Fast and correct computation. A comprehensive test concept to proof the new FDS-ScaRC technique

Abstract

Because CFD programs, like FDS, generally consist of a large number of different components representing the variety of participating numerical algorithms and chemical / physical processes, it is close to impossible to verify such codes in its entirety, for example with comparisons of fire tests. Instead, a careful verification and validation under consideration of mathematical conditions and used numerical schemes is imperative, even for single components as well as groups of components with increasing complexity. In particular, error cancelations between single program components can only be detected by such component-level tests. The article presents the structure of such a comprehensive test concept and the needs of more mathematical and numerically orientated test procedures that are much more suited for a reliable evaluation than only a simple visual comparison of the numerical results of experimental fire tests.