Code_Saturne: new release of 1.3.3 and 1.4.0 versions

Dear CAELinux users,

I'd like to announce the following new versions of Code_Saturne:
- the corrective validated 1.3.3, with which every calculation from a previous 1.3.1/1.3.2 version should run.
- the intermediate development 1.4.0, it is still a development (in the sense: tested but not thoroughly validated) version but it will be supported until the next validated version due next year.

Please go to Code_Saturne website ( www.code-saturne.org/ ) for more information.

M. Admin (or anyone else), if you want more information on the red item below, please contact me directly or contact Code_Saturne support.

Main evolutions in Code_Saturne version 1.3.3

General evolutions:
- integration of Graphical User Interface in the SALOME platform (version 4.1.3 and above)
- porting on BlueGene/P architectures
- coupling with SYRTHES version 3.4.2, compliant with larger mesh sizes
- english translation of comments in all the user scripts
- partial translation of Kernel messages with management of both French and English languages
- addition of a "-post" option to post-process the modified faces when using the "cut warp faces" option

Corrections:
- correction of inconsistent arguments in the heavy fuel oil combustion module
- modification in the handling of rotation periodicity in the Lagrangian module
- improvement of mesh coherency tests
- correction in ghost cells treatment for rotation periodicity
- correction of GUI specification of wall roughness, exchange coefficient boundary conditions and specific numerical model parameters for pressure

Improvements in documentation
- partial english translation of theory documentation


Main evolutions in Code_Saturne version 1.4.0

Numerical evolutions:
- New algebric multigrid algorithm for solving linear systems. It is yet available only for the pressure equation. This algorithm can decrease the time for solving this equation by a factor up to 10, and decrease the overall simulation time by a factor 3.
- Full restructuration of ghost cells (for parallelism and periodicity), to adapt to the new multigrid algorithm
- Restart files are now read and written using MPI-IO optimised libraries, when available

Physical evolutions:
- oxycombustion of coal
- droplet size class management for heavy fuel oil combustion
- partial integration of cooling towers module
- partial integration of Code_Saturne/Code_Aster (structure mechanics) coupling via the SALOME platform

Architecture evolutions:
- full rewrite of the Graphical User Interface in Python Qt for better integration in the SALOME platform
- full integration in the SALOME platform with direct access to the Code_Saturne Graphical User Interface
- porting on BlueGene/P and Cray XT machines
- coupling with SYRTHES 3.4.2, allowing to use larger solid meshes
- full translation of user scripts
- partial translation of Kernel messages
- LONGIA and LONGRA, sizes of macro-arrays IA and RA, are now independent of the number of processors and can be specified in the Graphical Interface or in usini1.F

Pre/post-processing evolutions:
- partitionning for parallel computing is now done separately; hence, when changing the number of processors from one calculation to another, it is no more necessary to redo the full preprocessing (mesh pasting especially)
- unique output file for the preprocessor
- unified format for preprocessor output files and restart files (an executable cs_io_dump is available to check the content of these files)

Documentation evolutions
- further translation of theory manual<br /><br />Post edited by: David Monfort, at: 2009/01/14 16:04