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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) |
School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China |
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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.
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Received: 18 October 2014
Revised: 19 November 2014
Accepted manuscript online:
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PACS:
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64.70.fh
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(Boiling and bubble dynamics)
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47.55.D-
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(Drops and bubbles)
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43.25.+y
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(Nonlinear acoustics)
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43.20.+g
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(General linear acoustics)
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Fund: 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). |
Corresponding Authors:
Ye Peng-Cheng, Pan Guang
E-mail: ypc2008300718@163.com;panguang601@163.com
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About author: 64.70.fh; 47.55.D-; 43.25.+y; 43.20.+g |
Cite this article:
Ye Peng-Cheng (叶鹏程), Pan Guang (潘光) Properties of sound attenuation around a two-dimensional underwater vehicle with a large cavitation number 2015 Chin. Phys. B 24 066401
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