1st Leibniz MMS Days - Abstract
Wünnemann, Kai
Natural hazards, provoked by numerous events, occur frequently on Earth. Volcanic eruptions, earthquakes, landslides, tsunamis, and meteorite impacts are part of a family of large, rapid and violent geological processes that can have potentially catastrophic consequences. Reconstructions of paleo-events or predictions on the consequences of future hazards are in large part based on computer simulations. The development of appropriate modelling tools is difficult due to the multi-scale nature of such processes and because of complex material behaviour under the extreme conditions. We present a multi-material, multi-rheology CFD approach to simulate highly dynamic processes on different scale including shock wave propagation in heterogeneous materials, hypervelocity impact processes (crater formation and ejection of material), brittle fracturing and ductile deformation of rocks, and the interaction of solid particles with and expanding gas cloud at hypervelocity.