The fluid-solid coupling mechanics research team from the College of Shipbuilding Engineering, in collaboration with the University of Magdeburg in Germany and the University of Science and Technology of China, has achieved a significant milestone with their research titled "Free-Surface Jetting Driven by a Cavitating Vortex Ring," which has been featured on the cover of the prestigious Journal of Fluid Mechanics. The team has developed a novel method for generating high-energy annular cavitation bubbles underwater. By directing these bubbles toward the free surface, they successfully created highly focused free-surface jets. This breakthrough not only enhances our understanding of bubble dynamics and the interaction between vortex rings and interfaces but also offers new insights into the long-distance, directional transport of energy and matter in liquid environments. The research holds considerable potential for applications in deep-sea resource exploration, fluid mixing, and bioprinting.
ZHANG Tianyuan, a doctoral student from the College of Shipbuilding Engineering, is the first author of the paper, while Associate Professor LI Shuai is the corresponding author. Other authors include Professor ZHANG Aman from Harbin Engineering University, Professor LIU Luoqin from the University of Science and Technology of China, and Professor Klaus-Dieter Ohl from the University of Magdeburg. Harbin Engineering University is listed as the primary affiliated institution.
The Fluid-Structure Interaction Mechanics Research Team, supported by national projects such as the National Key R&D Program and the National Natural Science Foundation of China, has conducted extensive research on bubble dynamics. In recent years, the team has published over a hundred papers in top-tier journals, including Journal of Fluid Mechanics, Journal of Computational Physics, and Physical Review: Fluids, with over 10,000 citations, significantly contributing to the global academic community.
The Journal of Fluid Mechanics, published by Cambridge University Press, is a core journal founded in 1956 by renowned fluid dynamicist George K. Batchelor. It is widely regarded as one of the leading journals in the field of fluid mechanics.
Paper link: [https://doi.org/10.1017/jfm.2024.1209](https://doi.org/10.1017/jfm.2024.1209)
