Article(id=1207658086450434063, tenantId=1146029695717560320, journalId=1205116883411038211, issueId=1207658076900008717, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1765857725012, onlineDateStr=2025-12-16, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1765857725012, onlineIssueDateStr=2025-12-16, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1765857725012, creator=13701087609, updateTime=1765857725012, updator=13701087609, issue=Issue{id=1207658076900008717, tenantId=1146029695717560320, journalId=1205116883411038211, year='2025', volume='23', issue='2', pageStart='189', pageEnd='376', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1765857722735, creator=13701087609, updateTime=1765862348176, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1207677477451833566, tenantId=1146029695717560320, journalId=1205116883411038211, issueId=1207658076900008717, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1207677477451833567, tenantId=1146029695717560320, journalId=1205116883411038211, issueId=1207658076900008717, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=259, endPage=263, ext={EN=ArticleExt(id=1207658086760812591, articleId=1207658086450434063, tenantId=1146029695717560320, journalId=1205116883411038211, language=EN, title=Rapid prediction and verification of vehicle rearview mirror aerodynamic noise based on SNGR method, columnId=1207658079282373410, journalTitle=Chinese Journal of Construction Machinery, columnName=Design Manufacture and Quality Control, runingTitle=null, highlight=null, articleAbstract=
To achieve rapid prediction of aerodynamic noise in the rearview mirror area of vehicles, an stochastic noise generation and propagation (SNGR) method is adopted. Unlike general aerodynamic noise simulation methods, this method is based on the reynolds-averaged navier-stokes (RANS) equation to solve the steady flow field, reconstructing the sound source term through a velocity random model, and finally using the finite interpolation method to solve the acoustic analogy equation, greatly reducing the computational period of aerodynamic noise simulation. Based on actual vehicle data, a wind tunnel model is established, with a speed of 120 km/h as the simulation condition. Under the same conditions, the SNGR method and the general unsteady method using large eddy simulation as the flow field calculation model are respectively used for simulation. The results show that the calculation time of the SNGR method is greatly reduced, and the calculation results are consistent in the frequency range of 500-5 000 Hz, proving the efficiency of this method. On this basis, the flow field results in the rearview mirror area are analyzed, and the design of the car rearview mirror is optimized based on the principle of aerodynamic noise generation. Install the rearview mirrors before and after optimization on the entire vehicle for wind tunnel experiments, and verify the accuracy of the SNGR method calculation results by comparing the sound pressure level reduction before and after rearview mirror optimization. The simulation and experimental error of this method is between 4%-5%, proving that this method can be used in the optimization stage of aerodynamic noise performance of vehicle rearview mirrors.
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为实现车辆后视镜区域气动噪声的快速预测,采用一种随机噪声产生和传播(SNGR)。不同于一般气动噪声模拟方法,该方法基于雷诺平均纳维-斯托克斯(RANS)方程求解定常流场,通过速度随机模型重构声源项,最后采用有限插分法求解声类比方程,大大缩短气动噪声模拟的计算周期。根据实车数据建立风洞模型,以速度120 km/h为模拟工况,在相同条件下,分别采用SNGR方法和以大涡模拟为流场计算模型的一般非定常方法进行模拟。结果表明,SNGR方法的计算时间大大缩短,且计算结果在500~5 000 Hz频段内具有一致性,证明了该方法的高效性。在此基础上,对后视镜区域流场结果进行分析,根据气动噪声的产生原理,对汽车后视镜造型进行优化。将优化前后的后视镜分别装在整车上进行风洞实验,通过对比后视镜优化前后的声压级降低量验证SNGR方法计算结果的准确性,该方法模拟与实验误差在4%~5%之间,证明了该方法可用于车辆后视镜气动噪声性能的优化阶段。
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2018., articleTitle=Investigation of interior noise from generic side-view mirror using incompressible and compressible solvers of DES and LES, refAbstract=null)], funds=[Fund(id=1207748673124012076, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, awardId=201901D111245, language=CN, fundingSource=山西省基础研究计划面上基金资助项目(201901D111245), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1207748665423270542, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, xref=null, ext=[AuthorCompanyExt(id=1207748665431659150, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, companyId=1207748665423270542, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1. Science and Technology Quality Department of China Construction Machinery Industry Association, Beijing 100176, China), AuthorCompanyExt(id=1207748665435853456, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, companyId=1207748665423270542, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1.中国工程机械工业协会 科技质量部,北京 100176)]), AuthorCompany(id=1207748665540711061, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, xref=null, ext=[AuthorCompanyExt(id=1207748665549099670, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, companyId=1207748665540711061, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2. College of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, Shanxi, China), AuthorCompanyExt(id=1207748665553293975, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, companyId=1207748665540711061, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2.太原科技大学 机械工程学院,山西 太原 030024)])], figs=[ArticleFig(id=1207748669596603237, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, language=EN, label=Fig.1, caption=
The relationship between wavenumber and unit vector space, figureFileSmall=684jUiE0Bu3wCEoXDM9rvQ==, figureFileBig=XKi/k0gZ687Gmrix9VxJDw==, tableContent=null), ArticleFig(id=1207748669701460850, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, language=CN, label=图1, caption=
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The wind tunnel model, figureFileSmall=8wn+Dd5WCdJHw9Ac9/xLLw==, figureFileBig=xvj1du6GjXoeauKKQFYKUA==, tableContent=null), ArticleFig(id=1207748670259303320, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, language=CN, label=图3, caption=
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仿真结果对比, figureFileSmall=u6+AoEmRdAqagkRBWdkAGA==, figureFileBig=fFDIG2UtfkTVaY9gLkxy8w==, tableContent=null), ArticleFig(id=1207748670594847677, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, language=EN, label=Fig.5, caption=
Rearview mirror optimization parameter structure diagram, figureFileSmall=PSiTfaBd/dpTuxoY/MQamw==, figureFileBig=K6iapkkj1ehyI1b7W81sMg==, tableContent=null), ArticleFig(id=1207748670695510982, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, language=CN, label=图5, caption=
后视镜优化参数结构简图, figureFileSmall=PSiTfaBd/dpTuxoY/MQamw==, figureFileBig=K6iapkkj1ehyI1b7W81sMg==, tableContent=null), ArticleFig(id=1207748670808757195, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, language=EN, label=Fig.6, caption=
Velocity cloud map of section height H=0.88 m, figureFileSmall=2gAHIS6AYCZl8iuCo4UmPg==, figureFileBig=b+m+guD2GdmvEtz6jZaW+Q==, tableContent=null), ArticleFig(id=1207748670922003412, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, language=CN, label=图6, caption=
截面高度H=0.88 m的速度云图, figureFileSmall=2gAHIS6AYCZl8iuCo4UmPg==, figureFileBig=b+m+guD2GdmvEtz6jZaW+Q==, tableContent=null), ArticleFig(id=1207748671039443930, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, language=EN, label=Fig.7, caption=
Optimize the average sound pressure level cloud map of the rear side, figureFileSmall=b0jSKw8Z0Uxzv6XeJAvkrw==, figureFileBig=iMGhfjGCLtJoAmDtLM/JcQ==, tableContent=null), ArticleFig(id=1207748671127524321, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, language=CN, label=图7, caption=
优化后侧窗玻璃平均声压级云图, figureFileSmall=b0jSKw8Z0Uxzv6XeJAvkrw==, figureFileBig=iMGhfjGCLtJoAmDtLM/JcQ==, tableContent=null), ArticleFig(id=1207748671236576235, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, language=EN, label=Fig.8, caption=
Comparison of sound pressure levels before and after optimization, figureFileSmall=L5Qp7b2eloRu9Hi8gx7/Zg==, figureFileBig=F9o/g0GzUESs+g0sgT8v6Q==, tableContent=null), ArticleFig(id=1207748671366599673, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, language=CN, label=图8, caption=
优化前后声压级对比, figureFileSmall=L5Qp7b2eloRu9Hi8gx7/Zg==, figureFileBig=F9o/g0GzUESs+g0sgT8v6Q==, tableContent=null), ArticleFig(id=1207748671475651584, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, language=EN, label=Fig.9, caption=
Comparison of experimental and simulation reductions, figureFileSmall=Skg/NQxsRRU9qKHNv/E9nw==, figureFileBig=XGPTyUhNsq281UduHFhU4A==, tableContent=null), ArticleFig(id=1207748672691998728, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, language=CN, label=图9, caption=
实验与仿真降低量对比, figureFileSmall=Skg/NQxsRRU9qKHNv/E9nw==, figureFileBig=XGPTyUhNsq281UduHFhU4A==, tableContent=null), ArticleFig(id=1207748672796856336, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, language=EN, label=Tab.1, caption=
Simulation and experimental sound pressure level error comparison
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 风洞实验/dB(A) | SNGR方法/dB(A) | 误差/% |
|---|
| 平均值 | 9.306 | 9.748 | 4.75 |
| 均方根值 | 9.811 | 9.400 | 4.29 |
), ArticleFig(id=1207748672897519641, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658086450434063, language=CN, label=表1, caption=
仿真和实验声压级误差对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 风洞实验/dB(A) | SNGR方法/dB(A) | 误差/% |
|---|
| 平均值 | 9.306 | 9.748 | 4.75 |
| 均方根值 | 9.811 | 9.400 | 4.29 |
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