Unsteady gasless combustion of planar symmetrical samples

Abstract

Influence of ignition conditions on the modes of unstable combustion of planar symmetrical green samples was numerically explored in terms of 2D theoretical model. Within the range of instability, ignition conditions were found to define the number of self-propagating hot spots and their trajectories. In case of uniform distribution of ignition temperature over the inner boundary of annular sample, the combustion front propagates in the form of expanding ring.