Abstract
Abstract Two-dimensional radiative gas dynamics model for numerical simulation of oxygen-hydrogen fire ball which may be generated by an explosion of a launch vehicle with cryogenic (LO2-LH2) fuel components is presented. The following physical-chemical processes are taken into account in the numerical model: - an effective chemical reaction between the gaseous components (O2-H2) of the propellant, - turbulent mixing and diffusion of the components, - radiative heat transfer. The results of numerical investigations of the following problems are presented: - the influence of radiative heat transfer on fire ball gas dynamics during the first 13 sec after explosion, - the effect of the fuel gaseous components afterburning on fire ball gas dynamics, - the effect of turbulence on fire ball gas dynamics (in a framework of algebraic model of turbulent mixing).
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