Abstract Optical experiments were used to identify breakup regimes for a liquid jet injected into in a second immiscible liquid undergoing turbulent Taylor vortex flow. Four jetting breakup behaviors were observed and these were compared with analogous jetting regimes in quiescent liquid-liquid systems as well as liquid-gas systems with a gaseous crossflow. Several jet breakage regime maps for liquid–liquid Taylor vortex flow were generated using jet Reynolds number, Ohnesorge number, crossflow Weber number, and momentum flux ratio as organizing parameters. However, selection of the breakup mechanism was found to depend primarily on the jet Reynolds number and was largely independent of parameters characterizing the fluid crossflow, such as the azimuthal Reynolds number and crossflow Weber number. This finding is consistent with previous observations that the downstream droplet size distribution in Taylor vortex flow is relatively insensitive to parameters other than the jet Reynolds number. Lastly, the transitions between the four identified jet breakage regimes were found to be coincident with changes in the mean droplet size observed downstream from the inlet jet.

中文翻译：

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液-液泰勒涡流中的射流分解机制

摘要 光学实验用于确定液体射流注入到经历湍流泰勒涡流的第二种不混溶液体中的破裂方式。观察到四种喷射破碎行为，并将它们与静态液-液系统以及具有气体错流的液-气系统中的类似喷射方式进行比较。使用射流雷诺数、Ohnesorge 数、横流韦伯数和动量通量比作为组织参数生成了几个液-液泰勒涡流的射流破碎状态图。然而，发现破碎机制的选择主要取决于喷射雷诺数，并且在很大程度上独立于表征流体横流的参数，例如方位角雷诺数和横流韦伯数。这一发现与之前的观察结果一致，即泰勒涡流中的下游液滴尺寸分布对射流雷诺数以外的参数相对不敏感。最后，发现四个确定的射流断裂状态之间的转变与在入口射流下游观察到的平均液滴尺寸的变化一致。