Computational Geometry Kernel for Physics Solvers

A library of geometry routines is proposed that can act as a geometry kernel for physics solvers. Non-uniform rational basis splines (NURBS) are the shapes used to construct modern CAD and the math with efficient routines to compute them has been known for many years. If the physics solvers were able to couple to the NURBS geomety, it would allow for the exact, continuous geometry definition to be included in any simulations. Coupling the geometry with the solvers in this way would have far-reaching effects on simulations involving shape change such as ablation or aeroelasticsimulations, moving control surfaces such as fins and flaps, and high resolution automatic mesh refinement (AMR) to name just a few.An application programming interface (API) will allow solvers in any language to access the geometry kernel, whether its written in Fortran, C, or being run with a python script.