噪声与振动控制

›› 2012, Vol. 32 ›› Issue (3): 104-107.DOI: 10.3969/j.issn.1006-1355.2012.03.024

• 2.振动理论与数值解法 • 上一篇    下一篇

刚性壁面附近多空化泡辐射噪声的研究

张鹏利1, 林书玉2, 张海娟3, 张 涛1   

  1. （ 1. 西安科技大学 理学院, 西安 710054； 2. 陕西师范大学 应用声学所， 西安 710062；3. 南阳北方红宇机电有限公司， 河南 南阳 474675 ）
  • 收稿日期:2011-04-20 修回日期:2011-07-17 出版日期:2012-06-18 发布日期:2012-06-18
  • 通讯作者: 张鹏利

Study on Radiation Acoustic Field due to Cavitation Bubble near Rigid Wall

ZHANG Peng-li1,LIN Shu-yu2,ZHANG Hai-juan3, ZHANG Tao1   

  1. ( 1. Xi’an University of Science and Technology, Xi’an 710054, China; 2. Institute of Applied Acoustics, Shanxi Normal University, Xi’an 710062, China;3. North Hongyu Electrical and Mechanical Corporation, Nanyang 474675, Henan China )
  • Received:2011-04-20 Revised:2011-07-17 Online:2012-06-18 Published:2012-06-18
  • Contact: ZHANG Peng-li

摘要： 对空化泡在刚性壁面附近溃灭过程中的辐射声场进行研究，并得出刚性壁面附近单空泡、双空泡的辐射声压分布。研究表明由于刚性壁面的影响使得空化泡的辐射声场表现出一定的指向性。双空泡辐射声压分布还与空泡崩溃时间、空泡之间距离以及空化泡初始半径有关。在考虑到声压相位叠加时，待测点处的辐射声压依赖于空泡的声压幅值[p]和两空泡到观察点的声程差[Δ1=l12sinθ1]和[Δ2=l22sinθ2]。计算过程及结果为刚性壁面附近的空化计算提供依据，并为多泡空化的辐射声场分析提供理论依据，有助于修正空化泡的运动方程。

关键词: 声学, 空化, 空化泡, 辐射声压, 声程差, 指向性

Abstract: The radiation acoustic field due to cavitation bubbles collapse near the rigid wall was studied. And the sound pressure distribution of the radiation field due to a single bubble and double bubbles near the rigid wall was obtained. This study shows that due to the impact of rigid wall the acoustic radiation of cavitation bubbles becomes some directional. The distribution of radiation pressure by double bubbles depends on the bubbles’ collapse time, the distance between bubbles, and the initial radius of the cavitation bubbles. Considering the phase superposition of sound pressures, radiation pressure at the measurement points depends on sound pressure amplitude p of the bubbles, and the sound path difference of the two bubbles to the observation point, [Δ1=l12sinθ1] and [Δ2=l22sinθ2]. This computation process and result may provide some basis for the cavitation calculation near the rigid wall, and a theoretical basis for radiation sound field analysis of multi-bubble cavitation. It is also helpful for improvement of kinematic equations of cavitation bubbles.

Key words: acoustics, cavitation, cavitation bubble, radiation pressure, difference of sound path, directivity pattern

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