Untitled

Bhola, R.; Chandra, Sanjeev

doi:10.1023/a:1004680315199

Cited by 123 publications

(29 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By considering a liquid droplet impact onto a hard floor, the maximally deformed droplet diameter D c at viscositydominant regime can be approximated by [22][23][24],…”

Section: Rayleigh-taylor Instabilitymentioning

confidence: 99%

Fingering induced by a solid sphere impact to viscous fluid

Katsuragi

2015

EPJ Web of Conferences

View full text Add to dashboard Cite

Abstract. The number of splashed fingers generated by a solid projectile's impact onto a viscous liquid layer is experimentally studied. A steel sphere is dropped onto a viscous liquid pool. Then, a fingering instability occurs around the crater's rim, depending on the experimental conditions such as projectile's inertia and the viscosity of the target liquid. When the impact inertia is not sufficient, any fingering structure cannot be observed. Contrastively, if the impact inertia is too much, the random splashing is induced and the counting of fingers becomes difficult. The clear fingering instability is observable in between these two regimes. The number of fingers N is counted by using high-speed video data. The scaling of N is discussed on the basis of dimensionless numbers. By assuming Rayleigh-Taylor instability, scaling laws for N can be derived using Reynolds number Re, Weber number We, and Froude number Fr. Particularly, the scaling N = (ρ r Fr) 1/4 We 1/2 /3 3/4 is obtained for the gravity-dominant cratering regime, where ρ r is the density ratio between a projectile and a target. Although the experimental data considerably scatters, the scaling law is consistent with the global trend of the data behavior. Using one of the scaling laws, planetary nano crater's rim structure is also evaluated.

show abstract

“…By considering a liquid droplet impact onto a hard floor, the maximally deformed droplet diameter D c at viscositydominant regime can be approximated by [22][23][24],…”

Section: Rayleigh-taylor Instabilitymentioning

confidence: 99%

Fingering induced by a solid sphere impact to viscous fluid

Katsuragi

2015

EPJ Web of Conferences

View full text Add to dashboard Cite

show abstract

“…Researchers have extensively studied the fingering instability that occurs as a splash is created [12,13,14,15]. "Fingers" mean long protrusions at the rim of the expanding liquid film.…”

Section: Number Of Undulations Versus Pressurementioning

confidence: 99%

Liquid drop splashing on smooth, rough, and textured surfaces

2007

Phys. Rev. E

207

167

View full text Add to dashboard Cite

Splashing occurs when a liquid drop hits a dry solid surface at high velocity. This paper reports experimental studies of how the splash depends on the roughness and the texture of the surfaces as well as the viscosity of the liquid. For smooth surfaces, there is a "corona" splash caused by the presence of air surrounding the drop. There are several regimes that occur as the velocity and liquid viscosity are varied. There is also a "prompt" splash that depends on the roughness and texture of the surfaces. A measurement of the size distribution of the ejected droplets is sensitive to the surface roughness. For a textured surface in which pillars are arranged in a square lattice, experiment shows that the splashing has a four-fold symmetry. The splash occurs predominantly along the diagonal directions. In this geometry, two factors affect splashing the most: the pillar height and spacing between pillars.

show abstract

“…One important characteristic is the spread diameter of droplets after impact. Many experimental studies [8][9][10][11][12] have been conducted to study the impact dynamics of droplets, while analytical models were developed to predict the spread of droplets [13][14][15]. However, little attention has been paid to the surface characteristics of droplets after impact and solidification.…”

Section: Introductionmentioning

confidence: 99%