船舶螺旋桨叶片与艉部湍流场互作用噪声的预报研究  

Prediction of noise induced by interaction between turbulent flow and propeller blades

作　　者：朱锡清[1] 李亚[1] 孙红星[1] 

机构地区：[1]中国船舶科学研究中心,无锡214082

出　　处：《声学技术》2006年第4期361-364,共4页Technical Acoustics

摘　　要：低噪声特性是螺旋桨设计者所追求的目标之一。当船尾的螺旋桨周期性旋转在空间和瞬时随机的非均匀流场中时,在螺旋桨叶片上就会产生升力脉动,从而辐射出离散谱噪声和低频宽带噪声。利用湍流谱和FfowcsWilliams-Hawkings方程可以获得低频宽带噪声级。这种方法可用于实船螺旋桨噪声预报和低噪声设计,这对提高舰船安静化程度有重要的现实意义。An important feature to be sought in propeller design is low noise. When the propeller rotates periodically in a non-uniform flow field, which varies irregularly with space and time, discrete and broadband non-cavitation noise is radiated due to the lift pulsation occurred on the blade surface. A method is developed for prediction of low-frequency broadband propeller noise based on combination of the spectrum of turbulent flow and the Ffowcs Williams-Hawkings equations. Examples show validity and practicality of the method.

关 键 词：螺旋桨 湍流 低频宽带噪声 

分 类 号：TB517[理学—物理]