某邮轮主推进柴油机的辐射噪声仿真分析

Radiated Noise Simulation of Main Propelling Diesel of Passenger Liner

以某邮轮中速主推进柴油机为对象,对该型柴油机的辐射噪声进行仿真分析。阐述了柴油机辐射噪声计算时的模型建立、激励力确定、声压计算方法;分析了该型柴油机主要零部件对整机振动噪声的影响;实现了该型柴油机辐射噪声水平的预估。仿真分析结果可用于该邮轮主推进柴油机的减振降噪措施设计。

Radiated noise simulation of the middle speed diesel for a passenger liner is studied, and the calculation modeling, loading and acoustic pressure computing method of the marine diesel are also dis- cussed. The influence of engine＇ s main components on the whole engine＇s vibration noise is studied, and the acoustic evaluation of the diesel engine＇s radiated noise is accomplished, which could be applied in the noise reduction design of the passenger liner＇ s main propelling diesel.