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单重态氧是氧碘化学激光的能量来源,其反应生成效率直接影响COIL输出的激光功率和光束质量。单重态氧的反应生成效率取决于气液接触面积,喷射式单重态氧生成器的气液接触面积与喷射器内的液滴分布有关。本文利用商业计算流体力学软件Fluent 6.3,对喷射式单重态氧发生器内不同气液流量情况下的液滴直径、速度分布规律进行模拟。模拟过程主动流体为水,被动流体为氯气和氦气的混合气体,通过模拟得出了不同气液流量情况下,喷射器内液滴的直径、速度分布情况。在液相流率不变的情况下,随气相流率的增大,喷射器内的液滴平均直径减小,平均速度增大,直径方差和速度方差减小,液滴直径和速度分布趋于集中,且变化趋势随气相流率的增大而减缓;当气相流率不变时,随液相流率的增大,液滴平均直径减小,平均速度增大,直径方差和速度方差都增大,液滴直径和速度分布趋于分散。
Singlet oxygen is the source of energy for oxy-iodine-based chemical lasers, and the efficiency of the reaction generates a direct influence on the laser power and beam quality of the COIL output. The efficiency of singlet oxygen generation depends on the gas-liquid contact area. The gas-liquid contact area of the jet singlet oxygen generator is related to the droplet distribution within the injector. In this paper, commercial computational fluid dynamics software Fluent 6.3 was used to simulate the droplet diameter and velocity distribution in the jet-generated singlet oxygen generator with different gas-liquid flow rates. The simulation process proactive fluid is water and the passive fluid is a mixed gas of chlorine and helium. Through the simulation, the diameter and velocity distribution of droplets in the ejector under different gas-liquid flow rates are obtained. With the constant flow rate of the liquid phase, with the increase of the gas phase flow rate, the average diameter of the droplet in the ejector decreases, the average velocity increases, the variance of the diameter and the velocity variance decrease, and the droplet diameter and velocity distribution tend to When the gas flow rate is constant, with the increase of liquid flow rate, the average diameter of the droplets decreases, the average velocity increases, the diameter and velocity variance Increased, the droplet diameter and velocity distribution tended to disperse.