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一项对电动和传统船只水下辐射噪声的比较研究
Tom A Smith1, Charlotte R Findlay2, Andrea Grech La Rosa1
1Department of Mechanical Engineering, University College London, Gower Street, London, WC1E 6BT, United Kingdom.
The Journal of the Acoustical Society of America
|March 13, 2026
概括
电动船舶推进更安静,电动船显示的水下辐射噪声 (URN) 比传统船只要低得多. 这种噪声降低在较低的速度是最明显的,即使发生化.
科学领域:
- 海洋工程 海洋工程
- 声学 声学 在声学上.
- 可持续的推进 可持续的推进
背景情况:
- 电动推进系统越来越多地用于船舶,特别是小型船只.
- 电力推进的水下辐射噪声 (URN) 通常被认为低于内燃机,但数据有限.
- 现有的关于电力船舶推进的URN研究提供了一个复杂而多样化的图片.
研究的目的:
- 为了比较两艘相同的船只的水下辐射噪声 (URN) 特性,一艘采用常规燃烧船外动力,另一艘采用电动船外动力.
- 量化电动推进在一系列船舶速度的降噪效益.
- 对于两种推进类型来说,研究空心对URN的影响.
主要方法:
- 电动和常规内燃机外板发动机船之间的URN水平的比较分析.
- 测试在4-20节的速度范围内进行.
- 宽带源级别的测量和比较以及化效应的评估.
主要成果:
- 电动船在所有测试速度 (4-20节) 上显示出较低的宽带源水平.
- 在4节时,电动船的宽带源水平比传统船低43dB.
- 电动容器保持较低的URN,即使在高速度出现化,其高频电机噪声也低于其他研究报告的水平.
结论:
- 与海上船舶的传统内燃机相比,电动船外推进系统可显著降低水下辐射噪声.
- 电动推进的噪声优势在较低的速度上是相当大的,即使在较高的速度和化时也会持续下去.
- 电动推进系统的特定设计会影响URN,这表明并非所有电动系统都能提供统一的降噪效益.
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