Non-axisymmetric oscillations of liquid bridges

Sanz, A.; Díez, Javier López

doi:10.1017/s0022112089002120

Cited by 87 publications

(52 citation statements)

References 14 publications

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“…The liquid column appears to oscillate laterally in agreement with results from Sanz and Lopez Diez (1989), with a period of T^t -4.8 ± 0.2 s and an amplitude of less than 2 mm at the antinode (midway between discs), without any major influence of the breaking process. Notice how perfect the matching of experimental shapes to the eigenfunction (A 2 -z 2 ) happens to be, because the shape residue, defined as the root mean square of all digitised deformations relative to the best-fit eigenfunction, has a mean white noise value of <1% (imperceptible at the scale in Fig.…”

Section: Resultssupporting

confidence: 83%

Wobbling of a liquid column between unequal discs

Martinez

Meseguer

Perales

2005

Advances in Space Research

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One of the most puzzling results of an experiment on the stability of long liquid columns under microgravity, performed aboard Spacelab-D2 in 1993 and named STACO, aiming at the analysis of deformations of nearly cylindrical liquid columns under several mechanical disturbances, is revisited here. It corresponds to the unexplained breakage of an 85 mm long liquid bridge of low viscosity silicone oil, established between unequal discs of 30 and 28 mm, intended to counterbalance the expected deformation by residual acceleration found in previous flights, and left idle because the vibrations and oscillations to be applied afterwards were not started, for fear of premature breakage. A detailed image analysis is performed to extract the maximum amount of data, to be able to check against available theories for axisymmetric and non-axisymmetric deformations of a liquid column.

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Section: Resultssupporting

confidence: 83%

Wobbling of a liquid column between unequal discs

Martinez

Meseguer

Perales

2005

Advances in Space Research

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“…Meseguer 1 studied axisymmetric liquid bridges that were close to their stability limits using an inviscid slice model. The axisymmetric and non-axisymmetric oscillations of liquid bridges were theoretically investigated by Sanz et al 25,26 . Later studies investigated the effects of finite viscosity on the dynamics of liquid bridges under different conditions, including forced oscillations 27,28 and stretching 6,29 .…”

Section: Introductionmentioning

confidence: 99%

A Combined Experimental and Numerical Modeling Study of the Deformation and Rupture of Axisymmetric Liquid Bridges under Coaxial Stretching

Zhuang

2015

Langmuir

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Abstract:The deformation and rupture of axisymmetric liquid bridges being stretched between two fully wetted coaxial disks are studied experimentally and theoretically. We numerically solve the time-dependent Navier-Stokes equations while tracking the deformation of the liquid-air interface using the Arbitrary Lagrangian-Eulerian (ALE) moving mesh method to fully account for the effects of inertia and viscous forces on bridge dynamics. The effects of the stretching velocity, liquid properties, and liquid volume on the dynamics of liquid bridges are systematically investigated to provide direct experimental validation of our numerical model for stretching velocities as high as 3 m/s. The Ohnesorge number (Oh) of liquid bridges is a primary factor governing the dynamics of liquid bridge rupture, especially the dependence of the rupture distance on the stretching velocity. The rupture distance generally increases with the stretching velocity, far in excess of the static stability limit. For bridges with low Ohnesorge numbers, however, the rupture distance stay nearly constant or decreases with the stretching velocity within certain velocity windows due to the relative rupture position switching and the thread shape change. Our work provides an experimentally validated modeling approach and experimental data to help establish foundation for systematic further studies and applications of liquid bridges.

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“…These studies are summarized in Table 1. Most of these papers are related to liquid bridges between coaxial, equal in diameter circular disks, the performed experiments being concerned with the dynamics of liquid bridges like the breaking [6], the liquid column oscillations, either axial [9] or lateral [12], or related aspects of the injection of liquid to form the bridge [14]. This equipment has been also used for hydrostatic studies, both for configurations between disks of equal diameter [11] and of unequal one [13].…”

Section: Plateau Tank Facilitymentioning

confidence: 99%