管壳式换热器管程消声性能分析  

Analysis of acoustic attenuation performance of shell and tube heat exchangers

作　　者：龚京风 江致远 袁兴军[2] 宣领宽[2] GONG Jingfeng;JIANG Zhiyuan;YUAN Xingjun;XUAN Lingkuan(School of Automobile and Traffic Engineering,Wuhan University of Science and Technology,Wuhan 430065,China;State Key Laboratory of Ship Vibration and Noise,China Ship Development and Design Center,Wuhan 430064,China)

机构地区：[1]武汉科技大学汽车与交通工程学院,湖北武汉430065 [2]中国舰船研究设计中心船舶振动噪声重点实验室,湖北武汉430064

出　　处：《华中科技大学学报（自然科学版）》2020年第12期55-60,共6页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51909197);湖北省自然科学基金资助项目(2019CFB136);武汉科技大学2019年度国防预研基金资助项目(GF201911)。

摘　　要：为了分析利用换热器管程降低上游流噪声的可行性,试验分析管壳式换热器的消声性能,基于频域有限元法建立了管壳式换热器管程声学性能数值预报方法.对比基于纯声场模型和声-结构耦合模型计算得到的结果,分析换热器管程传递损失及声-结构耦合效应的影响,通过在进口设置插入管尝试改善换热器管程消声性能.结果表明:管壳式换热器管程具备消声能力,在1阶通过频率前消声量较小,在1阶通过频率后具有明显的消声效果;声-结构耦合效应使得传递损失曲线向低频方向移动;通过合理设置插入管长度,可以有效提高1阶和2阶通过频率处的消声量.In order to analyze the feasibility of reducing upstream low frequency flow noise using the tube side of heat exchangers,the acoustical performance of shell and tube heat exchanger was studied experimentally,and numerical prediction methods based on frequency domain finite element method were established.By comparing the results obtained from the pressure acoustic physics module and the acoustic-structure interaction physics module,the transmission loss(TL) in the tube side of heat exchanger was analyzed,and the effects of the acoustic-structural coupling were discussed.The influences of inserted tubes on the TL were studied.It is found that the pipe side of the shell and tube type heat exchanger has the capability of noise elimination,and the tube side of heat exchanger is of small noise attenuation before the first passing frequency,while has obvious noise reduction after the first passing frequency in the calculated frequency band.The acoustic-structure coupling makes the TL curve move to the lower frequency band.By designing and arranging an appropriated inserted tube,the noise attenuation can be increased at the first and the second passing frequencies.

关 键 词：换热器 水管路 消声性能 流噪声 仿真分析 

分 类 号：TB535[理学—物理]