High velocity impingement of single droplets on a dry smooth surface

Faßmann, Benjamin; Bansmer, Stephan; Möller, Thorsten; Radespiel, Rolf; Hartmann, Michael

doi:10.1007/s00348-013-1516-4

Cited by 16 publications

(17 citation statements)

References 27 publications

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“…In the robust splashing regime, it becomes challenging to determine the number of fingers, as is clear in the snapshots in Figure 7(c). Same technique is used by Fassmann et al (2013) to study sizes of splashed droplets. Even higher impact velocities (∼ 100 m/s) of microdrops have been achieved by Visser et al (2012), by exploiting laser-produced jetting (Thoroddsen et al (2009)).…”

Section: Fingeringmentioning

confidence: 99%

Drop Impact on a Solid Surface

Josserand

Thoroddsen

2016

Annu. Rev. Fluid Mech.

1,195

732

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Section: Fingeringmentioning

confidence: 99%

Drop Impact on a Solid Surface

Josserand

Thoroddsen

2016

Annu. Rev. Fluid Mech.

1,195

732

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“…Later, Mehdizadeh et al [7] observed that the maximum spreading diameter increased with the temperature. More recently, another experimental investigation was performed by Fassmann et al [3]. In this study, the secondary droplets were analyzed using a shadowgraph and statistical techniques for We = 3, 500, We = 5, 000, and We = 10, 000.…”

Section: Introductionmentioning

confidence: 99%

“…The goal of the present work is to close this gap of information, analyzing the splashing in detail for three different regimes: We = 3, 500, We = 5, 000, and We = 10, 000. The Weber numbers were chosen according to Faßmann et al [3]. The outcome of this work would help to develop new theoretical models and validate numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

High Speed Visualization of Droplets Impacting with a Dry Surface at High Weber Numbers

Burzynski

Bansmer

2017

Notes on Numerical Fluid Mechanics and Multidisciplinary Design

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The focus of this article is to describe the evolution of the spreading diameter and secondary droplets generated by splashing. High-speed visualization was used to study the time evolution of water droplets impacts with dry surfaces at Weber numbers between 3,500 and 10,000. Different prediction models of the maximal spreading diameter have been compared with each other and with the experimental data. A similarity between the spreading rates was observed in the last stage of the impact at high Weber numbers. The time evolution of the secondary droplets and the formation of the crown was observed and analyzed at the different Weber numbers.

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“…Based on Motzkus et al [24] , increasing liquid viscosity has the same effect on the diameter of the splashing droplets as surface tension. Faßmann et al [12] demonstrated that the diameter of the splashing droplets decreases while the velocity increases with the increase in impact velocity.…”

Section: Introductionmentioning

confidence: 99%

Splashing generation by water jet impinging on a horizontal plate

Qian

Zhu

2022

Experimental Thermal and Fluid Science

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The report of COVID-19 virus in municipal wastewater raises the question of whether viruses can become airborne during wastewater transport in sewer systems. The present work experimentally investigates a water jet impinging vertically onto a horizontal plate and the behaviours of the generated tiny droplets. Depending on whether the jet breaks into primary drops before the impingement, three regimes can be defined: non-splashing, jet-splashing and drop-splashing regimes. The splashing ratio, i.e., the portion of jet flow rate becoming splashing droplets, ranges from 1% – 70% in the drop-splashing regime, while it remains less than 2% in the jet-splashing regime. For the splashing droplets, their size and velocity distributions follow log-normal laws. Their diameters are mainly in the range from 0 to 0.3 of the impact jet or drop diameter with the median less than 0.1. Their velocities mostly range from 0 to 3.0 times of the impact velocity with the median around 1.0. The medians of both the dimensionless diameter and velocity of splashing droplets decrease with the impact Weber number. The ejection angles of splashing droplets obey a bell-shaped distribution with the maximum around 70° and the median ranging from 16° to 30°.

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High velocity impingement of single droplets on a dry smooth surface

Cited by 16 publications

References 27 publications

Drop Impact on a Solid Surface

Drop Impact on a Solid Surface

High Speed Visualization of Droplets Impacting with a Dry Surface at High Weber Numbers

Splashing generation by water jet impinging on a horizontal plate

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