| Speaker: Balázs Havasi-Tóth Affiliation: Budapest University of Technology and Economics Time: 2 pm Thursday, 9 May, 2019 Location: 303-257 |
| Particle dynamics form a frequently applied basis in the mathematical modeling of different physical phenomena. In general, particle methods can be considered as numerical schemes operating on clouds of material-points obeying mutual interaction laws. Since those vary widely by numerical methods and physical problems, several numerical tools focusing on a single or a limited collection of problems were developed, however, making the implementation of new ideas cumbersome. In order to maintain flexibility and configurability, the idea of the free-form definition of governing equations appears to be a beneficial choice in particle modeling. Such freedom can be reached by utilizing the fact that the majority of the particle methods can be covered by a suitably composed general formulation. We present a numerical implementation of a novel particle simulation tool completely lacking of built-in mathematical models but providing the interface for the free-form definition of almost arbitrary models. Essentially, the direct modeling of the collective physical behaviour and wearing of pebbles can be performed using a similar approach, hence we demonstrate the flexibility of the application through simple examples of discrete element modeling (DEM) of granular flows. |