中国物理B ›› 2015, Vol. 24 ›› Issue (6): 66401-066401.doi: 10.1088/1674-1056/24/6/066401

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Properties of sound attenuation around a two-dimensional underwater vehicle with a large cavitation number

叶鹏程, 潘光   

  1. School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
  • 收稿日期:2014-10-18 修回日期:2014-11-19 出版日期:2015-06-05 发布日期:2015-06-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51279165 and 51479170) and the National Defense Basic Scientific Research Program of China (Grant No. B2720133014).

Properties of sound attenuation around a two-dimensional underwater vehicle with a large cavitation number

Ye Peng-Cheng (叶鹏程), Pan Guang (潘光)   

  1. School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2014-10-18 Revised:2014-11-19 Online:2015-06-05 Published:2015-06-05
  • Contact: Ye Peng-Cheng, Pan Guang E-mail:ypc2008300718@163.com;panguang601@163.com
  • About author:64.70.fh; 47.55.D-; 43.25.+y; 43.20.+g
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51279165 and 51479170) and the National Defense Basic Scientific Research Program of China (Grant No. B2720133014).

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摘要： Due to the high speed of underwater vehicles, cavitation is generated inevitably along with the sound attenuation when the sound signal traverses through the cavity region around the underwater vehicle. The linear wave propagation is studied to obtain the influence of bubbly liquid on the acoustic wave propagation in the cavity region. The sound attenuation coefficient and the sound speed formula of the bubbly liquid are presented. Based on the sound attenuation coefficients with various vapor volume fractions, the attenuation of sound intensity is calculated under large cavitation number conditions. The result shows that the sound intensity attenuation is fairly small in a certain condition. Consequently, the intensity attenuation can be neglected in engineering.

关键词: large cavitation number, sound attenuation intensity, bubbly liquids, linear acoustic wave

Abstract: Due to the high speed of underwater vehicles, cavitation is generated inevitably along with the sound attenuation when the sound signal traverses through the cavity region around the underwater vehicle. The linear wave propagation is studied to obtain the influence of bubbly liquid on the acoustic wave propagation in the cavity region. The sound attenuation coefficient and the sound speed formula of the bubbly liquid are presented. Based on the sound attenuation coefficients with various vapor volume fractions, the attenuation of sound intensity is calculated under large cavitation number conditions. The result shows that the sound intensity attenuation is fairly small in a certain condition. Consequently, the intensity attenuation can be neglected in engineering.

Key words: large cavitation number, sound attenuation intensity, bubbly liquids, linear acoustic wave

中图分类号:  (Boiling and bubble dynamics)

  • 64.70.fh
47.55.D- (Drops and bubbles) 43.25.+y (Nonlinear acoustics) 43.20.+g (General linear acoustics)