_xxxxx.d, mailly_xxxxx.d and maillz_xxxxx.d (xxxxx corresponds to the subdomain/MPI-process number if the MPI domain-decomposition is used). These files are created from the mesh builder named meshgen.x.