多分散颗粒悬浊液声传播衰减模型研究

Study on sound propagation attenuation model in suspensions of polydisperse particles

利用Bouguer-Lambert-Beer-Law理论,推导出了多分散颗粒悬浊液声传播衰减模型,并在实验室利用配制的玻璃微珠和二氧化钛悬浊液进行了5个频率下的声衰减测量,结果与衰减模型进行的数值模拟吻合。通过对渤海某淤积港口的声衰减测量验证,该模型同样适用于浑浊海域的声传播衰减计算。这对于浑浊海域的声纳探测和设计具有重要的工程价值。

Applying the theory of Bouguer-Lambert-Beer-Law, the sound propagation attenuation model in suspensions of polydisperse particles was deduced. And in the laboratory, with mixed glass beads suspensions and aqueous titanium dioxide suspensions, the sound attenuation under five different frequencies was carried out. The results show that the numerical simulation values of the attenuation model are consistent with the experiments values. In addition, the actual sound attenuation measurements in the Bohai sea port showed that the attenuation model is applicable to the sound attenuation calculation in turbid sea area similarly. Therefore, the attenuation model has very important engineering value to the sonar detection and design in turbid seas.