摘要
科考平台释放科考设备入水会产生流致噪声,不利于其信息收集的精确性,为此文中设计了新型的滑道入水装置.基于分离涡模拟(DES),采用SST k-omega二方程湍流模型,建立了物体由滑道入水的数值模型,结合FW-H声学模块,对物体入水时的噪声特性进行了计算分析,给出了滑道截面面积优化和增加空腔的噪声抑制措施,进一步分析了其噪声抑制效果.结果表明:物体入水过程产生的噪声能量集中在低频段,在平台左舷和右舷方向产生噪声较大,滑道截面面积优化和增加空腔均有良好的噪声抑制效果.
The platform releases the water of scientific research equipment into the water,resulting in flow-induced noise,which is not conducive to the accuracy of information collection.Therefore,a new type of slideway water inlet device was designed in this paper.Based on the separated vortex simulation(DES)and SST k-omega two-equation turbulence model,a numerical model of an object entering the water from a slideway was established.Combined with FW-H acoustic module,the noise characteristics of objects entering water were calculated and analyzed.The noise suppression measures of optimizing the section area of slideway and increasing the cavity were given,and the noise suppression effect was further analyzed.The results show that the noise energy generated by the object entering the water is concentrated in the low frequency band,and the noise generated in the port and starboard directions of the platform is larger.By optimizing the section area of the slideway and increasing the cavity,the noise can be suppressed effectively.
作者
黄黎慧
赵永振
宁小深
李福庚
王子斌
杨衡
HUANG Lihui;ZHAO Yongzhen;NING Xiaoshen;LI Fugeng;WANG Zibin;YANG Heng(Ship and Ocean Engineering, Wuhan Technical College of Communications, Wuhan 430065, China;China Ship Development and Design Center, Wuhan 430064, China;College of Shipbuilding and Engineering, Harbin Engineering University, Harbin 150001, China)
出处
《武汉理工大学学报（交通科学与工程版）》
2022年第3期455-460,466,共7页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国家自然科学基金(52071105)
中央高校基本科研业务费(3072020CFT0103)
黑龙江省自然科学基金(LH2019E024,QC2018052,YQ2019E010)。
关键词
流致噪声
入水砰击
噪声抑制
数值模拟
噪声特性
flow-induced noise
water attack
suppression measures
numerical simulation
noise characteristics
