When constructing a low-noise submarine, it is crucial to consider the non-cavitating noise from the propeller. Non-cavitating noise reduction is crucial for submarine stealth and survivability. Recently, several studies have been conducted on the use of flexible propellers as a means of reducing non-cavitating noise. However, there are no studies on the use of flexible propellers with adaptive characteristics to reduce noise in wake fields. Thus, this study investigated the noise reduction effect of adaptive characteristics on non-cavitating noise for the flexible propeller in the wake field. Numerical investigations on the main propeller variables were conducted based on the proposed procedure using fluid-structure interaction and acoustic analysis models. The results were compared with those of rigid propellers to determine the possible reasons for noise reduction. Finally, the acoustic analysis results of the flexible propeller were compared with those of the rigid propeller to reveal the effectiveness of the adaptive characteristics.

在建造低噪声潜艇时，考虑螺旋桨的非空泡噪声至关重要。非空泡降噪对于潜艇的隐身性和生存能力至关重要。最近，已经进行了几项关于使用柔性螺旋桨作为减少非空化噪声的手段的研究。然而，目前还没有关于使用具有自适应特性的柔性螺旋桨来降低尾流场噪声的研究。因此，本研究研究了柔性螺旋桨尾流场中自适应特性对非空泡噪声的降噪效果。根据所提出的程序，使用流固耦合和声学分析模型对主要螺旋桨变量进行了数值研究。将结果与刚性螺旋桨的结果进行比较，以确定降噪的可能原因。最后，将柔性螺旋桨的声学分析结果与刚性螺旋桨的声学分析结果进行比较，以揭示自适应特性的有效性。