Liquid-bridge shape stability by energy bounding

Bostwick, Joshua; Steen, Paul H.

doi:10.1093/imamat/hxv016

Cited by 9 publications

(2 citation statements)

References 25 publications

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“…Stickiness, in particular, is characterized by three parameters: maximum stickiness value Lmax, maximum sticking moisture wmax and initial sticking moisture w0 [18]. Stickiness does not appear when the moisture is below w0, at which the water pressures are equal in the form of a "film" (pʹ) and a "cuff" (pʹʹ) [19,20]. Sticking occurs at moisture values w > w0 as a result of the pressure difference ∆p=pʹʹ-pʹ which taking into account ( 8), ( 9) and (10), is obtained in the form…”

Section: Methodsmentioning

confidence: 99%

Formation conditions and parameters of mini-landslides on agricultural slope landscapes

Chuchkalov,

Mikhailov,

Lvova

et al. 2023

E3S Web Conf.

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The paper investigated the stability of agricultural land slopes to mini-shear landslides on the basis of a numerical assessment of the influence of soil parameters in the Volga-Vyatka region of Russia on its frictional properties. It has been established that at a moisture content of 0.30 ± 0.04 m3/m3 of gray forest soil and 0.22 ± 0.04 m3/m3 of soddy-podzolic soil, the contribution of soil stickiness to the soil friction coefficient was the most significant, which was due both to the aggregation of soil particles and to the destruction of soil capillaries, and corresponded to the lower limit of soil plasticity. On the basis of the ratio proposed in the paper, a numerical assessment of the ratio of the power and length of the landslide along the slope for different slope angles was carried out, the results of which correspond to real landslide processes on natural and artificial slopes of agricultural land.

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Section: Methodsmentioning

confidence: 99%

Formation conditions and parameters of mini-landslides on agricultural slope landscapes

Chuchkalov,

Mikhailov,

Lvova

et al. 2023

E3S Web Conf.

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“…The interplay between temperature gradients and surface tension forces gives rise to intriguing fluid flow patterns and transport phenomena, making TCC an area of significant interest in both fundamental and applied research. A large number of theoretical and experimental papers have been published over time to study the behaviour of liquid bridges in microgravity environments, but most have only considered the behaviour of axially symmetric liquid bridges [1][2][3], with only a few studies of the behaviour of non-axially symmetric liquid bridges [4,5] and of special forms of liquid bridges [6][7][8]. Lowry and Steen [9] extended the application to capillary surfaces from axisymmetric liquid bridges to droplets and non-axisymmetric liquid bridges.…”

Section: Introductionmentioning

confidence: 99%

Influence of gravitational tilt on the thermocapillary convection in a non-axisymmetric liquid bridge

Yang,

Zhang,

Cui

et al. 2024

New J. Phys.

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Fluid slosh caused by residual acceleration in microgravity is a common problem encountered in space engineering. To solve this problem, the ground-based experiment research on the influence of gravity jitter and gravitational tilt on the thermocapillary convection (TCC) transition behavior of non-axisymmetric liquid bridge has become an important issue in microgravity fluid management. Based on a mesoscale liquid bridge experimental platform which can realize gravitational tilt, the effect of gravitational tilt on TCC by using a high-speed camera equipped with a near-focus lens and a self-developed interface image recognition package. The results show that the spatio-temporal evolution of TCC by the influence of gravitational tilt is still divided into steady and oscillatory flow. In the stable TCC, the vortex core distortion of cellular flow caused by the imbalance left and right interface curvature invites cellular flow close to the free surface, and it shrinks to the intermediate height. As gravitational tilt increases, the transverse/longitudinal velocity peaks are significantly reduced, peak velocity has been reduced by 26-27%. Meanwhile, the longitudinal velocity gradient at the free interface increases significantly. Therefore, gravitational tilt plays an important role in improving the surface flow velocity. In the oscillatory TCC, the position of vortex core is closer to the free interface at the hot/cold corner as the periodic mutual occupation of the left and right cellular flows. The TCC is obviously inhibited due to the gravitational tilt. The critical temperature difference is increased by 25% and the onset of temperature oscillation at the hot corner is delayed by 20% compared with conventional gravity condition.

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Scaling analysis of the Plateau–Rayleigh instability in thin film flow down a fiber

Gabbard

Bostwick

2021

Exp Fluids

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Liquid-bridge shape stability by energy bounding

Cited by 9 publications

References 25 publications

Formation conditions and parameters of mini-landslides on agricultural slope landscapes

Formation conditions and parameters of mini-landslides on agricultural slope landscapes

Influence of gravitational tilt on the thermocapillary convection in a non-axisymmetric liquid bridge

Scaling analysis of the Plateau–Rayleigh instability in thin film flow down a fiber

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