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WHAT'S NEW

  • Version 5.2.9 - We now have an extremely efficient PDE Surface Smoother implemented in CSCMDO. The Surface Smoother is implemented with a Full Multi-Grid (FMG) convergence acceleration technique for excellent performance. Sorenson (Grape) boundary control is implemented with a hybrid scheme similar to that used in the GRIDGEN Software. Presently, orthogonality is imposed at all grid boundaries with spacing interpolated from the grid corners. A figure representing a smoothed viscous grid example (with a convergence history plot comparing both a single grid and the CSCMDO FMG methods) is found here.

  • AD Version of 5.2.9 - The latest version of CSCMDO has been processed through the adiC tool from Argonne National Labs in order to produce automatic volume grid sensitivity output for design. Some examples of a beveled deltawing geometry can be found here.

  • Version 5.3 - Skipped to avoid confusion with IRIX OS release.

  • Version 5.4.2 - This version includes the 1st production release of an efficient PDE Volume grid Smoother. The Volume Smoother is implemented using a Multi-Grid convergence acceleration technique for excellent performance. Sorenson (Grape) boundary control is implemented with a hybrid scheme similar to that used in the in the Surface smoother. Boundary control is optionally provided using the method introduced by Hilgenstock as modified byWhite. Presently, orthogonality is imposed at all grid boundaries with spacing interpolated from the grid corners. However, it is possible to also smooth sub-blocks in which case face intersection angles are maintained with the surrounding volume grid. A figure representing a smoothed volume grid example (with a convergence history plot comparing both a single grid and the CSCMDO Mult-Grid methods) is found here.

  • Version 5.4.3 - The ability to control the type of "Background" control of the PDE volume grid smoother was added. Added slope/spacing continuity for subblock smoothing. Can now also smooth with pure LaPlace or Thomas&Middlecoff (no "Foreground") control. Assorted minor bug/behavior fixes. Added statistical summary of grid sensitivity data from CSCMDO.AD when using the "CHECK" command.

  • Version 5.4.4 - Added the use of a "dummy" main function to allow for MPI execution on multiple nodes (strip-mining approach). Added the ability to SIGUSR1 signal (`kill -USR1 pid`) for safe exit with a save of the current grid (to Single Precision Binary PLOT3D file "InteruptedCSCMDO.bin") when running the PDE solver. Added PLOT3D grid face and surface reads similar to Gridgen types (No FORTRAN Unformatted capability). Graphic depicts Linux Icon Linux executables now available for download.


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Last Updated:Sep 17, 2002