Experiment of Underwater Acoustic Produced by Single Drop Impacts

摘要：

　　An experimental study of the underwater sound produced by single drop impacts influenced by different wind speeds, free fall heights and drop sizes at different depths is described in this article.Three kinds of acoustic radiation named impact sound, irregular bubble sound and delay bubble sound are distinguished by the pressure time trace.The images of bubbles taken near the point where the drop falls into water are shown.Some statistics laws of initial impact sound and irregular bubble sound affected by different condition included wind levels, heights of free fall and drop sizes are concluded.The directionality of initial impact sound is measured with wind and no wind.The process of delay bubble entrainment is analyzed and the measurements of bubble excitation probability in different condition are listed.

关键词： Initial impact sound Irregular bubble sound Delay bubble sound Bubble excitation probability

作者: Zhao Ran Meng Wei Qiang Zhang Hui Sun

作者单位: National Laboratory of Underwater Acoustic Technology,Harbin Engineering University,China National Laboratory of Underwater Acoustic Technology,Harbin Engineering University,China;Ocean Hydr

会议类型: 国际会议

会议名称: the 2012 International Conference on Vibration, Structural Engineering and Measurement (2012年振动、结构工程与测量国际会议(ICVSEM2012))

会议地点: 上海

会议语种:英文

页码: 2137-2142

在线出版日期: 2012-10-19（万方平台首次上网日期，不代表论文的发表时间）