基于仿生沟槽的船舶管路分流构件声学特性分析  

Analysis of Acoustic Characteristics of Ship Pipe Shunt Components Based on Biomimetic Riblets

作　　者：刘和明 孙凌寒[2] 吴江海[2] 钱梵梵 马齐江 王凯[4] Liu Heming;Sun Linghan;Wu Jianghai

机构地区：[1]安徽省留香特种船舶有限责任公司,江苏省镇江市212013 [2]中国船舶科学研究中心 [3]上海理工大学机械工程学院 [4]江苏大学流体机械工程技术研究中心

出　　处：《工程机械》2024年第12期42-51,I0019,共11页Construction Machinery and Equipment

基　　金：国家自然科学基金(52379090)。

摘　　要：为了研究仿生沟槽结构对船舶管路降噪的影响规律,数值分析V型和Space-V型沟槽对90°弯管和三通管内部流动和噪声特性的影响,结果表明:布置沟槽的仿生管在管壁处的低速区域较原模型更大,仿生沟槽能够有效抑制管路中涡的产生。Space-V型沟槽对管路流动噪声和结构辐射噪声的抑制作用更好。在90°弯管中,监测点A、B、C处的流动噪声总声压级相比于原模型分别下降了16.34%、16.36%和16.09%;监测点A1、B1、C1处的结构辐射噪声总声压级相比于原模型分别下降了12.14%、16.77%和12.07%。在三通管中,监测点A、B、C处的流动噪声总声压级相比于原模型分别下降了4.69%、3.82%和7.32%;监测点A1、B1、C1处的辐射噪声总声压级相比于原模型分别下降了20.93%、21.18%和22.35%。To study the influence law of biomimetic riblet structure on noise reduction of ship pipes,the influence of V-shaped and Space-V-shaped riblets on the flow and noise characteristics inside90 bends and tees is numerically analyzed.The results show that,the biomimetic pipes with riblets have a larger low-speed area at the pipe wall than the original model,and the biomimetic riblets can effectively inhibit the generation of vortices in the pipe.Space-V-shaped riblets have a better inhibition effect on the flow noise of the pipe and the radiated noise of the structure.In the 90 bend,the total sound pressure levels of flow noise at monitoring points A,B and C decreased by 16.34%,16.36%and 16.09%,respectively,compared with the original model,while the total sound pressure levels of the radiated noise of the structure at monitoring points A_1,B_1and C_1 decreased by 12.14%,16.77%and12.07%,respectively.In the tee,the total sound pressure levels of flow noise at monitoring points A,B and C decreased by 4.69%,3.82%and 7.32%,respectively,compared with the original model,while the total sound pressure levels of the radiated noise at monitoring points A_1,B_1and C_1 decreased by 20.93%,21.18%and22.35%,respectively.

关 键 词：船舶管路分流构件 仿生沟槽 流动噪声 辐射噪声 

分 类 号：U664.84[交通运输工程—船舶及航道工程]