Ignition of a reactive solid by an inert hot spot
Liñán Martínez, Amable
Kindelan Gómez, Manuel
- Publisher: E.T.S.I. Aeronáuticos (UPM)
Aeronáutica | Física | Química
arxiv: Physics::Plasma Physics | Physics::Chemical Physics
A theoretical analysis is presented for the description of the ignition of a reactive media by inert hot bodies of finite size, when the activation energy of the reaction is large. The analysis leads to closed-form relations for the minimum "critical" size of the hot spot resulting in ignition and for the ignition time by hot spots of supercritical size. The analysis is carried out, first, for inert spots with heat conductivities and diff usivities of the order of those of the reactive media, and, second, for inert bodies of large conductivity.