ИСТИНА

The present study examines the possibility of numerical simulation of a strong shock wave propagation over the surface of a dense layer of particles poured onto an impenetrable wall using the Baer-Nunizato two-phase flow model. The setting of the problem follows the full-scale experiment. The mathematical model is based on a two-dimensional system of Baer-Nunziato equations and takes into account intergranular stresses arising in the solid phase of particles. The computational algorithm is based on the HLLC method with a pressure relaxation procedure. The developed algorithm is efficient for problems with explicit interfacial boundaries and strong shock waves. These issues are typical of problems arising from the interaction of a shock wave with a bed, a cloud, or a layer of particles. A comparison with the numerical and full-scale experiments of other authors is carried out. A reasonable agreement with the experiment is obtained for the angles of the transmitted compaction wave and granular contact from a shock wave propagating along the particle layer.