水管路系统低噪声配置研究

管路系统的水力功能和振动噪声性能相互影响皆为设计目标。舰船领域中冷却水管路系统长期开启，管路系统振动及船外辐射噪声受到关注。为实现船外辐射噪声的控制，有必要建立水力和声学的协调设计技术。文章以低噪声配置原则为管路系统设计指导，基于复杂水力管网计算方法进行管系合理配置，基于管系等效水梁及管系—船体声固耦合整体建模方法进行振动及船外辐射噪声计算评估，形成了水力与声学协调的管路系统低噪声配置技术流程。以典型冷却水管路系统为对象，初步测试验证了配置原则和计算方法。

Low Noise Collocation on Fluid Pipeline System

Fluid dynamic and vibration and noise characteristics of pipeline systems are both focused and analyzed as design targets. Cooling pipeline systems of ships are always running during the sail time, outboard noise radiation of cooling pipeline systems is distinct. Low noise collocation method should be proposed in order to control cooling pipeline noise. In this paper, fluid dynamic method of piping systems is established based on one dimensional hydraulic theory, vibration and noise radia-tion numerical method of piping systems is established based on finite element method under acous-tic-vibration and equivalent fluid filled beam model theories. Low noise collocation strategy includ-ing principle, fluid collocation method and noise radiation evaluation method is constructed in the end. Finally, typical cooling pipeline system is analyzed and collocation method is elementarily ver-ified experimentally.