Characterization of the Dynamic Behavior of Multinanobubble System under Shock Wave Influence

Area of Science:

• Physics
• Materials Science
• Fluid Dynamics

Background:

• Nanobubbles are crucial in cavitation erosion and biocarrier transport.
• Existing research primarily examines single nanobubbles, neglecting real-world multibubble systems.
• Understanding multibubble dynamics is essential for various scientific and engineering applications.

Purpose of the Study:

• To develop a novel method for constructing multibubble models.
• To investigate the dynamic behavior of multibubble systems under shock wave influence.
• To explore the interaction range and influence between nanobubbles in a system.

Main Methods:

• A cutting and replicating method was used to create multibubble models.
• Molecular dynamics (MD) simulations were employed to study nanobubble behavior.
• Simulations were performed on a liquid argon system subjected to shock waves.

Main Results:

• Bubble arrangement and shock wave angle significantly affect inter-bubble influence and collapse times.
• For two nanobubbles, closer alignment with the shock wave increases interaction.
• Shock wave velocity impacts collapse time and contraction rate, with high-radian waves showing less effect on subsequent bubbles.

Conclusions:

• The proposed multibubble modeling method enhances molecular dynamics (MD) model customization.
• Nanobubble interactions are complex and depend heavily on their spatial arrangement and shock wave characteristics.
• This research provides insights into shock wave phenomena in multibubble systems, relevant for cavitation and transport processes.