[论文解读] The Impact of Turbulence on Hydroacoustic Waves

Kai-Xin Hu, Yue-Jin Hu|arXiv (Cornell University)|Feb 9, 2026

Underwater Acoustics Research被引用 0

一句话总结

论文研究湍流如何影响水声声波，显示湍流既改变振幅也改变相位，放大与相位移随频率呈周期性变化，并在管道流动中湍流衰减后识别出六种波演化类型。

ABSTRACT

Building upon our first paper [Hu, K.X, & Hu, Y. J. (2025). Hydroacoustic Absorption and Amplification by Turbulence, arXiv:2512.07920], the present work conducts a more in-depth investigation into the impact of turbulence on hydroacoustic waves. The study includes the influences of temperature, unsteady laminar flow, standing wave effects, the alteration of phase, the variation of amplification factor with frequency, and the temporal evolution of the acoustic wave. Experiments indicate that the temperature rise caused by friction between the turbulent flow and the pipe wall does not significantly affect the acoustic wave, and therefore is not the primary cause of changes in wave amplitude. When two transducers are placed opposite each other, the acoustic waves can be regarded as a superposition of traveling waves and standing waves. When the pump is shut down after the pipe flow has stabilized, the temporal evolution of the acoustic waves during the subsequent turbulence decay process can be classified into six types. In addition to altering the amplitude, turbulence also changes the phase of waves. The total phase shift of the acoustic wave along the entire pipe equals the sum of the phase shifts in each segment. Both the amplification factor and the phase shift due to turbulence vary periodically with frequency. Acoustic waves with frequencies below and above specific thresholds are essentially unaffected by turbulence. These findings suggest that the interaction between hydroacoustic waves and turbulence constitutes stimulated absorption and emission in water.

研究动机与目标

• 理解湍流波动如何影响水声波的振幅与相位，超出传统散射模型的解释。
• 量化湍流引起的放大因子和相位移。
• 表征阀门关闭后湍流衰减阶段声波的时间演化。
• 区分湍流效应与层流波动及涡旋引起的变化。

提出的方法

• 在湍流管道流动中实测水声波的振幅与相位。
• 分析放大因子和相位移随频率的函数关系。
• 跟踪阀门关闭后湍流衰减阶段波的时间演化。
• 将湍流情况与层流波动进行对比，以确立本质差异。

实验结果

研究问题

• RQ1 湍流如何超出散射/共振解释来改变水声波的振幅和相位？
• RQ2 湍流引起的放大因子和相位移如何，且它们随频率如何变化？
• RQ3 阀门关闭后湍流衰减阶段声波的时间演化及分类为何？
• RQ4 哪些频段基本不受湍流影响，原因何在？
• RQ5 涡旋与非稳层流与湍流在对水声信号影响上有何不同？

主要发现

• 湍流同时改变声波的振幅和相位。
• 整根管道的总相位位移等于各段相位位移之和。
• 湍流引起的放大因子与相位移随频率呈周期性变化。
• 阀门关闭后，湍流衰减过程产生六种声波时间演化类型。
• 某些频率的声波在本质上不受湍流影响。
• 层流状态的涡旋和非稳态流动并不改变振幅或相位，与湍流形成显著差异。