| Popis: |
The CFD General Notation System (CGNS) standard has grown significantly since its first public release in May 1998. The Standard Interface Data Structures (SIDS) and corresponding Application Programming Interface (API) have been extended to support unstructured analysis data and geometry-to-mesh association. Several other extensions are currently under review: rigid grid motion, deforming grid, timeaccurate and iterative data, chemistry, multigrid, rotating coordinate systems, periodic boundary conditions, wall functions, 2D axisymmetry and Cartesian data. In parallel with the growth of the CGNS standard, the CGNS governing body has evolved into an independent entity and established its own charter. Efforts have also been undertaken to promote CGNS as the ISO standard for the recording of aerodynamic data. This paper reviews the progress made by CGNS over the past eighteen months. It first describes the technical advances in the CGNS database standard, followed by an overview of the new CGNS organization. Then the status of the CGNS in the ISO standardization process is presented, as well as a review of implementation and dissemination of CGNS. |
