Professor ZHANG Aman’s team has achieved a significant breakthrough in bubble theory, developing a Bubble Dynamics Equation that incorporates multiple critical factors, including bubble oscillation, migration, environmental coupling, and phase transition. This new equation builds on their previously established unified bubble model, now enhanced with a phase transition coupling effect. Reviewers from the Journal of Fluid Mechanics described it as "very robust and easy to apply."
This advanced model offers improved accuracy and broader applicability, shedding light on the mechanisms governing bubble dynamics under various conditions. It elucidates how compressibility, oscillation, migration, and phase transition influence bubbles, providing a theoretical framework for research in deep-sea exploration and cavitation phenomena. The research, titled "A Theoretical Model for Compressive Bubble Dynamics Considering Phase Transition and Migration," was published on November 14 in the prestigious Journal of Fluid Mechanics.
Figure 1. Bubble Phase Transition Process
Understanding the effects of phase transition is one of the most complex aspects of bubble dynamics. Critical factors like fluid compressibility, phase changes, and bubble migration interact simultaneously, posing challenges for accurate modeling. Existing theoretical models often fail to fully describe this intricate process.
Figure 2. Dynamic Behavior of Near-Boundary Cavitation Bubbles
Building on their foundational work, Professor ZHANG Aman’s team derived a new equation that accounts for the coupling effects of phase transition sources. This model integrates bubble oscillation, migration, environmental coupling, and phase transition within a unified mathematical framework. The equation’s flexible design enables it to adapt to classical bubble equations, such as those by Keller-Miksis, Gilmore, and Rayleigh-Plesset, ensuring both versatility and clarity in its physical interpretation.
Figure 3. Bubble Dynamics Equation Incorporating Multiple Physical Factors
Figure 4. Principle of Deep-Sea Exploration Using High-Pressure Air Gun Arrays
Figure 5. Low-Frequency, High-Capacity Air Gun Seismic Source Equipment
The Journal of Fluid Mechanics, a leading publication under Cambridge University Press, was established in 1956 by renowned fluid dynamics expert George K. Batchelor. It is widely regarded as one of the most authoritative journals in the field of fluid mechanics.
link: https://doi.org/10.1017/jfm.2024.954
