This diagram illustrates the layout of the relevant parts of the CGNS file with the flow solution at cell centers and dimensional data.

The base node of the CGNS database (just below the root node of the ADF file) has the following characteristics.

• Name: Base
  Label: CGNSBase_t
  Data: CellDimension=3, PhysicalDimension=3

Just below the CGNSBase_t node are the following three nodes.

• Name: Zone 1
  Label: Zone_t
  Data: VertexSize=(21,17,9), CellSize=(20,16,8), VertexSizeBoundary=(0,0,0)
• Name: DimensionalUnits
  Label: DimensionalUnits_t
  Data: (Kilogram, Meter, Second, Kelvin, Degree)
• Name: DataClass
  Label: DataClass_t
  Data: Dimensional

Below the Zone_t node are multiple nodes. The only one with details shown in the figure is:

• Name: FlowSolution
  Label: FlowSolution_t
  Data: MT

Below the FlowSolution_t node are the following three nodes.

• Name: GridLocation
  Label: GridLocation_t
  Data: CellCenter
• Name: Density
  Label: DataArray_t
  Data: r(1,1,1) to r(20,16,8)
• Name: Pressure
  Label: DataArray_t
  Data: p(1,1,1) to p(20,16,8)

Below each of the DataArray_t nodes is a child node defining the dimensional exponents. For the density, this is:

• Name: DimensionalExponents
  Label: DimensionalExponents_t
  Data: (+1,-3,0,0,0)

• Name: DimensionalExponents
  Label: DimensionalExponents_t
  Data: (+1,-1,-2,0,0)