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本文阐述了水下流噪声产生的机理以及物体表面状态性能对湍流边界层的影响。对近年来的减阻降噪措施进行了简要的评论后,特别指出了低壁面相互作用涂层可减小壁面的切变应力,增大排挤厚度,从而降低航行体的阻力和噪声。这种涂层还具有优异的耐水性和耐候性,应作为一种实用的降噪措施给予足够的重视。
This paper describes the mechanism of underwater flow noise generation and the effect of surface condition on the turbulent boundary layer. After a brief comment on the drag reduction and noise reduction measures in recent years, it is pointed out that the low wall interaction coating can reduce the shear stress on the wall surface and increase the squeezing thickness so as to reduce the resistance and noise of the navigation body. This coating also has excellent water resistance and weatherability, should be given as a practical noise reduction measures give enough attention.