Abstract
An experimental-theoretical method is proposed for calculating the burning velocity of Ti + xC granulated mixtures in a convective mode. The quadratic dependence of the burning velocity on the gas flow rate is shown. The behavior of the burning velocity in the convective mode was studied on the governing parameters and the gas flow rates are calculated, at which the convective mode of combustion replaces the conductive one. The transition between the combustion modes of a granulated mixture of Ti + 0.5C was experimentally realized, and a good agreement between the gas flow rate at the boundary of modes and the calculated value in the transition point was shown. The results can be used to explain and predict fast forest fires, since the fast convective combustion mode is realized with large gas flow rates (high wind speed) and low ignition temperatures typical of forests during the drought period.
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