内波环境下水下滑翔机流场与载荷特性分析

This paper utilizes the k-Epsilon turbulence model and a custom field function to develop a computational fluid dynamics model for analyzing the flow field and load characteristics of an underwater glider in density-stratified fluids to ensure the operation safety of underwater gliders. Results show that the influence of internal waves cannot be ignored during underwater glider operation. The flow velocity of the glider flow field and the vortex will both increase when the glider passes through the internal solitary waves. The change trend of the lift and pitching moment of the glider will increase when the glider is close to the interface, and the resistance will gradually rise when it is far away from the interface. The amplitude of the received resistance decreases, that of the lift slightly changes, and that of the pitch moment increases when the pitch angle of the glider rises. This paper reveals the flow field and load characteristics of the underwater glider in the internal wave environment, which has important theoretical and engineering significance for the design of classical underwater gliders and the hydrodynamic response prediction of the internal solitary wave encountered during operation.