Dynamic Response of Floating Body Subjected to Underwater Explosion Bubble and Generated Waves with 2D Numerical Model

Tian, Zhao-Li; Liu, Yunlong; Wang, Shiping; Zhang, A Man; Kang, Yong

doi:10.31614/cmes.2019.04419

Cited by 9 publications

(5 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finally, Lagrangian and Eulerian nodes are applied the penalty force for further calculation. The penalty force is defined as [26]:…”

Section: Fig 2 Combination Of Eulerian and Lagrangian Elements [32]mentioning

confidence: 99%

See 1 more Smart Citation

A numerical research on the interaction between underwater explosion bubble and deformable structure using CEL technique

Nguyen

2023

Eureka: PE

View full text Add to dashboard Cite

The dynamic process of an underwater explosion (UNDEX) bubble in the vicinity of deformable structures is a complex phenomenon that has been studied by many researchers. The dynamic process of a UNDEX bubble is a complex transient problem that results in a highly distorted bubble and large deformation of the structure. The previous work has introduced various solutions for studying the interaction between the UNDEX bubble and deformable structure. The interaction between the bubble and nearby structures has been widely solved by the combination of the boundary element method (BEM) and the finite element method (FEM). However, this couple requires tight time-step controlling, long-time analysis, and large computer resources. Furthermore, this combination is not widely used as the FEM code in commercially available software for solving UNDEX bubble problems. This paper presents a coupled Eulerian-Lagrangian (CEL) approach in commercial software to deal with the fluid-structure interaction (FSI). The numerical model of a UNDEX bubble is first developed and verified by comparing results with experimental, BEM, and empirical data. Then both bubble behavior and structural deformation are examined in various case studies. The numerical results show that the stiffness of the structure has strongly influenced the bubble behavior and the water jet development. The pressure pulse becomes significantly large as the bubble collapse. Besides, this numerical approach also can reproduce crucial phenomena of a UNDEX bubble, such as the whipping effect and water jet attacks. Although the numerical model is developed using simplified boundary conditions, the proposed approach shows the feasibility of simulating the important features of a UNDEX bubble process as well as the response of nearby structures.

show abstract

“…Finally, Lagrangian and Eulerian nodes are applied the penalty force for further calculation. The penalty force is defined as [26]:…”

Section: Fig 2 Combination Of Eulerian and Lagrangian Elements [32]mentioning

confidence: 99%

“…This model was also accompanied by the mode-decomposition method for calculating the FSI. The influence of both buoyancy and distance parameters on bubble oscillation, jet attack, and slamming load produced by the waves were investigated [26]. A novel approach that should be cited here is a hybrid algorithm.…”

Section: Introductionmentioning

confidence: 99%

A numerical research on the interaction between underwater explosion bubble and deformable structure using CEL technique

Nguyen

2023

Eureka: PE

View full text Add to dashboard Cite

show abstract

“…In terms of numerical simulations, significant efforts have been made in recent years. [20][21][22][23][24][25][26] Wang 27 analyzed the motion of bubbles with a free surface near an inclined solid wall with the boundary element method (BEM), which provides a reference for studying the interaction between the bubble and mixed boundaries. However, this work assumed that the wall is semi-infinite, with no influence from a bottom surface.…”

Section: Articlementioning

confidence: 99%

The jet characteristics of bubbles near mixed boundaries

Wang

2019

Physics of Fluids

View full text Add to dashboard Cite

Where a licence is displayed above, please note the terms and conditions of the licence govern your use of this document. When citing, please reference the published version. Take down policy While the University of Birmingham exercises care and attention in making items available there are rare occasions when an item has been uploaded in error or has been deemed to be commercially or otherwise sensitive.

show abstract

“…Since the last century, bubble dynamics [1][2][3][4] has been receiving increasing attention from researchers, and it has been widely used in resource detection with air-gun array [5], underwater explosion [2,[6][7][8], and biomedical fields [9]. With the rapid development of weapons and equipment technology, the damage caused by the underwater explosion of ships and marine structures has become more severe, which seriously restricts the vitality of vessels and marine systems.…”

Section: Introductionmentioning

confidence: 99%

The Nonlinear Coupling of Oscillating Bubble and Floating Body with Circular Hole

Minghe¹,

Liu²,

Ren³

et al. 2021

Computer Modeling in Engineering &Amp; Sciences

Self Cite

View full text Add to dashboard Cite

The fluid-structure interaction of the oscillating bubble and floating body with circular hole is essentially the nonlinear coupling problem among the incomplete movable boundary, free surface and bubble. This problem is particularly complicated in bubble dynamics. Combined with the volume of fluid method, the Eulerian finite element method is employed to deal with the fluid movement. Based on the improved penalty immersed boundary method, the transient axisymmetric numerical model is established in this paper, considering the fluid-structure interaction effect. The results of simulation are consistent with those of the electric discharge bubble experiment and explosion experiment. Subsequently, considering the influence of the hole size, floating body density, explosive location, and buoyancy, this complex fluid-structure interaction problem is analyzed systematically. Through numerical simulation, we get some new conclusions. When the radius of the hole R h less than the maximum radius of the oscillating bubble, the changes in the whole system are incredibly intense, and the free surface crushing will emerge. The energy of the bubble acts more on the radial direction of the floating body, when the explosive location parameter is small. When the floating body has the same density as the water, the multiple spike skirt is displayed vividly. And the buoyancy of fluid can produce a lifting effect on the floating body.

show abstract

Dynamic Response of Floating Body Subjected to Underwater Explosion Bubble and Generated Waves with 2D Numerical Model

Cited by 9 publications

References 24 publications

A numerical research on the interaction between underwater explosion bubble and deformable structure using CEL technique

A numerical research on the interaction between underwater explosion bubble and deformable structure using CEL technique

The jet characteristics of bubbles near mixed boundaries

The Nonlinear Coupling of Oscillating Bubble and Floating Body with Circular Hole

Contact Info

Product

Resources

About