Analysis of bubbles dynamics created by Hydrodynamic Ram in confined geometries using the Rayleigh–Plesset equation

Fourest, Thomas; Laurens, Jean-Marc; Deletombe, E.; Dupas, Jacques; Арригони, М.

doi:10.1016/j.ijimpeng.2014.05.008

Cited by 49 publications

(25 citation statements)

References 17 publications

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“…The bubble dynamics seem to be comparable to those observed during underwater explosions [17]. These bubble dynamics were then described using a modified version of the Rayleigh-Plesset (RP) equation introducing a confinement effect of the container on the bubble developments that are presented in [18]. The object of the present study is to discuss the confinement parameter which has been introduced in this confined version of the classic Rayleigh-Plesset equation for bubble dynamics, that is applied to bubbles created by ballistic impacts.…”

Section: Introductionmentioning

confidence: 84%

“…Young modulus e thickness of the spherical shell E k kinetic energy of the liquid M x ; M y momentum on the sides of the plates P pressure in the liquid R radius r radial coordinate of fluid particle V volume w bending of the plate A modification of the classic Rayleigh-Plesset equation has been proposed in [18] to account for confinement effects without changing the resolution method. To obtain this equation and use it to predict HRAM bubble dynamics, a spherical gas bubble in a spherical finite domain of liquid is first considered (see Fig.…”

Section: Nomenclaturementioning

confidence: 99%

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Confined Rayleigh–Plesset equation for Hydrodynamic Ram analysis in thin-walled containers under ballistic impacts

Fourest

Laurens

Deletombe

et al. 2015

Thin-Walled Structures

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Section: Introductionmentioning

confidence: 84%

Section: Nomenclaturementioning

confidence: 99%

Confined Rayleigh–Plesset equation for Hydrodynamic Ram analysis in thin-walled containers under ballistic impacts

Fourest

Laurens

Deletombe

et al. 2015

Thin-Walled Structures

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“…In liquids, the impact of a projectile flying across a vessel full of liquid is known to induce the formation of bubbles and its latter collapse. 23 For instance, Dear and Field 24 have used the "tube arrest" method 25 to study both the collapse of a single cavity and an array of cavities contained between two transparent plates after the impact of a slider. 26 Using a water/gelatine mixture, they were able to control several parameters such as the shape and the size of the bubbles.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the collapse of bubbles after the impact of a piston on a liquid free surface

et al. 2017

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We describe a novel technique based on the impact of a piston on a liquid confined in a vessel. Pressure measurements reveal that strong pressure variations (up to 100 atmospheres) with a rich content of frequencies are efficiently transmitted to the liquid. High-speed camera visualizations show that pre-existing millimetric bubbles always collapse during the first instants of the impact whereas the behavior of submillimetric bubbles depends on the features of the pressure evolution in the system. In addition to the impact velocity, the amount of * Corresponding author: fuster@dalembert.upmc.fr 1 gas/vapor trapped between the piston and the liquid's surface plays an important role on how pressure evolves. Only when negative pressure occurs bubbles grow significantly and collapse. The violent collapse of bubbles promote turbulence and mixing at very small length-scales which renders this technique interesting to intensify processes limited by heat and mass diffusion.

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“…Recent experimental results, in particular those presented in Deletombe et al [2], permitted to observe the evolution of the bubble created in the wake of a tumbling projectile. Since the bubble dynamics is due to a prompt release of a high energy, like during underwater explosions Cole [6], a RayleighPlesset like model is chosen to describe this phenomenon Fourest et al [7].…”

Section: Introductionmentioning

confidence: 99%

Prediction of thermal effects of magnitude for HRAM event in fuel-filled tank using the rayleigh-plesset equation

Fourest¹,

Арригони²,

Deletombe³

et al. 2016

Int. J. CMEM

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To reduce the vulnerability of both civilian and military aircraft, it is important to take the hydrodynamic ram (HRAM) effect into account when designing their fuel tanks. HRAM is especially dangerous for liquid-filled thin walled lightweight structures that cannot be armoured due to weight penalty reasons. However, the response of the tank structure during HRAM events depends on a coupling model between fluid and structure. Water is generally used as a liquid candidate for experimental observations of HRAM, since it is a safe and affordable solution. However, its characteristics in thermal transfers are far different from the ones of hydrocarbons, and it may influence the bubble behaviour and thus its resulting loading on the tank walls. A good understanding of all these aspects is still needed to enhance the tank designs. Similarities in bubble behaviour between HRAM and underwater explosion situations were observed in recent high-speed tank penetration/water entry experiments. A confined version of the Rayleigh-Plesset equation-which is classically used for bubble dynamics analysis (including underwater explosion)-has been previously proposed to simulate a bubble created by an HRAM event. The work the presented work is a first attempt to the estimation of the influence of thermal effects in HRAM processes, by using the Rayleigh-Plesset equation in confined regime.

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Analysis of bubbles dynamics created by Hydrodynamic Ram in confined geometries using the Rayleigh–Plesset equation

Cited by 49 publications

References 17 publications

Confined Rayleigh–Plesset equation for Hydrodynamic Ram analysis in thin-walled containers under ballistic impacts

Confined Rayleigh–Plesset equation for Hydrodynamic Ram analysis in thin-walled containers under ballistic impacts

Investigation of the collapse of bubbles after the impact of a piston on a liquid free surface

Prediction of thermal effects of magnitude for HRAM event in fuel-filled tank using the rayleigh-plesset equation

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