arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1701.02504physics.flu-dyn
收藏

撞击液滴飞溅

Splashing of impacting drops

T. C. de Goede, K. G. de Bruin, D. Bonn

摘要:

我们调查的影响速度超过喷射的小液滴从主液滴(飞溅)发生液滴冲击光滑表面。我们研究其依赖于表面润湿性能和液滴表面张力。我们表明,飞溅速度是独立的润湿性能的表面,但增加大致线性增加的表面张力的液体。一个预先存在的飞溅模型被认为是预测的飞溅速度,将空气粘度。该模型与我们的数据一致,但计算复杂。为了解决这个问题,我们提出了一个简化,假设大气条件和低粘度,并表明简化提供了一个同样好的预测飞溅速度从一个简单的分析公式。

英文摘要:

We investigate the impact velocity beyond which the ejection of smaller droplets from the main droplet (splashing) occurs for droplets impacting a smooth surface. We examine its dependence on the surface wetting properties and droplet surface tension. We show that the splashing velocity is independent of the wetting properties of the surface, but increases roughly linearly with increasing surface tension of the liquid. A preexisting splashing model is considered that predicts the splashing velocity by incorporating the air viscosity. The model is consistent with our data, but the calculation is complex. To address this issue, we propose a simplification, assuming atmospheric conditions and low viscosities, and show that the simplification gives an equally good prediction of the splashing velocity from a simple analytical formula.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