方超,马士虎,蔡标华,俞健
FANG Chao,MA Shi-hu,CAI Biao-hua,YU Jian

• 1:武汉第二船舶设计研究所

摘要(Abstract)：

为了控制船舶系统振动和噪声,对自流注水系统的主要噪声源进行了分析。基于气蚀噪声和湍流噪声形成的机理,提出了三级节流降压的优化设计方案,改善系统压力分布和湍流度。对单级节流系统和三级节流系统进行流场和声场仿真计算,对比仿真计算结果表明,改进后系统的噪声有显著的下降,达到了预期的降噪目标。
In order to control the noise and vibration of shipboard seawater system,the paper analyzes the main noise source of water injection system. Based on the formation mechanism of cavitation noise and turbulent noise,the optimal design of the three stage throttle depressurization was proposed to ameliorate the system pressure distribution and turbulent intensity. The flow field and sound field of single stage and three stage throttling system was simulated. The simulation results show that the noise of the improved system has dropped significantly to reach the expected noise control goals.

关键词(KeyWords)： 大压差;多级节流;湍流噪声;气蚀噪声
high differential pressure;multistage throttle;turbulent noise;cavitation noise

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 方超,马士虎,蔡标华,俞健
FANG Chao,MA Shi-hu,CAI Biao-hua,YU Jian

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