水下强声源的多电极阵列聚束特性

刘小龙; 张群飞; 雷开卓

doi:10.11858/gywlxb.2017.02.010

水下强声源的多电极阵列聚束特性

doi: 10.11858/gywlxb.2017.02.010

1.
空军工程大学防空反导学院，陕西西安 710051
2.
西北工业大学航海学院，水下强声实验室，陕西西安 710072

基金项目:

国家自然科学基金 61531015

西北工业大学科技创新基金 W018105

详细信息

作者简介:
刘小龙(1984—), 男, 讲师, 主要从事水下高压脉冲放电、声场分析研究. E-mail: wusiguangchang2005@126.com

中图分类号: O427; TB561
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出版历程
- 收稿日期: 2015-12-12
- 修回日期: 2016-02-27

Multi-Electrode Array Bunching Characteristics of Underwater Intense Sound Source

1.
Air and Missile Defense College, Air Force Engineering University, Xi'an 710051, China
2.
Laboratory for Underwater Intense Acoustic, School of Marine Engineering, Northwestern Polytechnical University, Xi'an 710072, China

摘要

摘要: 分析了水下等离子体强声源的冲击波产生特性，利用激波产生时刻与触发开关导通时刻之间时间间隔的一致性，提出了基于激波叠加的多电极阵列聚束的可行方案。建立了水下等离子体强声源的多电极阵列聚束模型，通过仿真计算，得到了不同放电时序下的多电极阵列聚束声场分布特性。仿真结果表明：基于激波的多电极阵列聚束方案可有效进行相干叠加，通过控制多电极阵列的阵元放电时序可灵活改变阵列聚束区域的指向性，有效提高指定区域的聚束波声压级。研究结果对认识水下强声冲击波的叠加规律和优化水下强声源的多电极阵列设计具有指导意义。
- 等离子体强声源 /
- 多电极 /
- 阵列聚束 /
- 声场
Abstract: The shock wave generation characteristics of underwater plasma intense sound source were analyzed and, based on the superposition of shock waves, a multi-electrode array bunching scheme was proposed using the interval consistency between the shock wave formation and the triggered switch flow.The multi-electrode array bunching sound field model of underwater plasma intense sound source was established, and the array bunching characteristics of different discharging sequences were obtained by numerical simulation.The results show that the multi-electrode array bunching scheme is feasible for coherent superposition.By controlling the discharging sequence of the multi-electrode array, the directivity of the array bunching area can be flexibly changed and the sound pressure level of the specified area can be effectively enhanced.The results provide a theoretical guide for further understanding of the superposition rule of underwater intense sound shock wave and optimum design of the multi-electrode array.
- plasma intense sound source /
- multi-electrode /
- array bunching /
- sound field

HTML全文

图 1 典型的水下等离子体强声源的声脉冲信号与电压波形

Figure 1. Typical sound pulse and voltage waveforms of underwater plasma intense sound source

下载: 全尺寸图片幻灯片

图 2 水下强声源的多电极阵列聚束原理示意图

(1.高压充电系统; 2.储能系统; 3.控制系统; 4.可编程逻辑器件; 5.多通道触发系统)

Figure 2. Multi-electrode array bunching principle diagram of underwater intense sound source

(1.High-voltage charging system; 2.Energy storage system; 3.Control system; 4.Complex programmable logic device; 5.Multi-channel triggering system)

下载: 全尺寸图片幻灯片

图 3 多电极阵列聚束的声场分布云图

Figure 3. Sound field distribution chart of multi-electrode array bunching

下载: 全尺寸图片幻灯片

图 4 多电极阵列聚束偏转的声场分布云图

Figure 4. Sound field distribution chart of multi-electrode array bunching deflection area

下载: 全尺寸图片幻灯片

图 5 多电极阵列聚束的声场变化

Figure 5. Bunching sound field change of multi-electrode array

下载: 全尺寸图片幻灯片

表 1 重复试验条件下的冲击波分析

Table 1. Shock wave analysis based on repeated measure condition

Discharge sequence	Sound pressure level of shock wave/(dB)	(t_B-t_A)/(μs)	Sound pressure level of bubble wave/(dB)	(t_C-t_A)/(μs)
1	242.2	192	244.1	7 888
2	241.3	192	242.7	7 528
3	241.8	193	240.2	7 807
4	241.6	192	241.6	7 633
5	241.2	192	243.0	7 522

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