循环水管路系统的流噪声实验研究  

Flow Noise Experimental Study on Circulating Water Pipeline System

作　　者：李宁[1] 王献忠[1] 林鸿洲 喻敏[1] LI Ning;WANG Xianzhong;LIN Hongzhou;YU Min(School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology Wuhan,430063,China)

机构地区：[1]武汉理工大学船海与能源动力工程学院,武汉430063

出　　处：《振动．测试与诊断》2023年第5期909-914,1037,共7页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(51779201)。

摘　　要：为了深入研究循环水管路系统的流噪声及其控制方法,基于自主搭建的循环水管路系统实验平台进行水管路噪声实验研究。首先,通过测量背景噪声、改进水听器安装方法等措施改善水管路噪声实验环境,保证实验数据的合理性和可靠性;其次,对T型三通管与弯管分别进行管路噪声实验研究;最后,将实验结果与数值计算结果进行了对比分析。结果表明,T型三通管的流噪声实验结果与数值计算结果吻合较好,弯管是整体趋势吻合较好但局部峰值略有差异,证明了实验方法的可靠性。基于此实验方法对增设导流叶片管路的降噪效果进行了研究,得到弯管增设导流叶片的降噪效果要优于T型管,这是因为导流叶片设置在T型三通管中部,虽有一定的导流作用,但会导致过流面积减小,产生更大的流速,影响最终的降噪效果。In order to study the flow noise of the circulating water pipeline system and its control method,experiments of flow noise are carried out based on the self-built circulating water pipeline system.Tested environment is improved to ensure the rationality and reliability of the experimental data by measuring the background noise and improving the installation method of the hydrophone.And then,the measured noise results of the Ttube and curved tube are compared with the numerical results.Experimental results of the T-tube is in good agreement with the numerical results,while the experimental results of the curved tube is slightly different from the numerical results.Based on this experimental study on the noise reduction effect of the pipeline with guide vanes,the curved tube with guide vanes is better than that of the T-tube.The main reason is that the guide vane is set in the middle of the T-tube,which has a certain guiding effect.However,it will reduce the flow area to produce a greater flow velocity and affect the final noise reduction effect.

关 键 词：水管路系统 背景噪声 水听器安装 噪声验证 导流叶片 

分 类 号：TB535[理学—物理]