The official CGNS home page¶

The CFD General Notation System (CGNS) provides a general, portable, and extensible standard for the storage and retrieval of computational fluid dynamics (CFD) analysis data. It consists of a collection of conventions, and free and open software implementing those conventions. It is self-descriptive, machine-independent, well-documented, and administered by an international steering committee.

It is also an American Institute of Aeronautics and Astronautics (AIAA) Recommended Practice. The system consists of two parts: (1) a standard data model and mapping format for recording the data, and (2) software that reads, writes, and modifies data in that format. The format is a conceptual entity established by the documentation; the software is a physical product supplied to enable developers to access and produce data recorded in that format.

The CGNS system is designed to facilitate the exchange of data between sites and applications, and to help stabilize the archiving of aerodynamic data. The data are stored in a compact, binary format and are accessible through a complete and extensible library of functions. The API (Application Program Interface) is platform independent and can be easily implemented in C, C++, Fortran and Fortran90 applications.

Main Topics¶

What is CGNS?	Quick Start Guide	News
Documentation map	Steering Committee	Implementations
Support	Download the Software	Contributed CGNS Utilities
Example CGNS Files	A User’s Guide to CGNS	Discussion Group (CGNSTalk)
Meeting and Telecon Minutes	Conference Papers and Slide Presentations	Proposals for Extensions (CPEX)

Reference Documentation¶

CGNS/SIDS	CGNS/HDF5
CGNS/MLL	CGNS/Python
CGNS/FMM	CGNS/CGIO

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Contents

The official CGNS home page¶

Main Topics¶

Reference Documentation¶

Site map¶