Confined Shocks inside Isolated Liquid Volumes -- A New Path of Erosion?

  title={Confined Shocks inside Isolated Liquid Volumes -- A New Path of Erosion?},
  author={Danail Obreschkow and Nicolas Dorsaz and Philippe Kobel and Aur{\`e}le De Bosset and Marc Tinguely and John Edwin Field and Mohamed Farhat},
  journal={arXiv: Fluid Dynamics},
The unique confinement of shock waves inside isolated liquid volumes amplifies the density of shock-liquid interactions. We investigate this universal principle through an interdisciplinary study of shock-induced cavitation inside liquid volumes, isolated in 2 and 3 dimensions. By combining high-speed visualizations of ideal water drops realized in microgravity with smoothed particle simulations we evidence strong shock-induced cavitation at the focus of the confined shocks. We extend this… 

Figures from this paper

Outcomes following single bubble collapse in a rigid tube
Following the collapse of a vapour bubble inside a rigid tube, various outcomes could be caused by the propagation and reflection of the shock wave. Using high-speed camera system and hydrophone, the
Numerical study of a planar shock interacting with a cylindrical water column embedded with an air cavity
This paper performs a numerical study on the interaction of a planar shock wave with a water column embedded with/without a cavity of different sizes at high Weber numbers. The conservative-type
Simulation of high-speed droplet impact against a dry/wet rigid wall for understanding the mechanism of liquid jet cleaning
Physical cleaning techniques are of great concern to remove particulate contamination because of their low environmental impact. One of the promising candidates is based on water jets that often
One-way-coupling simulation of cavitation accompanied by high-speed droplet impact
Erosion due to high-speed droplet impact is a crucial issue in industrial applications. The erosion is caused by the water-hammer loading on material surfaces and possibly by the reloading from
Curved surface effect on high-speed droplet impingement
Abstract In the present study, high-speed droplet impingement on typical curved surfaces is numerically investigated to analyse the inherent complex wave structures and cavitation. A three-component
Impingement of high-speed cylindrical droplets embedded with an air/vapour cavity on a rigid wall: numerical analysis
The high-speed impingement of hollow droplets embedded with a cavity has fundamental applications in various scenarios, such as in spray coating and biomedical engineering. The impingement dynamics
Prediction and numerical simulation of droplet impact erosion on metallic structure
The aim of this work is to understand the erosion mechanism caused by repeated water droplets impingement on a metallic structure, and then perform numerical simulations of the damage. When a high
On high-speed impingement of cylindrical droplets upon solid wall considering cavitation effects
The high-speed impingement of droplets on a wall occurs widely in nature and industry. However, there is limited research available on the physical mechanism of the complicated flow phenomena during
What We Learned from Cavitation Bubbles in Microgravity
The present chapter is about the Flash and Splash project, which is dedicated to the study of bubble dynamics in microgravity. The story of this project started in 2004 with a simple curiosity on how
The quest for the most spherical bubble: experimental setup and data overview
We describe a recently realized experiment producing the most spherical cavitation bubbles today. The bubbles grow inside a liquid from a point plasma generated by a nanosecond laser pulse. Unlike in


Cavitation bubble dynamics inside liquid drops in microgravity.
Bubble lifetimes in drops are shorter than in extended volumes in remarkable agreement with herein derived corrective terms for the Rayleigh-Plesset equation.
Cavitation Bubble Collapse inside Liquid Spheres in Microgravity
We report a fundamental study of single cavitation bubbles inside quasi-spherical water drops produced in microgravity (42nd ESA parabolic flight campaign, 8th ESA student parabolic flight campaign).
Cavitation bubble behavior inside a liquid jet
The growth and collapse of laser-induced vapor cavities inside axisymmetric free-falling liquid water jets have been studied. Bubbles of different size are generated at various distances from the jet
Shock wave induced interaction of microbubbles and boundaries
In the present study we experimentally investigate bubble dynamics after laser induced shock wave exposure in the vicinity of salt crystals suspended in water. High-speed microscopic images show
The impact and penetration of a water surface by a liquid jet
  • N. Bourne, T. Obara, J. Field
  • Engineering
    Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
  • 1996
It is well known, that a high velocity jet threads a spherical bubble during asymmetric collapse. The early phases of jet formation and travel have been investigated by several workers. The final
Computational study of high-speed liquid droplet impact
We are investigating the fluid dynamics of high-speed (500 m/s) small size (200 μm in diameter) droplet impact on a rigid substrate. Utilizing a high-resolution axisymmetric solver for the Euler
Studies of two-dimensional liquid-wedge impact and their relevance to liquid-drop impact problems
  • J. Field, M. Lesser, J. Dear
  • Physics
    Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences
  • 1985
In the initial stage of liquid-drop impact, the contact region expands faster than the wave speed in the liquid. This causes compressible behaviour in the liquid, and high transient pressures.
Secondary cavitation due to interaction of a collapsing bubble with a rising free surface
An experimental investigation was made of the motion of a cavitation bubble in the vicinity of a free surface in order to study an induced secondary cavitation during the bubble rebound. A bubble was
Cavitation within a droplet
The rapid dynamics of vapor bubbles, the so-called cavitation bubbles, in confined geometries may lead to surprisingly rich dynamics. The example presented here in Fig. 1 a shows a cavitation bubble
The effects of target compliance on liquid drop impact
When a liquid drop impacts a solid surface, the contact periphery at first expands more quickly than the compression wavefronts in either liquid or solid. The liquid behind the shock envelope is