| 气泵法生成气泡帷幕的特性研究 |
| Study on the Characteristics of Bubble Curtain Generated by Air Pump Method |
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| DOI： |
| 中文关键词: 气泡帷幕 声衰减 反演 共振谱法 |
| 英文关键词:Bubble curtain Sound attenuation Inversion Resonance spectrum method |
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| 中文摘要: |
| 气泡帷幕在水下噪声抑制方面有非常广泛的应用。为了更好地利用气泡帷幕的衰减特性，在实验室水槽设备中采用气泵法产生气泡帷幕，通过对不同深度、气流量接收信号的时频分析，利用共振谱法对气泡分布进行反演。研究表明：1、气泡的分布可以利用高斯分布近似描述。2、随着深度增加，气泡含量也有略微增加。3、气泵法产生的气泡帷幕的气流量大小对衰减的峰值所在的频段基本没有影响，但气流量的改变会影响声波衰减的强弱，气流量大的情况下，气泡帷幕对声波衰减效果更强。通过掌握气泵法生成气泡帷幕中气泡的分布规律，可以有效指导气泡帷幕的设计。 |
| 英文摘要: |
| Bubble curtain has a wide range of applications for underwater noise suppression. In order to make better use of the attenuation characteristics of the bubble curtain, the bubble curtain was generated by the air-pump method in the laboratory flume and analyzed. By analyzing the time-frequency receiving the signal in different depth and gas flow rate, the bubble distribution was inverted using the resonance spectrum method. The research showed that: 1.The distribution of bubbles could be described approximately by Gaussian distribution. 2. As the depth gets deeper, the bubble content increases slightly. 3. The gas-flow rate of bubble curtain generated by air pump method has little effect on the frequency band of the attenuation peak, but the change of gas-flow rate will affect the attenuation of sound wave. When the gas-flow rate is larger, the attenuation effect of bubble curtain is stronger. By mastering the bubble distribution law of the bubble curtain generated by the air-pump method, the design of the bubble curtain could be guided effectively. |
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