Get started
Work

Research on the cavity flow and motion characteristics of vehicle launched underwater in waves

Year: 2025
Type: article
Abstract: The underwater vertical launch of a vehicle involves a complex gas-liquid mixing process. Upon breaching the water surface, the large-scale collapse and shedding of attached cavitation bubbles generate high-frequency transient impact loads on the vehicle's surface, significantly affecting its load distribution and motion trajectory. In extreme sea conditions characterized by wave environments, the intense disturbance of wave surface particles complicates the evolution and development of the cavitation bubbles during water exit. This paper presents numerical simulations of vehicle water exit in a wave environment, elucidating the effects of wave phase on the evolution of the multiphase flow field and vehicle motion characteristics. The results indicate that cavitation bubbles exhibit significant asymmetric evolution characteristics during water exit at the wave crest and trough. At the crest phase, the bubble size on the leeward side is much larger than on the windward side, whereas the opposite is true at the trough phase. Concurrently, the vehicle is subjected to a pair of lateral loads with narrow pulse widths, significant value differences, and a noticeable time lag. The load on the side with larger cavitation bubbles is several times greater than on the other side. When exiting at crest and trough phases, the vehicle's trajectory and deflection angle curves show significant deviations, with opposite deflection directions for the two phases. In contrast, the motion characteristics at the pre-crest and post-crest phases are closer to those in calm water, with minimal deflection.
DOI: 10.1016/j.apor.2025.104874
Language: English
Open Access status: gold
Estimated APC paid: $2,950
OpenAlex ID: W4416733265
FWCI: 0.799
Cites: 36
Cited by: 2
Related to: