| 粗糙海面对空气中声源激发水下声场的影响 |
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| 引用本文： | 张灵珊,;彭朝晖.粗糙海面对空气中声源激发水下声场的影响[J].中国科学:物理学 力学 天文学,2014(9):896-906. |
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| 作者姓名： | 张灵珊 ;彭朝晖 |
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| 作者单位： | [1]}中国科学院声学研究所声场声信息国家重点实验室,北京100190; [2]中国科学院大学,北京100190 |
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| 基金项目： | 海洋公益性行为科研专项经费资助项目（编号：201405032） |
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| 摘 要： | 提出一种计算粗糙海面条件下空气中声源激发水下声场的方法,并通过数值仿真研究粗糙海面对水下声场的影响.在波数积分模型的基础上,采用微扰法将声场分为平均声场和散射声场之和.其中,平均声场采用国际流行的波数积分模型OAST计算,散射声场采用自相容扰动法计算.对不同风速、不同声源频率条件下的声场进行仿真,结果表明风速越大、声源频率越高,总声压变化范围越大,同时,水下接收到的平均声压和均方声压受到的影响越大.
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| 关 键 词： | 空气声波透射入水 自相容扰动法 粗糙海面 |
Effects of rough interface on air-to-water sound transmission |
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| Institution: | ZHANG LingShan PENG ZhaoHui ( 1 State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China 2 University of Chinese Academy of Science, Beijing 100190, China) |
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| Abstract: | A method is putted forward to calculate the air-to-water sound transmission and analyze the effects of rough interface on air-to-water sound transmission. The method is based on wave-number integration modal and perturbation method, and the field is decomposed into mean field and scattered field. The international epidemic OAST is used to calculate the mean field and the self-consistent perturbation approach is used to calculate the scattered field. Calculating the total field by this method when the wind speed is different and the results show that when the wind speed is greater, the variation of the total field is larger and the greater wind speed shows positive influence to the mean field and the mean square field. So does the source＇s frequency. |
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| Keywords: | air-to-water sound transmission self-consistent perturbation approach rough interface |
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