Multi-objective optimization of the Myring-style shape considering direct sailing resistance and flow-induced noise

This study addresses the shape optimization of underwater vehicles and proposes a design optimization scheme for the Myring-style shape by incorporating direct sailing resistance and flow-induced noise. Numerical simulation methods for the resistance and flow-induced noise are established, and their effectiveness is validated. Integrating CATIA and STAR-CCM+ within the modeFRONTIER platform enables the parametric design of the Myring-style shape,and the calculation of flow-induced noise was accomplished through the automated analysis based on resistance. Representative surrogate models are tested and compared; high-accuracy models for resistance and flow-induced noise are consequently identified. A multi-objective optimization model based on the Kriging framework is then constructed for the Myring-style shape. Using the nondominated sorting genetic algorithm II, multi-objective optimization is performed. Comparative results indicate that relative to the initial design, the Pareto front solutions are improved for some objectives, with certain solutions achieving enhancements across all objectives, thereby validating the effectiveness of the proposed optimization process.