Abstract This paper presents planar measurements of Sauter mean diameter (SMD) and liquid volume fraction distributions of airblast spray injected into cross-flow. The experiments are conducted using a combination of structured laser illumination planar imaging with laser sheet drop-sizing (SLIPI-LSD) and particle/droplet imaging analysis (PDIA) techniques. Effect of gas to liquid mass ratio (GLR) and cross-flow velocity (Ucross) is studied. Planar SMD distribution at low GLR improved with increase in Ucross due to secondary atomization of large droplets. Uniform SMD distribution in a range of 10–20 µm is observed for GLR more than 3. The distribution of liquid volume fraction at low GLR condition shows poor dispersion with most of the liquid concentrated near the injector. The liquid volume fraction distribution improves with increase in GLR and better dispersion is observed for GLR more than 3 and two-phase momentum ratio (q2) greater than 13.06. Spatial bifurcation in liquid fraction is found for high GLR conditions. The SMD in the range of 10–20 µm and uniform distribution of liquid are observed for GLR more than 3 and q2 > 25.6.

中文翻译：

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使用基于 SLIPI 的技术对横流中的鼓风喷雾进行平面液滴尺寸和液体体积分数测量

摘要 本文介绍了喷入横流的喷气喷雾的 Sauter 平均直径 (SMD) 和液体体积分数分布的平面测量。这些实验是使用结构化激光照明平面成像与激光片液滴尺寸 (SLIPI-LSD) 和粒子/液滴成像分析 (PDIA) 技术的组合进行的。研究了气液质量比 (GLR) 和错流速度 (Ucross) 的影响。由于大液滴的二次雾化，低 GLR 下的平面 SMD 分布随着 Ucross 的增加而改善。对于大于 3 的 GLR，观察到 10–20 µm 范围内的均匀 SMD 分布。低 GLR 条件下的液体体积分数分布显示分散性差，大部分液体集中在注射器附近。液体体积分数分布随着 GLR 的增加而改善，当 GLR 大于 3 且两相动量比 (q2) 大于 13.06 时，观察到更好的分散。在高 GLR 条件下发现液体部分的空间分叉。当 GLR 大于 3 且 q2 > 25.6 时，观察到 SMD 在 10–20 µm 范围内且液体分布均匀。