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- CGNS abstract "CGNS stands for CFD General Notation System. It is a general, portable, and extensible standard for the storage and retrieval of CFD analysis data. It consists of a collection of conventions, and free and open software implementing those conventions. It is self-descriptive, cross-platform also termed platform or machine independent, documented, and administered by an international steering committee. It is also an American Institute of Aeronautics and Astronautics (AIAA) recommended practice. The CGNS project originated in 1994 as a joint effort between Boeing and NASA, and has since grown to include many other contributing organizations worldwide. In 1999, control of CGNS was completely transferred to a public forum known as the CGNS Steering Committee. This Committee is made up of international representatives from government and private industry.The CGNS system consists of two parts: (1) a standard format (known as Standard Interface Data Structure, or SIDS) 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 application programming interface (API) is cross-platform and can be easily implemented in C, C++, Fortran and Fortran 90 applications. A MEX interface mexCGNS also exists for calling the CGNS API in high-level programming languages MATLAB and GNU Octave. Object oriented interface CGNS++ and Python module pyCGNS exist, while they are not maintained. The principal target of CGNS is data normally associated with compressible viscous flow (i.e., the Navier-Stokes equations), but the standard is also applicable to subclasses such as Euler and potential flows. The CGNS standard includes the following types of data. Structured, unstructured, and hybrid grids Flow solution data, which may be nodal, cell-centered, face-centered, or edge-centered Multizone interface connectivity, both abutting and overset Boundary conditions Flow equation descriptions, including the equation of state, viscosity and thermal conductivity models, turbulence models, multi-species chemistry models, and electromagnetics Time-dependent flow, including moving and deforming grids Dimensional units and nondimensionalization information Reference states Convergence history Association to CAD geometry definitions User-defined data Much of the standard and the software is applicable to computational field physics in general. Disciplines other than fluid dynamics would need to augment the data definitions and storage conventions, but the fundamental database software, which provides platform independence, is not specific to fluid dynamics.CGNS is self-describing, allowing an application to interpret the structure and contents of a file without any outside information. CGNS can make use of either two different low-level data formats: an internally developed and supported method called Advanced Data Format (ADF), based on a common file format system previously in use at McDonnell Douglas HDF5, a widely used hierarchical data format".
- CGNS wikiPageExternalLink cgns-python.berlios.de.
- CGNS wikiPageExternalLink cgns.sourceforge.net.
- CGNS wikiPageExternalLink cgnspp.sourceforge.net.
- CGNS wikiPageExternalLink mexcgns.
- CGNS wikiPageExternalLink mexcgns.
- CGNS wikiPageExternalLink cgns.
- CGNS wikiPageExternalLink www.cgns.org.
- CGNS wikiPageExternalLink steering.html.
- CGNS wikiPageID "16350686".
- CGNS wikiPageLength "5673".
- CGNS wikiPageOutDegree "34".
- CGNS wikiPageRevisionID "543369030".
- CGNS wikiPageWikiLink AIAA.
- CGNS wikiPageWikiLink American_Institute_of_Aeronautics_and_Astronautics.
- CGNS wikiPageWikiLink Application_programming_interface.
- CGNS wikiPageWikiLink Boeing.
- CGNS wikiPageWikiLink C++.
- CGNS wikiPageWikiLink CAD.
- CGNS wikiPageWikiLink C_(programming_language).
- CGNS wikiPageWikiLink Category:C_libraries.
- CGNS wikiPageWikiLink Category:Computational_fluid_dynamics.
- CGNS wikiPageWikiLink Category:Computer_file_formats.
- CGNS wikiPageWikiLink Common_Data_Format.
- CGNS wikiPageWikiLink Compressibility.
- CGNS wikiPageWikiLink Compressible.
- CGNS wikiPageWikiLink Computational_fluid_dynamics.
- CGNS wikiPageWikiLink Computer-aided_design.
- CGNS wikiPageWikiLink Cross-platform.
- CGNS wikiPageWikiLink EAS3.
- CGNS wikiPageWikiLink Euler_equations.
- CGNS wikiPageWikiLink FITS.
- CGNS wikiPageWikiLink Fortran.
- CGNS wikiPageWikiLink Fortran_90.
- CGNS wikiPageWikiLink GNU_Octave.
- CGNS wikiPageWikiLink GRIB.
- CGNS wikiPageWikiLink HDF5.
- CGNS wikiPageWikiLink Hierarchical_Data_Format.
- CGNS wikiPageWikiLink High-level_programming_language.
- CGNS wikiPageWikiLink List_of_file_formats.
- CGNS wikiPageWikiLink List_of_things_named_after_Leonhard_Euler.
- CGNS wikiPageWikiLink MATLAB.
- CGNS wikiPageWikiLink NASA.
- CGNS wikiPageWikiLink Navier-Stokes_equations.
- CGNS wikiPageWikiLink Navier–Stokes_equations.
- CGNS wikiPageWikiLink NetCDF.
- CGNS wikiPageWikiLink Object-oriented_programming.
- CGNS wikiPageWikiLink Object_oriented.
- CGNS wikiPageWikiLink Open-source_software.
- CGNS wikiPageWikiLink Open_software.
- CGNS wikiPageWikiLink Python_(programming_language).
- CGNS wikiPageWikiLink Scientific_data_format.
- CGNS wikiPageWikiLink Tecplot.
- CGNS wikiPageWikiLink Viscosity.
- CGNS wikiPageWikiLink Viscous.
- CGNS wikiPageWikiLink XMDF.
- CGNS wikiPageWikiLinkText "CGNS".
- CGNS wikiPageWikiLinkText "Computational Fluid Dynamics General Notation System (CGNS)".
- CGNS extension "cgns".
- CGNS genre List_of_file_formats.
- CGNS genre Scientific_data_format.
- CGNS hasPhotoCollection CGNS.
- CGNS latestReleaseDate "2011-08-31".
- CGNS latestReleaseVersion "3.1".
- CGNS name "CFD General Notation System".
- CGNS url www.cgns.org.
- CGNS wikiPageUsesTemplate Template:Infobox_file_format.
- CGNS subject Category:C_libraries.
- CGNS subject Category:Computational_fluid_dynamics.
- CGNS subject Category:Computer_file_formats.
- CGNS type Dynamic.
- CGNS comment "CGNS stands for CFD General Notation System. It is a general, portable, and extensible standard for the storage and retrieval of CFD analysis data. It consists of a collection of conventions, and free and open software implementing those conventions. It is self-descriptive, cross-platform also termed platform or machine independent, documented, and administered by an international steering committee. It is also an American Institute of Aeronautics and Astronautics (AIAA) recommended practice.".
- CGNS label "CGNS".
- CGNS sameAs CGNS.
- CGNS sameAs m.03whhwh.
- CGNS sameAs Q2931409.
- CGNS sameAs Q2931409.
- CGNS sameAs CGNS.
- CGNS wasDerivedFrom CGNS?oldid=543369030.
- CGNS isPrimaryTopicOf CGNS.