Numerical Investigation of an Internal Solitary Wave Interaction with Elliptical Submersibles
摘要
This study examines the interaction between internal solitary waves (ISWs) and an elliptical submersible based on the eKdV theory. The numerical model’s accuracy is validated through comparison of force calculations on a single cylinder with experimental data. Analysis reveals significant hydrodynamic characteristics around the elliptical submersible. The findings demonstrate that vertical positioning and elevation angle substantially influence wave loads on the submersible. At various vertical positions, uniform distribution of elevated hydrodynamic pressure may result in submersible disintegration. Submersibles with ±30° elevation angles experience greater total moments, increasing their susceptibility to capsizing. The maximum horizontal force increases by factors ranging from 1.46 to 8.81 when the submersible is inclined between −30° and 30°. The interface exhibits negative vorticity accumulation due to shear effects between upper and lower fluids. Submersible inclination leads to increased surrounding velocity and vorticity.