Comprehensive Mathematical Analysis of Fall of Bolides in Atmosphere with Final Multiple Explosion

Abstract

Based on numerical and analytical approaches, a comprehensive physical and mathematical model determining the motion and destruction of natural cosmic bodies in the Earth atmosphere is created. Multilevel interrelated problems are considered, including simulation of the aeroballistics of meteoroids and their fragments taking into account their thermal and mechanical destruction; computation of airflow around a set of bodies (the meteorite fragments); and analysis of the problem of multiple “explosions” in atmosphere, which is inherent in meteoroids moving in the atmosphere after their fragmentation. The aim of the study is to resolve an important aspect of the asteroid and comet threat—the interaction of meteoroids with the atmosphere.