The Pulsation Characteristics of Multiple Bubbles Under Ship Structural Boundary Conditions

Abstract

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.