Dynamic domain decomposition applied to hopper discharge simulation by discrete element method

Abstract

The paper presents the development of dynamic domain decomposition applied to hopper discharge simulation by the discrete element method (DEM). Parallel neighbour search algorithm, non-blocking interprocessor communication and dynamic load balancing are implemented in the DEM code. Parallel speed-up analysis is performed solving the complex hopper discharge problems containing 100000 and 300000 particles. The influence of the granular flow character on the load balance is investigated.