Numerical simulation of underwater explosions using an ALE method. The pulsating bubble phenomena

Barras, Guillaume; Souli, M’hamed; Aquelet, Nicolas; Couty, N.

doi:10.1016/j.oceaneng.2011.12.015

Cited by 89 publications

(25 citation statements)

References 50 publications

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“…Many researchers have performed underwater explosion simulations to study bubble pulsation. [5][6][7][8] Most underwater explosion simulations base on forward problem, and detonation product EOS parameters are of importance and necessity in the forward simulations. [9][10][11][12] Standard method of characteristics is a classical calculation method and has clear physical significance.…”

Section: Introductionmentioning

confidence: 99%

A modified method of characteristics and its application in forward and inversion simulations of underwater explosion

Zhang

Chao

2016

AIP Advances

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This paper introduces a modified method of characteristics and its application in forward and inversion simulations of underwater explosion. Compared with standard method of characteristics which is appropriate to homoentripic flow problem, the modified method can be also used to deal with isentropic flow problem such as underwater explosion. Underwater explosion of spherical TNT and composition B explosives are simulated by using the modified method, respectively. Peak pressures and flow field pressures are obtained, and they are coincident with those from empirical formulas. The comparison demonstrates the modified is feasible and reliable in underwater explosion simulation. Based on the modified method, inverse difference schemes and inverse method are introduced. Combined with the modified, the inverse schemes can be used to deal with gas-water interface inversion of underwater explosion. Inversion simulations of underwater explosion of the explosives are performed in water, and equation of state (EOS) of detonation product is not needed. The peak pressures from the forward simulations are provided as boundary conditions in the inversion simulations. Inversion interfaces are obtained and they are mainly in good agreement with those from the forward simulations in near field. The comparison indicates the inverse method and the inverse difference schemes are reliable and reasonable in interface inversion simulation.

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Section: Introductionmentioning

confidence: 99%

A modified method of characteristics and its application in forward and inversion simulations of underwater explosion

Zhang

Chao

2016

AIP Advances

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“…Barras et al (2012) study the dynamics of the high pressure and high temperature gas bubble formed upon the detonation in an infinite medium (i.e. they did not consider any interactions with water surface).…”

Section: Physical Model Of Underwater Explosionmentioning

confidence: 99%

Numerical simulations of tsunamis generated by underwater volcanic explosions at Karymskoye lake (Kamchatka, Russia) and Kolumbo volcano (Aegean Sea, Greece)

Ulvrová

Paris

Kelfoun

et al. 2014

Nat. Hazards Earth Syst. Sci.

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Abstract. Increasing human activities along the coasts of the world provoke the necessity to assess tsunami hazard from different sources (earthquakes, landslides, volcanic activity). In this paper, we simulate tsunamis generated by underwater volcanic explosions from (1) a submerged vent in a shallow water lake (Karymskoye Lake, Kamchatka), and (2) from Kolumbo submarine volcano (7 km NE of Santorini, Aegean Sea, Greece). The 1996 tsunami in Karymskoye lake is a well-documented example and thus serves as a case study for validating the calculations. The numerical model reproduces realistically the tsunami run-ups measured onshore. Systematic numerical study of tsunamis generated by explosions of the Kolumbo volcano is then conducted for a wide range of energies. Results show that in case of reawakening, the Kolumbo volcano might represent a significant tsunami hazard for the northern, eastern and southern coasts of Santorini, even for small-power explosions.

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“…The availability of many materials in this technique allowed the simultaneous simulation of three materials, explosive gas product, air, and water, in the same Eulerian domain [12]. The numerical methodology to model and study the bubble dynamics produced by an underwater explosion when it occurs in infinite medium with any surrounding obstacle as the free surface, the seabed or deformable structures (surface ship or submarine) were indicated by G. Barras (2012) [13]. The Euler-Lagrangian approaches were also developed in the 1980s.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response of Air Cushion Vehicle s Skirt under High Pressure Bubble Impact

Hsu¹,

Liang²,

Nguyen³

et al. 2017

Seventh International Conference on Advances in Civil and Structural Engineering - CSE 2017

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Numerical simulation of underwater explosions using an ALE method. The pulsating bubble phenomena

Cited by 89 publications

References 50 publications

A modified method of characteristics and its application in forward and inversion simulations of underwater explosion

A modified method of characteristics and its application in forward and inversion simulations of underwater explosion

Numerical simulations of tsunamis generated by underwater volcanic explosions at Karymskoye lake (Kamchatka, Russia) and Kolumbo volcano (Aegean Sea, Greece)

Dynamic Response of Air Cushion Vehicle s Skirt under High Pressure Bubble Impact

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