Improved three-dimensional bubble dynamics model based on boundary element method

Zhang, A-Man; Liu, Yunlong

doi:10.1016/j.jcp.2015.03.049

Cited by 174 publications

(90 citation statements)

References 27 publications

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“…Different cases are shown in Figure 6. If 1 = 2 = 0, it indicates that the input wave is not transmitted into medium 1 . If 1 ≥ 1 and 2 = 0, the wave transmits from water into medium 1 and propagates 1 times in medium 1 only.…”

Section: Response Of Three Substructures Prior To the Onset Of Firstmentioning

confidence: 99%

“…This is due to the fact that the panel with girder (Ishaped) has a larger unit mass. Figure 12(a) shows nondimensional time histories of nondimensional wet surface pressure (1) wet , while the corresponding time histories of nondimensional velocity V (1) wet are presented in Figure 12(b). As discussed above, in this particular case the first cavitation takes place at a location very close to the wet surface.…”

Section: Closing Front and Breaking Frontmentioning

confidence: 99%

“…A considerable amount of literature exists on the feature of underwater explosion load and the dynamic response of ship structure subjected to underwater explosion [1][2][3][4][5][6][7]. The dynamic response of double-bottom hull to underwater explosion is of great interest to the defense of military naval vessels.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analytical Models for the Response of the Double-Bottom Structure to Underwater Explosion Based on the Wave Motion Theory

Chen

Yao

Xiao

2016

Shock and Vibration

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The aim of this paper is to apply the elastic wave motion theory and the classical one-dimensional cavitation theory to analyze the response of a typical double-bottom structure subjected to underwater blast. The section-varying bar theory and the general acoustic impedance are introduced to get the simplified analytical models. The double-bottom structure is idealized by the basic unit of three substructures which include the simple panel, the panel with stiffener (T-shaped), and the panel associated with girder (I-shaped). According to the simplified models, the analytical models for the corresponding substructures are set up. By taking the cavitation effect into account, the process of fluid-structure interaction can be thoroughly understood, as well as the stress wave propagation. Good agreement between the analytical solution and the finite element prediction is achieved. On the other hand, the Taylor predictions for the panel associated with girder (I-shaped) including the effects of cavitation are invalid, indicating a potential field for the analytical method. The validated analytical models are used to determine the sensitivity of structure response to dimensionless geometric parameters ( ) , ( ) , and ( ) . Based on the dynamic response of the substructures, we establish the approximate analytical models which are able to predict the response of double-bottom structure to underwater explosion.

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Section: Response Of Three Substructures Prior To the Onset Of Firstmentioning

confidence: 99%

Section: Closing Front and Breaking Frontmentioning

confidence: 99%

See 1 more Smart Citation

Analytical Models for the Response of the Double-Bottom Structure to Underwater Explosion Based on the Wave Motion Theory

Chen

Yao

Xiao

2016

Shock and Vibration

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“…A strong discontinuous shock wave (Ming et al, 2016;Zhang et al, 2011;Kim and Shin, 2008;Narasimhan, 2001, 2006;Ghoshal and Mitra, 2016;Hung et al, 2005Hung et al, , 2009Zhang et al, 2015a;Zhang and Liu, 2015) and a high-speed metal jet (Arnold and Rottenkolber, 2013;Feng et al, 2013;Molinari, 2002;Chen and Liu, 2012;Yang et al, 2016;Baêta-Neves and Ferreira, 2015;Miyoshi, 2008) can be generated by a shaped charge associated with underwater explosion, which can cause damage in structures. In researches of a shock wave caused by underwater explosion, Zhang et al (Ming et al, 2016;Zhang et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Application of Smoothed Particle Hydrodynamics in analysis of shaped-charge jet penetration caused by underwater explosion

et al. 2017

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“…In recent years, many works have been developed to investigate the interaction between collapsing bubble and non-planar solid wall [1] [4], and numerical methods are becoming more and more important tools to study the bubble collapse near solid wall [5] [6]. Commonly used numerical methods include the finite volume method (FVM) [4], the finite element method (FEM) [7], and the boundary element method (BEM) [8]. These macroscopic numerical modeling methods based on solving partial differential equations are limited in processing the multiphase flows and complex geometry boundary conditions.…”

Section: Introductionmentioning

confidence: 99%

Modeling for Collapsing Cavitation Bubble near Rough Solid Wall by Mulit-Relaxation-Time Pseudopotential Lattice Boltzmann Model

Shan¹,

Zhu²,

Yao³

et al. 2017

JAMP

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Cavitation bubble collapse near rough solid wall is modeled by the multi-relaxation-time (MRT) pseudopotential lattice Boltzmann (LB) model. The modified forcing scheme, which can achieve LB model's thermodynamic consistency by tuning a parameter related with the particle interaction range, is adopted to achieve desired stability and density ratio. The bubble collapse near rough solid wall was simulated by the improved MRT pseudopotential LB model. The mechanism of bubble collapse is studied by investigating the bubble profiles, pressure field and velocity field evolution. The eroding effects of collapsing bubble are analyzed in details. It is found that the process and the effect of the interaction between bubble collapse and rough solid wall are affected seriously by the geometry of solid boundary. At the same time, it demonstrates that the MRT pseudopotential LB model is a potential tool for the investigation of the interaction mechanism between the collapsing bubble and complex geometry boundary.

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Improved three-dimensional bubble dynamics model based on boundary element method

Cited by 174 publications

References 27 publications

Analytical Models for the Response of the Double-Bottom Structure to Underwater Explosion Based on the Wave Motion Theory

Analytical Models for the Response of the Double-Bottom Structure to Underwater Explosion Based on the Wave Motion Theory

Application of Smoothed Particle Hydrodynamics in analysis of shaped-charge jet penetration caused by underwater explosion

Modeling for Collapsing Cavitation Bubble near Rough Solid Wall by Mulit-Relaxation-Time Pseudopotential Lattice Boltzmann Model

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