Lk. Gusachenko et al., Convective regime of filtration combustion of energetic materials in a cocurrent flow of their combustion products, COMB EXPL R, 37(5), 2001, pp. 540-549
The convective regime of filtration combustion of energetic materials in a
cocurrent flow of their combustion products is studied using a model with e
xtremely simplified kinetics and heat transfer, which shows instability of
the process. It is shown that the more accurate "two-temperature" model des
cribes a steady-state regime. In this regime, the gas temperature on the "h
ot" boundary of the heating zone is well below the combustion temperature,
and the solid-phase temperature is well below the temperature proposed in r
ecent studies on this topic. It is pointed out that the "two-temperature" a
pproach is unjustified and intragranular nonisothermicity must be taken int
o account for convective regimes. It is shown that the "three-temperature"
model, which takes into account this effect, does not give a stable steady-
state solution.