技术·创新/TechnologyandInnovation管道中消音器声场仿真分析SimulationAnalysisofSoundFieldofSilencerinPipeline潘朝远（TCL空调器（中山）有限公司高雪燕李嘉辉中山528427)摘要：为了解管道中消音器的传递损失和声压脉动特性，以抗性消音器为研究对象，基于声学有限元法对消音器的消音量进行理论验证和仿真分析。讨论了扩张室有无过渡段、连接管插人深度对消音器消音特性的影响；对比分析了管道中消音器不同安装位置对整体传递损失的影响；进行瞬态声学分析，比较有无消音器的声压脉动情况。分析结果表明：消音器扩张室带有过渡段会导致实际模型和理论消音量存在较大误差；连接管插人19mm，最大消音量比原模型增加50dB；消音器靠近声源安装可保证稳定的消音性能；消音器能大幅度降低管道中的声压脉动幅值，最大降幅为80%。关键词：管道；抗性消音器；传递损失；频域/时域分析Abstract:Inordertounderstandthetransmissionlossandsoundpressurepulsationcharacteristicsofthesilencerinthetube,thesilencerwastakenastheresearchobject,andtheoreticalverificationandsimulationanalysiswerecarriedoutbasedontheacousticfiniteelementmethod.Theinfluencesoftheexpansionchamberwithorwithouttransitionsectionandtheinsertiondepthoftheconnectingtubeonthesilencer'ssilencercharacteristicswerediscussed.Theeffectsofdifferentinstallationpositionsofsilencerontheoveralltransmissionlossarecomparedandanalyzed.Transientacousticanalysiswasperformedtocomparesoundpressurepulsationwithorwithoutsilencer.Theanalysisresultsshowthatthereisalargeerrorbetweentheactualmodelandthetheoreticalmufflerwithatransitionsectioninthemufflerexpansionchamber.Theconnectingtubeisinserted19mm,andthemaximumnoisereductionisincreased50dBcomparedwiththeoriginalmodel;Thesilencerisinstalledclosetothesoundsourcetoensurestablesilencingperformance;Thesilencercangreatlyreducetheamplitudeofsoundpressurepulsationinthepipeline,themaximumreductionis80%.Keywords:pipeline;resistantsilencer;yransferloss;frequencydomain/timedomainanalysis引言扩张式抗性消声器凭借其结构简单、成本低廉的优势，大量应用在家用电器.2]和汽车列车[3产品上，其消声原理是利用管道内截面的突变，使声波发生反射和干涉，降低声能量，从而实现消...
