Article(id=1243304969537958393, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243304968753623545, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2025.02.013, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1724083200000, receivedDateStr=2024-08-20, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1774356604226, onlineDateStr=2026-03-24, pubDate=1739980800000, pubDateStr=2025-02-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774356604226, onlineIssueDateStr=2026-03-24, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774356604226, creator=13701087609, updateTime=1774356604226, updator=13701087609, issue=Issue{id=1243304968753623545, tenantId=1146029695717560320, journalId=1240685776644648972, year='2025', volume='29', issue='2', pageStart='171', pageEnd='335', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1774356604040, creator=13701087609, updateTime=1774356967523, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1243306493370544137, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243304968753623545, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1243306493370544138, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243304968753623545, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=300, endPage=311, ext={EN=ArticleExt(id=1243304969844142589, articleId=1243304969537958393, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=Numerical simulations on the line spectra noise radiated by cavity flows--flow and acoustic modes, acoustic-vibration and flow-sound coupling, columnId=1241023038381158513, journalTitle=Journal of Ship Mechanics, columnName=Hydro/Structural Acoustics, runingTitle=null, highlight=null, articleAbstract=
The line spectra noise radiated by cavity flows greatly deteriorates the acoustic stealth of naval ships, whose formation mechanisms are related to the flow and acoustic modal effects, as well as the acoustic-vibration and flow-sound coupling effects. In this paper, the transient flow, equivalent sound source and acoustic fields of the simple square and typical cavity flows were numerically simulated, based on the CFD/CHA hybrid approaches. The applicability of the numerical methods was verified by comparison with experimental data of water tunnel test. The characteristics of the flow and acoustic modes of the cavity flows were concluded, particularly the effects of the acoustic-vibration coupling of elastic cavity walls and the complexity of cavity inner shapes upon the acoustic mode frequencies were quantitatively calculated. The important regularity, which the line spectrum induced by the effect of the first acoustic mode is the "decisive line spectrum" in the far-field radiated noise spectrum, is summed up. The tendency of the acoustic mode frequencies to shifting sharply towards lower frequencies under the actual cavity conditions was analyzed, indicating the necessity of avoiding the flow-sound coupling. The necessary condition of the cross-sectional area ratio for the related acoustic experiments in water tunnels was quantitatively established through an analytical solution. The research has an important guiding value for the designs of experimental modals.
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孔腔流动的线谱辐射噪声严重破坏舰艇声隐声性,其形成机理涉及流动模态、声学模态、声振耦合和流声耦合效应。本文基于CFD/CHA混合方法,数值模拟简单方腔和典型孔腔的瞬态流场、等效声源场、声学近场和远场,并通过与水洞实测数据对比验证数值方法适用性。本文归纳了孔腔流动模态和声学模态的特征规律,特别是定量计算了弹性壁面声振耦合效应和典型孔腔声腔复杂性对声学模态频率的影响;总结了远场辐射噪声频谱中,第一阶声学模态效应线谱成为“决定性线谱”的重要规律;分析了实际孔腔的声学模态频率大幅向低频偏移的趋势,从而显示了采取措施避免流声共振的必要性;通过解析求解,定量建立了相关水洞声学实验的截面积比必要条件,对实验模型设计具有重要指导价值。
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1964., articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1243304975972020884, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, xref=a., ext=[AuthorCompanyExt(id=1243304975980409493, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, companyId=1243304975972020884, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Schematic diagram of the formation mechanisms of line spectra noise radiated by cavity flows, figureFileSmall=o0JyC62MTh/hBRxKQai88A==, figureFileBig=IzY27gxclpdQBdpLB+2u8A==, tableContent=null), ArticleFig(id=1243304979709145896, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=CN, label=图1, caption=
