高温气流内雾滴运动与蒸发特性的理论分析

建立了高温气流内雾滴运动与蒸发的数学模型,对雾滴在高温气流内的运动与蒸发特性进行了理论分析。结果表明,雾滴在高温气流内的运动分为变速段和恒速段,雾滴终端速度取决于气流速度;雾滴粒径越小,追随气流运动的能力越强;雾滴在高温气流内蒸发时,粒径随时间呈指数规律递减。

Water droplet movement and its evaporation characteristics in high temperature gas flow

The mathematic models were established for the movement and evaporation of water droplet in high temperature gas flow,and its characteristics were analyzed.The results indicate that the movement of the droplet can be divided into the variable velocity process and constant velocity process,and that the terminal velocity of the droplet depends on the gas velocity.The smaller the droplet is,the more easily the droplet follows the gas flow.The diameter of the droplet decreases exponentially when the water droplet evaporates in the high temperature gas.