This diagram illustrates the layout of the CGNS file with the flow solution stored at the vertices.

Just below the root node of the ADF file are two nodes with the following characteristics.

Just below the CGNSBase_t node is a Zone_t node, with:

At the next level, below the Zone_t node are the following three nodes.

Three lines below the GridCoordinates_t node indicate the presence of the three child nodes defining the grid coordinates, but the child nodes themselves are omitted from the figure. Below the FlowSolution_t node are the following three nodes.