Numerical simulation of waves generated by landslides using a multiple-fluid Navier–Stokes model

摘要: Abstract This work reports on the application and experimental validation, for idealized geometries, of a multiple-fluid Navier–Stokes model waves generated by rigid deforming slides, with purpose improving predictive simulations landslide tsunamis. In such simulations, computational domain is divided into water, air, slide regions, all treated as Newtonian fluids. For penalty method allows parts fluid to behave solid. With latter method, coupling between water implicitly computed (rather than specifying known kinematics). Two different Volume Fluid algorithms are tested tracking interfaces actual regions. The simulated kinematics semi-elliptical block, moving down covered plane slope, first compared an earlier analytical solution. Results vertical fall rectangular block in then results. Finally, more realistic two- three-dimensional wedges sliding incline experiments. Overall, cases, solid velocities free surface deformations accurately reproduced model, provided that sufficiently resolved discretization used. potential illustrated complex scenarios involving caused multi-block or deformable slides.