文献类型：期刊文献

中文题名：考虑声固耦合效应的输流管道声振特性分析

英文题名：Analysis of vibration and sound characteristics of fluid conveying pipeline considering the effect of acoustic-solid coupling

作者：陈德锦[1];严谨[2];罗杨阳[2];黄超[1];邹律龙[2]

机构：[1]广东海洋大学机械与动力工程学院,广东湛江524088;[2]广东海洋大学海洋工程学院,广东湛江524088

年份：2021

卷号：16

期号：3

起止页码：137

中文期刊名：中国舰船研究

外文期刊名：Chinese Journal of Ship Research

收录：CSTPCD、、北大核心、CSCD、北大核心2020、CSCD_E2021_2022

基金：广东省自然科学基金资助项目(2017A030313275)。

语种：中文

中文关键词：声固耦合;输流管道;参数化扫描;特征模态;

外文关键词：acoustic-solid coupling;fluid conveying pipeline;parametric scanning;eigen mode;

中文摘要：[目的]为准确掌握输流管道的声振特性,对其开展数值模拟研究。[方法]首先,基于声固耦合理论建立输流管道数值模型;然后,通过参数化扫描求解管道声振模态的频散曲线,分析弹性壁输流管道内部分别为空气、水和原油时的频散特性以及管道绝对声压应力分布情况,研究管壁厚度、弹性壁和硬声场壁对管道频散特性的影响。[结果]结果显示:管壁厚度对管道弹性波传播模态影响较小,随着管壁厚度的增大,频散曲线向高频偏移,其影响主要在截止频率上;声固耦合的影响使得弹性管道模态数增加,增加的模态数主要是管壁形变模态;弹性壁与硬声场壁管内绝对声压分布情况基本一致;管道内部为液体或气体时其频散特性区别显著,内部为水或原油时频散特性较为相似,不过直通模式有所区别。[结论]研究结果可为舰船的输流管道声波法故障检测提供一定的理论依据。

外文摘要：[Objectives]In order to accurately grasp the vibration and sound characteristics of pipelines,a numerical simulation is carried out.[Methods]Based on the theory of acoustic-solid coupling,a numerical model of a pipeline is established.The dispersion curve of the vibration and acoustic modes of the pipeline is solved by parametric scanning.The dispersion characteristics of the elastic wall pipeline with air,water and crude oil,as well as the absolute pressure stress distribution in the pipeline,are analyzed,and the effects of wall thickness,elastic wall and hard sound field wall on the dispersion characteristics of the pipeline are studied.[Results]The results show that wall thickness has little effect on the propagation mode of elastic waves in the pipeline,and the dispersion curve is shifted to high frequency with the increase in wall thickness,mainly influencing the cut-off frequency.Due to the effects of acoustic-solid coupling,the number of modes of the elastic pipeline increases,and the increased mode number is mainly the deformation mode of the pipeline wall.The absolute sound pressure distribution in the elastic wall is basically the same as that in the hard sound field wall.The dispersion characteristics of liquid or gas inside are different,while the dispersion characteristics of water or oil inside are similar,but the direct modes of the two are different.[Conclusions]The results of this study can provide a theoretical basis for the pipeline acoustic detection of ships.