N3S-Natur Interface

Solver	N3S-Natur
Type of mesh	unstructured (tetrahedral or triangular)
Dimension	2D and 3D

The interface creates the grid file for the unstructured code N3S_Natur. This interface supports only 3D tetrahedral or 2D triangular meshes. Other element types are not supported. The grid file can be written in ascii or binary format. It contains the following informations:

• Header information : dimension of the grid, number of nodes, elements, groups etc.
  
• Nodal information : node number and coordinates of each node
• Volume elements
  
• Boundary elements
• Color groups
  

Select solver

Select solver N3S_Natur in the "Select solver" menu.

Boundary conditions setting

After generating the mesh, boundary conditions can be defined. Supported boundary conditions are:

• Color : user can specify a color number for elements or nodes of the part
• Periodic: user can set periodic face pairs
  

Write input

The user can write the N3S_Natur file after saving the project in the specified directory.