Gravitation Effects on Liquid Flames Forming Liquid-Gas Suspensions

摘要

We investigate self-propagating high-temperature synthesis (SHS) in high-caloric mixtures. The combustion temperatuares are extremely high.The ntially solid mixture is destroyed and realized in the melt. The melt is a gas-liquid suspension where there are chemical conversions of components. In the melt these components receive freedom of the relative motion due to the gravity and the difference of densities. By means of a simplified model of the liquid flame, we have studied the structure of the combustion front and its propagation velocity. We have taken into account the small mass amount of the gasifying component and consider the chemical exothermic conversion to a liquid product. We have shown that the relative motion changes the ratio of chemical active components and influences the velocity of the combustion front propagation.