Abstract This article reviews published literature on the characteristics of a liquid jet injected transversally into a subsonic gaseous crossflow. The review covers the following aspects: (і) liquid jet primary breakup regimes, (іі) liquid jet trajectory and penetration, (ііі) liquid jet breakup length, and (іv) droplets features and formation mechanisms. The focus is on analyzing the role of different prominent parameters which include gaseous and liquid properties, and liquid injector geometry. The review revealed that gas Weber number plays a crucial role in defining non-turbulent primary breakup regimes, while liquid jet Weber number is of great importance for the transition to turbulent primary breakup. Jet-to-crossflow momentum flux ratio is the most important parameter for predicting the trajectory, penetration, and breakup length of a liquid jet in a crossflow. The characteristics of droplets disintegrated during the primary breakup are mostly influenced by the nozzle exit conditions, whereas the characteristics of droplets produced via the secondary breakup are strongly dependent on the velocity of cross airflow. Although the review revealed that substantial progress has been made in understanding this complex two-phase flow phenomenon, there still remain several shortcomings which require further research.

中文翻译：

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亚音速气体横流中的液体射流：最新进展和剩余挑战

摘要 本文回顾了关于横向注入亚音速气体横流的液体射流特性的已发表文献。审查涵盖以下方面：（і）液体射流初级破碎机制，（іі）液体射流轨迹和渗透，（ііі）液体射流破裂长度，以及（іv）液滴特征和形成机制。重点是分析不同突出参数的作用，包括气体和液体特性以及液体喷射器几何形状。审查表明，气体韦伯数在定义非湍流初级破碎状态中起着至关重要的作用，而液体射流韦伯数对于向湍流初级破碎的过渡非常重要。射流与横流的动量通量比是预测轨迹、穿透、和液体射流在横流中的破裂长度。在初级破碎过程中分解的液滴的特性主要受喷嘴出口条件的影响，而通过二级破碎产生的液滴的特性强烈依赖于交叉气流的速度。尽管审查表明在理解这种复杂的两相流现象方面取得了实质性进展，但仍然存在一些需要进一步研究的缺点。