摘要
基于流体—固体—声学联合数值仿真方法探究了纵缝式开孔平板水动力噪声特性。以典型纵缝式开孔平板为研究对象,采用流体大涡模拟、声学广义FW-H方程和流激结构振声理论,分析了纵缝式开孔平板表面脉动载荷、流噪声和流激振动噪声水平,并确定水动力噪声主导分量。分析结果表明,在3 m/s流速下,四周刚固的纵缝式开孔平板表面脉动载荷和流噪声水平整体上随着频率的增大而逐渐减小,开孔位置后侧的脉动压力及流激噪声显著高于其余位置,流噪声是纵缝式开孔平板水动力噪声的主要成分。
Based on flow-structure-acoustic numerical simulation method,the characteristics of hydrodynamic noise of steel plate with longitudinal water holes are explored.Typical plate with longitudinal water holes is taken as research object,large eddy simulation,acoustic FW-H equation,and solving theory of flow-excited vibration and noise are used.By these methods,surface fluctuating load,flow noise and flow-induced structural noise of plate with holes are analyzed,and dominant component of hydrodynamic noise is specified.Aiming at plate with longitudinal holes with rigid surrounding at the flow rate of 3m/s,the analysis results show that,with the increasement of frequency,surface fluctuating load and flow noise level decrease gradually.Fluctuating pressure and flow-excited noise at the rear side of the opening position are significantly higher than those at other positions.Flow noise is specified to be the dominant component of hydrodynamic noise of plate with holes.
作者
邹通达
李广
谷瑞钊
赵亚星
周凌波
ZOU Tongda;LI Guang;GU Ruizhao;ZHAO Yaxing;ZHOU Lingbo(China Ship Scientific Research Center,Wuxi 214082,China;Taihu Laboratory of Deepsea Technological Science,Wuxi 214082,China)
出处
《舰船科学技术》
北大核心
2025年第9期33-39,共7页
Ship Science and Technology
关键词
纵缝式开孔平板
水动力噪声
脉动载荷
流激振动
主导分量
plate with longitudinal holes
hydrodynamic noise
fluctuating pressure
flow-induced vibration
dominant component
作者简介
邹通达(1998-),男,硕士,助理工程师,研究方向为船舶结构振动噪声。
