Thermal Radiation of Explosion: Estimations of Risk of Thermal Defeat of People and Occurrence of Fires

Physical and hydrodynamic processes, accompanying explosions of condensed explosives and fuel-air mixtures are considered. The physical model, algorithm, and program code for modeling one-dimensional hydrodynamic processes, which are based on the equations of gas dynamics in the Lagrangian presentation, are discussed. The results of multiple systematic calculations of the dynamics of explosion are presented. These results have allowed in details to describe the spatial-temporal pattern of flow, the process of the energy transfer from explosion products to the surrounding medium, formation, propagation, and decay of a shock wave. The obtained results are compared with the approximation of a strong point explosion, theoretical and experimental literature data. The developed model and program code showed high efficiency and operability within a wide range of explosion parameters and conditions of the outer medium.