Basic Cartesian Mesh Geometry Support

The Cartesian geometry package provides classes to manage a simple Cartesian mesh defined over an AMR mesh and to transfer data between levels of different spatial resolution in the mesh hierarchy (i.e., refining and coarsening). The Cartesian mesh is defined by the NDIM-tuple (dx[0],...,dx[NDIM-1]) of mesh increments given on the coarsest hierarchy level. The mesh increments on each finer level are determined by multiplying the increments on the coarsest level by the refinement ratio relating the index spaces between the two levels. More simply put, the mesh spacing on each hierarchy level is constant in each coordinate direction and that spacing is determined by refinement ratios between the level and the mesh on the coarsest level.

In the interest of brevity, we include header file documentation for a single data coarsen operator and a single data refine operator here. These interlevel data transfer operators are representative of all other operator classes in the Cartesian geometry package. The minor exceptions to this are the details of the individual operators, such as stencil width, operator priority, identifier name string, etc. For reference, we list below the spatial coarsen and refine operators currently available for Cartesian geometry and the string identifiers that can be used to look them up using the xfer_GeometryX class. It is important to note that new operators may be added at any time without re-compilation of the Cartesian geometry package or SAMRAI library code.

For information on mesh-independent operators, including constant spatial refinement operators, and linear time interpolation operators, see

For information on the options to use user-defined operators for coarsening, refining, and time interpolation, or the option to use no such operators, see

Generated on Thu Jun 18 11:28:17 2009 for SAMRAI by  doxygen 1.5.1