Research on bubble jet of underwater explosion at the bottom of fixed square plate

Qin, Jian; Wen, Yanbo; Meng, Xiangyao; Huang, Ruijie

doi:10.1360/sspma-2020-0379

Cited by 5 publications

(2 citation statements)

References 7 publications

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“…Due to the Bjerknes force exerted by the ice on the bubble, two oblique jets towards the ice block were generated at the location of the far end contraction, as shown by the red arrow in Figure 2 (d) (which is similar to the movement of the bubble near the wall). Subsequently, the two jets collide with each other (f), merging the bubbles into circular bubbles, and releasing shock waves from various positions of the circular bubbles [6][7][8][9][10]. The shock waves propagate to the lower surface of the ice block and produce reflections.…”

Section: Experimental Study On Ice Breaking Under Multi-bubble Fusionmentioning

confidence: 99%

Experimental Study on Multi Bubble Ice Breaking Under Layer Ice Boundary Conditions

Guo,

Yu,

et al. 2023

ACETR

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Under certain conditions of bubble spacing and bubble to ice distance, the motion state and ice breaking effect of horizontal and vertical bubbles under ice plate boundary conditions were studied. Bubbles are generated through underwater discharge, and the generating device is placed horizontally or vertically below the ice plate, and the experimental phenomenon is observed through an ultra-high-speed camera. Firstly, the motion characteristics and ice breaking ability of two horizontal bubbles under an unperforated ice block were demonstrated. Then, the motion characteristics of two horizontal bubbles and two vertical bubbles under a porous ice block, the breaking effect of the ice block, and the water mound phenomenon on the free surface were observed. The experiment observed unique bubble behavior, including bubble fusion, bubble collapse, and oblique jet, as well as the influence of bubble-bubble and bubble-ice interactions on the morphology evolution and ice breaking effect of bubbles. The results indicate that the ice breaking effect of the interaction between bubbles and perforated ice plates is weaker than that of non-perforated ice plates, which may be more helpful for subsequent bubble ice breaking research.

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Section: Experimental Study On Ice Breaking Under Multi-bubble Fusionmentioning

confidence: 99%

Experimental Study on Multi Bubble Ice Breaking Under Layer Ice Boundary Conditions

Guo,

Yu,

et al. 2023

ACETR

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“…To study the motion characteristics of bubbles under different boundary conditions, Domestic and foreign scholars widely use small equivalent TNT explosives, electric sparks, and laser bubble generation methods to conduct mechanistic research on bubble pulsation and study the interaction characteristics between bubbles and different boundaries. Qin Jian et al [5][6] designed underwater explosion experiments of small equivalent TNT explosives at the bottom of fixed supported square plates at different detonation distances. They analyzed and studied bubble pulsation and jet load through underwater pressure sensors and high-speed cameras.…”

Section: Introductionmentioning

confidence: 99%

The Pulsation Characteristics of Multiple Bubbles Under Ship Structural Boundary Conditions

Su,

Yu,

Guo

et al. 2023

ACETR

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To study the pulsation characteristics of multiple bubbles located near the wall structure, underwater low-pressure discharge bubble generation technology was used to study the coupling characteristics of multiple bubbles under horizontal and V-shaped wall conditions. Due to the Bjerknes force on the wall of the bubble, the motion state of the bubble will be affected. Exploring the pulsation characteristics of multiple bubbles under different working conditions and arrangements. The results indicate that the coupling characteristics between bubbles become completely different under boundary conditions. Analyzing the experimental results, it was found that the pulsation period of the bubbles was shortened, resulting in jet, shock wave, and jet loads on the structure, leading to wall damage and necking after fusion. Through different boundary conditions and innovative arrangements of multiple bubbles, the influence of underwater structures on the pulsation characteristics of multiple bubbles in underwater explosions was explored, providing theoretical support for the strength design of ship structures.

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近场水下爆炸对预制破口固支薄板的作用机理研究

Chen,

Qin,

Meng

et al. 2024

Acta Mech. Sin.

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Research on bubble jet of underwater explosion at the bottom of fixed square plate

Cited by 5 publications

References 7 publications

Experimental Study on Multi Bubble Ice Breaking Under Layer Ice Boundary Conditions

Experimental Study on Multi Bubble Ice Breaking Under Layer Ice Boundary Conditions

The Pulsation Characteristics of Multiple Bubbles Under Ship Structural Boundary Conditions

近场水下爆炸对预制破口固支薄板的作用机理研究

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