水下航行体不规则波中波浪力计算方法研究

Research on Wave Load Calculation Method for Underwater Vehicles in Irregular Waves

摘要:

针对水下航行体不规则波中波浪力计算的问题，基于三维边界元方法，考虑有限水深的影响， 开展了不同航速、航行深度和海况等级下的波浪力特性研究。首先，建立了适用于水下航行体波浪力计算的三维边界元模型。然后，采用数值积分方法解算速度势，并通过脉冲响应函数方法获得不规则波中航行体的波浪力和力矩时历数据。随后，通过模型试验结果验证了该方法的有效性。最后，对不同工况下的波浪力时历数据进行了统计分析。研究结果表明：增加航行深度可以显著降低波浪力，而恶劣的海况条件会显著增加波浪力。提出的基于三维边界元法的波浪力数值计算方法能够有效预测水下航行体在不同工况下的波浪力特性，为优化水下航行体的设计与控制提供了重要的理论支持和实际应用价值。

Abstract:

This paper focuses on the issue of wave load calculation for underwater vehicles in irregular waves. Based on three-dimensional boundary element method，and considering the influence of finite water depth，the wave load characteristics under different speed，depth，and sea state conditions are studied. Firstly，a three-dimensional boundary element model for underwater vehicle wave load calculation is established. Then，the velocity potential is calculated by numerical integration method，and the time history data of wave loads and moments acting on the vehicle in irregular waves are obtained by impulse response function approach. Furthermore，the effectiveness of this method is verified by model test results. Finally，the time history data of wave loads under various operating conditions are analyzed. The results indicate that increasing the navigation depth can significantly reduce the wave loads，while adverse sea states can lead to a significant increase in wave loads. The three-dimensional boundary element method based numerical calculation method proposed in this paper can effectively predict the wave load characteristics of underwater vehicles under different conditions. The results provides important theoretical support and practical application value for optimizing the design and control of underwater vehicles.