孔腔流动辐射噪声线谱形成机理示意图, figureFileSmall=o0JyC62MTh/hBRxKQai88A==, figureFileBig=IzY27gxclpdQBdpLB+2u8A==, tableContent=null), ArticleFig(id=1243304979914666804, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=EN, label=Fig.2, caption=
Schematic diagram of the CFD/CHA hybrid approaches, figureFileSmall=OqsrZ8hf1KcFg6C4YQsbbg==, figureFileBig=+FPtBAK6PiWADiCkSdASzQ==, tableContent=null), ArticleFig(id=1243304980019524410, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=CN, label=图2, caption=
CFD/CHA混合方法示意图, figureFileSmall=OqsrZ8hf1KcFg6C4YQsbbg==, figureFileBig=+FPtBAK6PiWADiCkSdASzQ==, tableContent=null), ArticleFig(id=1243304980095021886, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=EN, label=Fig.3, caption=
Schematic diagrams of geometric models of the cavities, figureFileSmall=RquoQYhNdO83FCKbKQuPzg==, figureFileBig=CBSwoFtVwy3PXCVpAMVzjg==, tableContent=null), ArticleFig(id=1243304980170519364, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=CN, label=图3, caption=
孔腔几何模型示意图, figureFileSmall=RquoQYhNdO83FCKbKQuPzg==, figureFileBig=CBSwoFtVwy3PXCVpAMVzjg==, tableContent=null), ArticleFig(id=1243304980266988363, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=EN, label=Fig.4, caption=
Schematic diagrams of computational domains and boundary conditions of flow, acoustic source and sound fields, figureFileSmall=0arxNPqG571/vCH+GpGBVQ==, figureFileBig=0jh8w0yLT43F3SDyU9+M3Q==, tableContent=null), ArticleFig(id=1243304980350874445, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=CN, label=图4, caption=
流场、声源场和声场计算域和边界条件示意图, figureFileSmall=0arxNPqG571/vCH+GpGBVQ==, figureFileBig=0jh8w0yLT43F3SDyU9+M3Q==, tableContent=null), ArticleFig(id=1243304980564783954, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=EN, label=Fig.5, caption=
Location of acoustic measuring points, figureFileSmall=SSAwn6jMXlr2/ZQyxQmqTw==, figureFileBig=U+giVyogW70FfdM70d1DkA==, tableContent=null), ArticleFig(id=1243304980690613081, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=CN, label=图5, caption=
声学测量点位置图, figureFileSmall=SSAwn6jMXlr2/ZQyxQmqTw==, figureFileBig=U+giVyogW70FfdM70d1DkA==, tableContent=null), ArticleFig(id=1243304982284448607, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=EN, label=Fig.6, caption=
Comparisons between noise spectra from numerical simulation and experiment at measuring points, figureFileSmall=k/jQVQABTb/rxm6h0ayeKw==, figureFileBig=jVdEUoVhoBMsA0K/BLfMYA==, tableContent=null), ArticleFig(id=1243304982427054950, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=CN, label=图6, caption=
各测点处数值模拟与实验测试的噪声频谱对比, figureFileSmall=k/jQVQABTb/rxm6h0ayeKw==, figureFileBig=jVdEUoVhoBMsA0K/BLfMYA==, tableContent=null), ArticleFig(id=1243304982515135341, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=EN, label=Fig. 7, caption=
Contrast of characteristic frequencies of flow modes among the numerical simulation, experiment and Rossiter’s formula, figureFileSmall=VvSO+pvR8Bb1ud+f6UifGg==, figureFileBig=I37pk+zFDSq4FY+pe9ZyGA==, tableContent=null), ArticleFig(id=1243304982599021424, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=CN, label=图7, caption=
数值模拟、实验测试的流动模态特征频率与Rossiter[9]经验公式值的对比, figureFileSmall=VvSO+pvR8Bb1ud+f6UifGg==, figureFileBig=I37pk+zFDSq4FY+pe9ZyGA==, tableContent=null), ArticleFig(id=1243304982691296119, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=EN, label=Fig.8, caption=
Noise spectra and sound field of the cavity flow in the unbounded field, figureFileSmall=q9+kg5t9pYe6FIPehm1JAQ==, figureFileBig=LKg1tpZUpt9ZNocYwv1Xxg==, tableContent=null), ArticleFig(id=1243304982808736638, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=CN, label=图8, caption=
无界域中孔腔流动产生的噪声频谱和声场(来流速度:12 m/s), figureFileSmall=q9+kg5t9pYe6FIPehm1JAQ==, figureFileBig=LKg1tpZUpt9ZNocYwv1Xxg==, tableContent=null), ArticleFig(id=1243304982896817026, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=EN, label=Fig.9, caption=
