This study uses an experimental scale-up model together with a high-speed camera setup to quantitatively study the effect of Weber number on the breakup probability, deformation time, breakup time, breakup position, and breakup rate in this geometry in a turbulent jet. Results show an increase in breakup probability and a decrease in deformation and breakup times with increasing Weber number. Breakup also occurs earlier with higher Weber numbers. Breakup time is predicted by the time it takes the drop to reach the intense turbulent stresses in the jet shear layers. Whereas breakup typically occur via a bulb-neck mechanism, drops are more chaotically deformed when breaking, if doing so at a higher Weber number. Breakup rates increase with Weber number. However, the position of the maximum local breakup rate is somewhat Weber number dependent. Results shed light on the breakup in these devices and can be used for validating breakup models.

中文翻译：

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受限湍流壁射流中单滴破裂的实验研究 - 韦伯数的影响


本研究使用实验放大模型和高速相机装置来定量研究韦伯数对湍流射流中该几何结构的解散概率、变形时间、解散时间、解散位置和解散速率的影响。结果显示，随着韦伯数的增加，破裂概率增加，变形和破裂时间减少。韦伯数越高，分解也发生得更早。分解时间是通过液滴达到射流剪切层中的强烈湍流应力所需的时间来预测的。虽然破裂通常通过球颈机制发生，但如果以较高的韦伯数进行破碎，则液滴在破裂时会更加混乱地变形。破裂率随韦伯数的增加而增加。然而，最大局部破裂率的位置在某种程度上取决于韦伯数。结果揭示了这些设备中的分解，可用于验证分解模型。