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利用开发的液滴燃烧模型,研究了环境压力、温度以及液滴初始温度对液滴燃烧特性的影响。结果表明:在燃料的临界压力下液滴的燃烧寿命最短。随着环境压力的升高,着火延迟逐渐缩短,火焰半径逐渐减小,并且火焰温度在快速上升期的上升速度逐渐减慢。随着环境温度的升高,液滴寿命和着火延迟均逐渐变短,火焰半径逐渐增大。随着液滴初始温度的升高,液滴寿命和着火延迟均线性减小,液滴初始温度只会使液滴的燃烧过程整体提前或延后。
The developed droplet combustion model was used to study the effects of ambient pressure, temperature and the initial droplet temperature on the combustion characteristics of the droplets. The results show that the liquid fuel has the shortest combustion life under the critical pressure of the fuel. With the increase of environmental pressure, the ignition delay gradually shortened, the flame radius gradually decreased, and the flame temperature in the rapid rise period slowed down gradually. With the increase of ambient temperature, the droplet life and ignition delay are gradually shortened, and the flame radius is gradually increased. As the initial droplet temperature increases, the droplet life and ignition delay decrease linearly, and the initial droplet temperature will only make the droplet combustion progress earlier or later.