Abstract
A new robust and accurate SPH scheme, developed at the University of Trento, has been applied. It is able to track correctly complex 3D free-surface flows and, even more important, also able to compute an accurate pressure field. To asses the accuracy of the new SPH scheme, a mesh-convergence study has been performed for strongly deforming free-surface in a 3D dam-break and impact-wave problem on the infrastructure provided by HLRS in Stuttgart. The parallelization of the code has been carried out using the MPI paradigm with a dynamic load-balancing strategy to improve considerably the computational efficiency of the code. Thus, simulations involving millions of particles can be run on modern massively parallel supercomputers of HLRS, obtaining a very good performance, as confirmed by a speed-up analysis. The applications in 3D consist of environmental applications. First, dam-break and impact flows against a wall have been carried out and the solutions obtained with our SPH code have been compared with either experimental data or with other numerical reference solutions. Subsequently, the focus has been on a realistic mudflow. A very complex geometry and a non-Newtonian fluid are involved. In all tests a very satisfactory agreement and results have been obtained.
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