Radiative Ignition Model of a Solid Fuel.
Radiative Ignition Model of a Solid Fuel.
(1654 K)
Kashiwagi, T.
Combustion Science and Technology, Vol. 8, 225-236,
1974.
Keywords:
solid fuels; ignition; equations; vapor phases; ignition
delay
Abstract:
A theoretical model describing radiative ignition of a
solid fuel is constructed and is numerically analyzed.
The model includes the effects of gas phase reaction and
a finite value of the absorption coefficient of the
solid (in-depth absorption of incident radiation). It
is found that the gas phase reaction must be included in
the model in order to understand radiative ignition of a
solid fuel and to find its ignition boundary. The
in-depth absorption of the incident radiation by a solid
fuel significantly affects the ignition delay time. The
results indicate that there is a finite range of values
for pyrolysis or gas phase reaction activation energy
for which ignition will occur. This finding has a
direct bearing on efforts to reduce material
ignitability.
