Numerical Study of Heat and Mass Transfer at the Ignition of Condensed Substances by Hot Particles

摘要

Mathematical models of ignition of condensed substances considering interconnected processes of a heat and mass transfer in systems "composite propellant - hot particle - gas", "liquid fuel - hot particle - air" and "gel-like fuel - hot particle - gas" were developed. As a result of numerical modeling modes of ignition for solid, liquid and gel-like condensed substances characterized by ignition delay time and arrangement of ignition zone relative to local energy source were established. Liquid fuel has 3 ignition modes, composite propellant and gel-like fuels have 1 ignition mode.