The influence of different working conditions in waves on the buoyancy motion of SUBOFF

When a submarine surfaces in waves, it encounters wave disturbances that can induce swaying motions. To address this, it is crucial to study the buoyancy behaviour of submarines in wave environments. A numerical wave tank was constructed using fifth-order wave theory and the Reynolds-Averaged Navier-Stokes (RANS) method. Numerical simulations were performed under various working conditions and compared with experimental results. The findings revealed a strong agreement between the numerical simulations and experimental data, confirming the accuracy and feasibility of the numerical approach. Additionally, the study examined the effects of different wave orientations, wave heights, and wavelengths on submarine buoyancy, analysing the patterns and behaviours of buoyancy in wave conditions. The numerical approach, experimental validation, and resulting conclusions offer valuable technical support for research on submarine buoyancy in regular waves.