School of Civil Engineering

Continuum scale modelling of dam internal erosion: a coupled Material Point-Lattice Boltzmann approach

Internal erosion is an insidious process occurring in soil’s pore system which is one of the main reasons for failure of water retaining facilities including embankment dams and levees leading to great economic loss. Most of previous numerical studies of internal erosion focus on grain scale behaviours using particulate models like DEM. Although these models successively provided insights into mechanism of internal erosion, the results are difficult to be directly applied in field-scale applications which require an accurate and efficient continuum scale model. This study plans to fill the research gap by developing a novel mathematical model by coupling material point method (MPM) and lattice Boltzmann method (LBM) for soil-water interactions on continuum scale. Combining the advantages of MPM in handling large deformation problems and the efficiency of LBM on solving complex moving boundaries. The proposed model is anticipated to allow the simulation of large deformation of soil structure owing to internal erosion.  The final goal is to predict the transient evolution of internal erosion on real dams.

2:00pm - 3:00pm

Friday, 14 February 2020


AEB Seminar Room 502
Advanced Engineering Building (49)