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基于耦合边界元法的水下目标低频声散射特性 预览 被引量:4

The low-frequency acoustic scattering characteristics study on underwater targets by the coupled boundary element method
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摘要 基于耦合声学边界元理论对水下目标低频声散射特性进行仿真研究。为了验证此数值方法准确性,对水中弹性球壳在平面波入射下的反向散射特性进行数值计算。结果表明,散射声场的数值计算结果和解析解较好吻合。在此基础上,本文探究刚性BeTSSi-Sub[1]和弹性BeTSSi-Sub的全向散射特性,对比发现,刚性BeTSSi-Sub的目标强度大于弹性BeTSSi-Sub的目标强度。通过对形状不同弹性的BeTSSi-Sub的目标强度对比发现,在低频段潜艇上舵对潜艇目标强度的影响比上层建筑的影响大。 Based on the coupled boundary element techniques,this paper simulated the lowfrequency acoustic scattering characteristics of the underwater targets. In order to validate this numerical method,the backscattering of the elastic shell in water was calculated when the incident wave encountered it. Comparison of the numerical results with the corresponding analytical solutions shows that they are in good agreement. On this basis,this paper simulated the omni-directional scattering of the rigid BeTSSi-Sub and the elastic BeTSSi-Sub. The results showed the rigid BeTSSi-Sub' s target strength is greater than the elastic BeTSSi-Sub' s. Comparing the target strength of the elastic BeTSSi-Sub with different shapes,the results showed that the helm's impact to the submarine target strength is greater than the superstructure's.
作者 魏克难 李威 雷明 柴应彬 WEI Ke-nan,LI Wei,LEI Ming,CHAI Ying-bin (Huazhong University of Science and Technology, Wuhan 430074, China)
机构地区 华中科技大学
出处 《舰船科学技术》 北大核心 2014年第10期32-36,共5页 Ship Science and Technology
关键词 耦合边界元 声散射 BeTSSi-Sub 目标强度 弹性 the boundary element the acoustic scattering BeTSSi-Sub the target strength elastic
作者简介 魏克难(1989-),男,硕士研究生,研究方向为水下目标声散射特性研究、结构静动态试验、振动与噪声测试。
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参考文献9

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二级参考文献11

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