In this paper we examine droplet behavior and macroscopic atomization characteristics of a non-reactive liquid spray via a series of large-eddy simulations. In our numerical study we examine three popular models for spray atomization, namely, the Taylor analogy breakup (TAB), Reitz–Diwakar and Pilch–Erdman models, and compare their predictions against available experimental data. According to our simulations, and for the flow conditions considered herein, the TAB model exhibits a slightly better performance than the other two models do. Further, since the TAB model is known to underestimate the effect of disruptive drag forces, we present a modification to it and assess its predictive capacity. More specifically, according to the numerical test presented herein, our modification has the potential to improve the accuracy in the numerical computation of important global quantities of the spray, such as the liquid and vapor penetration distances.

中文翻译：

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喷雾流模拟的液滴破碎模型评估

在本文中，我们通过一系列大涡模拟研究了非反应性液体喷雾的液滴行为和宏观雾化特性。在我们的数值研究中，我们检查了三种流行的喷雾雾化模型，即泰勒类比分解 (TAB)、Reitz-Diwakar 和 Pilch-Erdman 模型，并将它们的预测与可用的实验数据进行比较。根据我们的模拟，对于此处考虑的流动条件，TAB 模型的性能略好于其他两个模型。此外，由于已知 TAB 模型低估了破坏性阻力的影响，我们对其进行了修改并评估其预测能力。更具体地说，根据本文提出的数值试验，