Underwater bubble is becoming increasingly significant for the related devices because of its high heat transfer efficiency and acoustic signals, especially under ocean conditions. This work proposes a numerical simulation method to investigate the effects of rolling conditions on the bubble detachment surface area and acoustic characteristics. First, the spatial distribution of bubble oscillation amplitude under rolling conditions was investigated. An acoustic pressure peak occurs during the bubble detaches from the nozzle and the acoustic source appears above the main bubble. The amplitude of acoustic pressure attenuates from the acoustic source to all around. Besides, the effects of rolling conditions on the bubble detachment surface area and oscillation amplitude were analyzed. Under different rolling conditions, the oscillation amplitude and the detachment surface area of the bubble periodically change in the same trend, and the period is half of the rolling period. Finally, a correlation was put forward for fitting the amplitude of bubble oscillation frequency under rolling conditions, with most deviations less than ±13.2%.

水下气泡因其高传热效率和声学信号，特别是在海洋条件下，对相关设备来说变得越来越重要。这项工作提出了一种数值模拟方法来研究滚动条件对气泡脱离表面积和声学特性的影响。首先，研究了滚动条件下气泡振荡幅度的空间分布。在气泡从喷嘴分离并且声源出现在主气泡上方时会出现声压峰值。声压的幅度从声源向四周衰减。此外，还分析了滚动条件对气泡脱离表面积和振荡幅度的影响。在不同的轧制条件下，气泡的振荡幅度和脱离表面积呈同一趋势周期性变化，周期为滚动周期的一半。最后，提出了拟合滚动条件下气泡振荡频率幅度的相关性，大多数偏差小于±13.2%。