华中科技大学学报（自然科学版）2023，Vol.51Issue(12)：123-129,7.DOI:10.13245/j.hust.231278
基于仿生调控的通水弯管声振特性研究
Research on acoustic and vibration characteristics of seawater pipeline based on bionic control
摘要
Abstract
Biological structures were reasonably simplified based on bionics principles,the simplified bionic texture was applied to seawater pipelines,and the acoustic characteristics of seawater pipelines with bionic texture were analyzed.Based on the circulating water pipeline experimental platform,the experimental study of typical seawater pipeline accessories was carried out,which proved the reliability of the numerical calculation method.Further experimental research was carried out on seawater pipelines with bionic texture to verify the effectiveness of bionic texture in vibration and noise reduction.The results show that,at low frequencies,the pipeline is mainly dominated by flow noise,and the peak frequency of flow noise depends on the acoustic mode of the pipeline.The existence of bionic texture can improve the flow velocity distribution in the outlet section,inhibit the fluid separation phenomenon caused by excessive wall velocity,and reduce the generation of vorticity.The bionic texture arrangement in the middle of the inlet section,the tail of the inlet section,the head of the outlet section and the middle of the outlet section can obviously improve the flow field separation,which can effectively inhibit the low-speed fluid accumulation from the inside of the elbow,and has the best effect on the acoustic vibration characteristics of the elbow.关键词
仿生织构/混合计算方法/大涡模拟/流噪声/声振特性Key words
bionic texture/hybrid computational methods/large eddy simulation/flow noise/acoustic and vibration characteristics分类
交通工程引用本文复制引用
王献忠,冯伟佳,李宁..基于仿生调控的通水弯管声振特性研究[J].华中科技大学学报（自然科学版）,2023,51(12):123-129,7.基金项目
国家自然科学基金资助项目(51779201,52271291) （51779201,52271291）
装备预研教育部联合基金资助项目(6141A02022139). （6141A02022139）
