海洋气泡幕降噪参数对降噪效果影响的数值分析

Numerical Analysis on Influence of Parameters of Air Curtain Noise Reduction System on Noise Reduction Effect of Offshore Platform

为降低海洋平台打桩噪声,根据气泡幕对海洋平台打桩噪声的衰减作用,采用数值方法建立气泡幕降噪模型。改变气泡幕厚度、空气体积分数、通气量和气泡幕与噪声源距离,研究参数变化对降噪效果的影响。研究发现不同参数对降噪效果的影响不同,在工程实际中设计气泡幕时应综合考虑最优的降噪效果和最高的经济效益。

In order to reduce the noise of offshore platform piling,according to the attenuation effect of air curtain on offshore platform piling noise,an air curtain noise reduction model is established by numerical simulation method.By changing the thickness of air curtain layer,air volume fraction,ventilation rate and distance between air curtain and noise source,the influence of the parameter changes on the noise reduction effect is studied.It is found that different parameters are of different influences on the noise reduction effect,and the optimal noise reduction effect and the highest economic benefit should be considered comprehensively when adopting air curtain noise reduction in engineering practice.