Numerical Modelling of Flow-Debris Interaction during Extreme Hydrodynamic Events with DualSPHysics-CHRONO

Floods can transport debris of a very wide range dimensions, from cohesive sediments to large floating debris, such as trees and cars. The latter increases the risk associated with floods by, for example, obstructing flow or damaging structures due impact. this type their interaction are often studied experimentally in context tsunamis flash floods. Numerical studies on problem rare, therefore present study focuses numerical modelling flow-debris interaction. This is achieved by simulating multiple laboratory experiments, available literature, single buoyant container transported dam-break order validate chosen approach. simulations carried using open source DualSPHysics model based smoothed particle hydrodynamics method coupled multi-physics engine CHRONO, which handles container–bottom interactions. trajectory, well velocity centroid container, were tracked throughout simulation compared same quantities measured laboratory. agreement between experiment results quantitatively assessed normalised root mean squared error it shown that accurate reproducing trajectory velocity.