液氧输送管路气泡生长及流动冷凝过程研究

通过对气泡进行动力学和热力学分析,构建了描述气泡在液氧输送管路中生长及流动冷凝全过程的理论模型。通过编程计算获得了气泡在整个生命过程中的尺寸、温度和运动轨迹的变化情况,预测了气泡的脱离直径和流动冷凝长度,并分析了注气速率和液体流速等热流参数的影响。计算结果表明,在气泡的生长过程中,气泡脱离直径随注气速率的增大而增大,随液体流速的增大而减小。在气泡的冷凝过程中,气泡的流动冷凝长度随注气速率的增大而增大,随液体流速的增大而缓慢增大并逐渐趋于稳定。

Investigation on bubble growth and flow condensation in liquid oxygen pipeline

An analytical model describing bubble growth and flow condensation process in liquid oxygen pipeline was established. Variations of the bubble size , temperature and movement were obtained by programming calculation , based on which the bubble departure diameter and flow condensation length were predicted. Moreover, influence of relevant flow parameters on the bubble departure diameter and flow condensation length were analyzed. Calculating results indicate that the bubble departure diameter increases with the increase of gas feeding rate and decreases with the increase of liquid velocity. The bubble flow condensation length increases with the increase of gas feeding rate , and as the liquid velocity increases, the flow condensation length gradually rises to a stable level.