论文部分内容阅读
在航天推进器中,推进剂在燃烧室内的气液两相流动与燃烧过程直接关系到燃烧性能和冷却性能的好坏,对推进器的整体性能具有重要影响.对小推力甲基肼/四氧化二氮双组元液体火箭推力室内液体推进剂在壁面液膜的形成和发展进行了数值计算.结果表明,液膜对燃烧室壁面起到了很好的冷却作用,液膜向前后两个方向发展,在2.0,ms内液膜质量和厚度达到最大值,随着燃烧室内温度的升高,液膜厚度和质量呈现震荡下降.
In aerospace propellers, the propellant in the combustion chamber is directly related to the combustion performance and the cooling performance in the gas-liquid two-phase flow and combustion process in the combustion chamber, and has an important influence on the overall performance of the propeller. The formation and development of liquid propellants in liquid rocket propellants were numerically calculated.The results show that the liquid film plays a very important role in cooling the wall of the combustor and the liquid film moves forward and backward Developed, the mass and thickness of the liquid film reached the maximum value within 2.0 ms, and as the temperature in the combustion chamber increased, the thickness and quality of the liquid film presented a shock drop.