Study of underwater explosion near rigid cylinder column with numerical method

Li, Lingquan; Airaudo, Facundo N.; Löhner, Rainald

doi:10.1016/j.oceaneng.2022.113294

Cited by 10 publications

(1 citation statement)

References 57 publications

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“…To overcome this issue, THINC method is implemented in our compressible multiphase code. Following the successful implementation of this model in UNDEX problems with threefluid assumptions (Li et al, 2021c(Li et al, , 2023, an ALE method was formulated in Li et al (2022b) to study FSI.…”

Section: Hff 336mentioning

confidence: 99%

An arbitrary Lagrangian–Eulerian method for fluid–structure interactions due to underwater explosions

Löhner

Soto

et al. 2023

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Purpose This study aims to evaluate blast loads on and the response of submerged structures. Design/methodology/approach An arbitrary Lagrangian–Eulerian method is developed to model fluid–structure interaction (FSI) problems of close-in underwater explosions (UNDEX). The “fluid” part provides the loads for the structure considers air, water and high explosive materials. The spatial discretization for the fluid domain is performed with a second-order vertex-based finite volume scheme with a tangent of hyperbola interface capturing technique. The temporal discretization is based on explicit Runge–Kutta methods. The structure is described by a large-deformation Lagrangian formulation and discretized via finite elements. First, one-dimensional test cases are given to show that the numerical method is free of mesh movement effects. Thereafter, three-dimensional FSI problems of close-in UNDEX are studied. Finally, the computation of UNDEX near a ship compartment is performed. Findings The difference in the flow mechanisms between rigid targets and deforming targets is quantified and evaluated. Research limitations/implications Cavitation is modeled only approximately and may require further refinement/modeling. Practical implications The results demonstrate that the proposed numerical method is accurate, robust and versatile for practical use. Social implications Better design of naval infrastructure [such as bridges, ports, etc.]. Originality/value To the best of the authors’ knowledge, this study has been conducted for the first time.

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Section: Hff 336mentioning

confidence: 99%