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An Eulerian Re-impingement Model of Splashing and Bouncing Supercooled Large Droplets

机译:飞溅和反弹过冷大液滴的欧拉重冲模型

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A purely Eulerian numerical approach to track secondary droplets resulting from the bouncing and splashing of supercooled large droplets is proposed. Different models have been analyzed on the basis of their ability to provide initial conditions for the re-injected mass. The numerical method is evaluated for clean and iced NACA 23012 geometries in SLD conditions. Tests are performed to compare the accuracy of the proposed method with other numerical methods and icing tunnel experiments. Improvement is observed in the accuracy of the impingement limits, as well as the local collection efficiency, compared to other models. No improvement is seen in the prediction of local collection efficiency for severely contaminated geometries, and an analysis of potential influencing factors is reported.
机译:提出了一种纯粹的欧拉数值方法来跟踪由于过冷的大液滴的弹跳和飞溅而产生的次级液滴。根据不同模型为重新注入的物质提供初始条件的能力进行了分析。针对在SLD条件下清洁和结冰的NACA 23012几何形状,评估了该数值方法。进行测试以比较所提出的方法与其他数值方法和结冰隧道实验的准确性。与其他模型相比,可以看到撞击极限的准确性以及本地收集效率得到了改善。在对严重污染的几何形状的本地收集效率的预测中,没有发现改善,并且报告了对潜在影响因素的分析。

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