Simulation of the behavior of mixtures of heavy particles behind a shock-wave front

The two-dimensional inviscid nonstationary flow behind a shock wave passing through solid uranium dioxide or carbide particles suspended in liquid iro n was simulated numerically. Such layers can appear inside planets in the v icinity of the planet's solid core. Shock waves passing in the interior of a planet (resulting from a possible asteroid impact on the planet) can chan ge parameters of the layer. The calculations demonstrated that the local pa rticle mass concentration behind the incident and reflected shock waves inc reases considerably, which can cause a transition of the layer into a super critical state and a nuclear explosion inside the planet. The problem was s olved taking into account possible particle collisions and their deformatio n and fission as well as changes in the fields of major thermodynamic param eters inside and outside each particle.