Effect of the forest crown fire front on glass-reinforced plastic

In the present work, the authors present the formulation and numerical solution of the combined problem of the interaction of a glass-reinforced plastic disk, situated perpendicularly to the wind velocity and to the propagation velocity of the more dangerous forest crown fire [1]. It is found that as a result of the crown fire front action, there may exist regimes of nonignition, autoignition, and of ignition from the radiation and convective fluxes, as well as regimes of nonextinction and of extinction. It is shown that the persistent forest crown fires, for which the heat pulse is maximized, consitute the greatest fire hazard.