Rather, it is intended simply to touch on all the steps in the modeling process and to take a new user through the system from more » start to finish.
It is not intended to be a complete description of all the parts of the TSAR package. This is a document to describe the creation of a simple TSAR model, beginning with an MGED solid and continuing the process through final results from TSAR.
Brl cad program size manuals#
= ,Ī new user, upon receipt of the TSAR EM modeling system, may be overwhelmed by the number of software packages to learn and the number of manuals associated with those packages. Nonetheless, it has already been used to generate meshes for several projects at LLNL, and users of these meshes have obtained acceptable results.
Brl cad program size generator#
Our mesh generator is currently undergoing internal testing further development.
In addition to the above changes, several new features and capabilities have been added which together form a very flexible tool for generating FD meshes. By using octants, the mesh generator can sense the configuration of the geometry contained by a cell and assign only those mesh elements which are more » appropriate to the given configuration. The basis of this new approach is a two step process of sampling and filtering which require that each FD mesh cell be subdivided into eight equal-sized octants. In the past, edge (wire) mesh elements were approximated from mesh cells, however, we are now able to generate true edge mesh elements in a direct and straightforward manner. Our new approach also generates mesh elements which are more appropriate for our FD analysis code, TSAR, which calculates edge-based vector unknowns. This new approach has dramatically improved the correspondence between generated meshes and the originating geometries. In addition to the basic changes required by the differences between these two modelers and their application interfaces, we have also developed a new strategy for generating the mesh from the sample data.
During the past year we have changed our solid modeling platform for FD mesh generation from the TIPS-1 solid modeler to the BRL-CAD package. For the past three years Lawrence Livermore National Laboratory has been developing methods for generating 3D finite difference (FD) meshes directly from solid models.
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