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Experimental Study on Droplet Splash and Receding Breakup on a Smooth Surface at Atmospheric Pressure
Langmuir ( IF 3.9 ) Pub Date : 2021-09-01 , DOI: 10.1021/acs.langmuir.1c01797 Lei Yang 1 , Zhonghong Li 1 , Tao Yang 2 , Yicheng Chi 2 , Peng Zhang 2
Langmuir ( IF 3.9 ) Pub Date : 2021-09-01 , DOI: 10.1021/acs.langmuir.1c01797 Lei Yang 1 , Zhonghong Li 1 , Tao Yang 2 , Yicheng Chi 2 , Peng Zhang 2
Affiliation
Droplet impact on a smooth solid surface at atmospheric pressure was experimentally studied and physically interpreted. A particular emphasis of the study is on the effects of liquid viscosity on the transition between droplet deposition (or droplet spreading without breakup) and droplet disintegration (including droplet splash and receding breakup). Specifically, the critical Weber number separating droplet deposition from droplet disintegration decreases and then increases with increasing Ohnesorge number (Oh). The splash in the low-Oh region and the receding breakup in the high-Oh region were analyzed qualitatively based on the unbalanced forces acting on the rim of the spreading or receding liquid film. A semiempirical correlation of droplet deposition/disintegration thresholds is proposed and well fits the experimental results from previous and present studies over a wide range of liquid viscosity.
中文翻译:
大气压下光滑表面液滴飞溅和后退破碎的实验研究
大气压下液滴对光滑固体表面的影响进行了实验研究和物理解释。该研究的一个特别重点是液体粘度对液滴沉积(或液滴扩散而不破裂)和液滴崩解(包括液滴飞溅和后退破裂)之间过渡的影响。具体而言,将液滴沉积与液滴崩解分开的临界韦伯数随着 Ohnesorge 数 ( Oh ) 的增加而减少然后增加。低-哦区域的飞溅和高-哦区域的消退分手基于作用在扩散或后退液膜边缘的不平衡力,对区域进行了定性分析。提出了液滴沉积/分解阈值的半经验相关性,并且很好地拟合了先前和当前研究在广泛的液体粘度范围内的实验结果。
更新日期:2021-09-14
中文翻译:
大气压下光滑表面液滴飞溅和后退破碎的实验研究
大气压下液滴对光滑固体表面的影响进行了实验研究和物理解释。该研究的一个特别重点是液体粘度对液滴沉积(或液滴扩散而不破裂)和液滴崩解(包括液滴飞溅和后退破裂)之间过渡的影响。具体而言,将液滴沉积与液滴崩解分开的临界韦伯数随着 Ohnesorge 数 ( Oh ) 的增加而减少然后增加。低-哦区域的飞溅和高-哦区域的消退分手基于作用在扩散或后退液膜边缘的不平衡力,对区域进行了定性分析。提出了液滴沉积/分解阈值的半经验相关性,并且很好地拟合了先前和当前研究在广泛的液体粘度范围内的实验结果。