水下航行器艇体形状对阻力及流噪声综合影响

Comprehensive influence of underwater vehicle hull shape on resistance and flow noise

艇体形状同时影响水下航行器的快速性和隐身性两大重要性能。为了探究艇体形状对阻力以及流噪声的综合影响规律,本文应用Myring方程确定了不同头部形状、艉部形状,以及平行中体长度的艇型,基于CFD方法应用Realizable k-ε湍流模型对不同艇型的阻力进行计算,并应用大涡模拟湍流模型结合FW-H方程对不同艇型的流噪声进行了计算。结果显示在流速、艇体长度、长宽比等条件相同时,头部形状中等饱满,艉部外凸,平行中体长度小的艇体阻力以及流噪声小。计算结果可对水下航行器的形状设计提供一定参考。

The hull shape affects the rapidity and stealth performance of underwater vehicles.To explore the comprehensive influence law of the hull shape on resistance and flow noise,in this study,the Myring equation is used to determine the hull shapes with different head shapes,tail shapes,and parallel middle-body lengths.Based on the computational fluid dynamics method,the resistance of different hull shapes is calculated using the realizable turbulence model,and the flow noise of different hull shapes is calculated using the large eddy simulation turbulence model combined with the Ffowcs Williams-Hawkings equation.The results show that when the flow velocity,hull length,aspect ratio,and other conditions are the same,the hull with a medium plump head,protruding tail,and short parallel middle-body length has small resistance and flow noise.The results can provide a reference for the shape design of underwater vehicles.