| 基于近场声全息的声强场可视化方法 |
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| 引用本文： | 周琳娜,楼京俊,朱石坚. 基于近场声全息的声强场可视化方法[J]. 噪声与振动控制, 2013, 33(6): 53-56 |
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| 作者姓名： | 周琳娜 楼京俊 朱石坚 |
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| 作者单位： | （ 海军工程大学 船舶与动力学院, 武汉 430033 ） |
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| 基金项目： | 国家自然科学基金（基金编号：51009143） |
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| 摘 要： | 传统噪声源识别主要基于频谱分析方法，无法准确反映声源位置和声场强度变化信息。针对大型水下结构体辐射声场的噪声源识别和辐射声能量监测的问题，提出一种基于声全息测量技术的辐射声强场可视化方法，计算声波在均匀介质中的声强矢量场，并采用体绘制和流线技术实现声场量的可视化，从而定位结构体主要辐射噪声源，直观地展示辐射声场的能量分布及耗散情况，描述声场能量传递方向与路径，为水下结构体辐射声场的监测与分析提供一种新的手段。
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| 关 键 词： | 声学 近场声全息(NAH) 水下结构体 辐射声强 科学计算可视化 |
| 收稿时间： | 2013-03-06 |
Visualization of Sound Intensity Field Based on NAH |
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| ZHOU Lin-na,LOU Jing-jun,ZHU Shi-jian. Visualization of Sound Intensity Field Based on NAH[J]. Noise and Vibration Control, 2013, 33(6): 53-56 |
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| Authors: | ZHOU Lin-na LOU Jing-jun ZHU Shi-jian |
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| Affiliation: | ( Ship and Power Engineering Institute, Naval University of Engineering, Wuhan 430033, China ) |
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| Abstract: | A method of visualizing the sound intensity field based on NAH was designed for the noise sources identification of the underwater-structure. Firstly, the sound intensity vector field of the medium was figured out. Then, visualization of this vector field was completed by volume rendering and streamline technique. With this visualization method, the location of the noise sources can be identified and also the sound energy distribution and dissipation can be displayed by volume rendering of the absolute values of the sound intensity. The direction of energy propagation can be described by the streamline. This paper offers a new way of monitoring and analyzing the radiation acoustic field of underwater structures. |
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| Keywords: | acoustics near field acoustical holography（NAH） underwater structure sound intensity visualization inscientific computing |
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