The dynamic behaviors of a bubble in a confined domain

Liu, N.N.; Ming, Fu-Ren; Liu, L.T.; Ren, Shiquan

doi:10.1016/j.oceaneng.2017.08.021

Cited by 24 publications

(1 citation statement)

References 40 publications

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“…Method. Actually, the process of underwater explosion near structures is a complicated fluid-structure interaction (FSI) problem [22,23]. Two sorts of methods are usually used to solve this problem, namely, the Lagrangian method and Eulerian method [11,24].…”

Section: Coupled Eulerian and Lagrangianmentioning

confidence: 99%

Study on the Pressure Characteristics of Shock Wave Propagating across Multilayer Structures during Underwater Explosion

Meng

Cao

Ming

et al. 2019

Shock and Vibration

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e propagation of the shock wave across multilayer structures during underwater explosion is a very complex physical phenomenon, involving violent fluid-structure interaction (FSI) problems. In this paper, the coupled Eulerian-Lagrangian (CEL) method in AUTODYN is used to simulate the process of shock wave propagation and solve FSI problems. Firstly, the governing equation and the treatment of fluid and structure interface of the CEL method are briefly reviewed. Afterwards, two underwater explosion numerical models are established, and the results are compared with the empirical formula and experimental data, respectively, to verify the reliability of numerical solutions. e results obtained by this method show good agreements with those of the empirical formula and experiment. Furthermore, the model of the multilayer structures composed of two hemispherical shells and the fluid filled between the shells subjected to underwater explosion is established, and the pressure characteristics of the shock wave propagating across the multilayer structures are analyzed regarding the wave reflection and transmission. Finally, the effects of the shell thickness and the filled fluid type among the multilayer structures on the wave reflection and transmission are studied.

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