Comparison of spatial characteristics of the flow modes between long and short cavity orifices, figureFileSmall=AXn2oUL8p/F/+ceh29b0ig==, figureFileBig=G7E15OsyhWjSnPkJV24yYQ==, tableContent=null), ArticleFig(id=1243304982972314504, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=CN, label=图9, caption=
长腔和短腔的流动模态空间特性对比(来流速度:12 m/s), figureFileSmall=AXn2oUL8p/F/+ceh29b0ig==, figureFileBig=G7E15OsyhWjSnPkJV24yYQ==, tableContent=null), ArticleFig(id=1243304983052006284, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=EN, label=Fig.10, caption=
Self-noise spectra at two locations in the simple square cavity, figureFileSmall=cXyUYyQFJn9PS6VLoU2XRg==, figureFileBig=Be1bi7c4LJ43g3GP+h2d1g==, tableContent=null), ArticleFig(id=1243304983144280975, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=CN, label=图10, caption=
简单方腔内两个位置的自噪声频谱(对腔口“白噪声”声源的响应), figureFileSmall=cXyUYyQFJn9PS6VLoU2XRg==, figureFileBig=Be1bi7c4LJ43g3GP+h2d1g==, tableContent=null), ArticleFig(id=1243304983240749971, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=EN, label=Fig.11, caption=
Effect of the thickness of elastic walls of cavities on the acoustic modes, figureFileSmall=BlWNrGIjxozhyXSSu5R3PA==, figureFileBig=UHxc0NtyKrLKuTQEzQP1iQ==, tableContent=null), ArticleFig(id=1243304983337218969, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=CN, label=图11, caption=
孔腔弹性壁面的厚度对其声学模态的影响, figureFileSmall=BlWNrGIjxozhyXSSu5R3PA==, figureFileBig=UHxc0NtyKrLKuTQEzQP1iQ==, tableContent=null), ArticleFig(id=1243304983450465178, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=EN, label=Fig.12, caption=
Near- and far-field noise spectra of the square cavity with elastic walls in the unbounded domain, figureFileSmall=7MG/PfpnFeilqEWkZQbf8Q==, figureFileBig=xb2v4tH5yZyijSGL5HpMNQ==, tableContent=null), ArticleFig(id=1243304983576294303, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=CN, label=图12, caption=
无界域中弹性壁面简单方腔流动产生的近场和远场噪声频谱(来流速度:12 m/s), figureFileSmall=7MG/PfpnFeilqEWkZQbf8Q==, figureFileBig=xb2v4tH5yZyijSGL5HpMNQ==, tableContent=null), ArticleFig(id=1243304983689540516, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=EN, label=Fig.13, caption=
Comparison of characteristic frequencies of acoustic modes of the typical cavities with different lengths of clapboard, figureFileSmall=SWfoKz9d8nIC8J8F9TwI9g==, figureFileBig=zl5kUpy6NR9wK8WXPBD2lw==, tableContent=null), ArticleFig(id=1243304983815369639, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=CN, label=图13, caption=
不同隔板长度下典型孔腔的声学模态特征频率比较, figureFileSmall=SWfoKz9d8nIC8J8F9TwI9g==, figureFileBig=zl5kUpy6NR9wK8WXPBD2lw==, tableContent=null), ArticleFig(id=1243304983966364591, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=EN, label=Fig.14, caption=
Near- and far-field noise spectra of the typical cavity with rigid walls in the unbounded domain, figureFileSmall=mRHxYZCWVfYL2F+i2xL8ZA==, figureFileBig=bjA0gwi1q348BTzZBQnrzQ==, tableContent=null), ArticleFig(id=1243304984092193716, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=CN, label=图14, caption=
无界域中刚性壁面典型孔腔流动产生的近场和远场噪声频谱(来流速度:12 m/s), figureFileSmall=mRHxYZCWVfYL2F+i2xL8ZA==, figureFileBig=bjA0gwi1q348BTzZBQnrzQ==, tableContent=null), ArticleFig(id=1243304984205439926, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=EN, label=Tab.1, caption=
Dimension parameters of geometric models
, figureFileSmall=null, figureFileBig=null, tableContent=
| 尺寸/m |
|---|
| l | l0 | l1 | l2 | l3 | h(b) | h1 | h2 | h3 | b1 | b2 |
|---|
| 简单方腔 | 1.6 | 0.4 | 0.36 | 0.32 | - | 0.225,0.6,1.2,无界 | 0.8 | 0.01 | - | 0.215 | 0.215 |
| 典型孔腔 | 5.6 | 2.7 | 0.6 | 0.05 | 0.42 | 0.6,无界 | 0.8,1.35,1.5 | 0.01 | 0.3,0.6,1.15,1.3 | 0.215 | 0.12 |
), ArticleFig(id=1243304984331269049, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=CN, label=表1, caption=
几何模型的尺寸参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 尺寸/m |
|---|
| l | l0 | l1 | l2 | l3 | h(b) | h1 | h2 | h3 | b1 | b2 |
|---|
| 简单方腔 | 1.6 | 0.4 | 0.36 | 0.32 | - | 0.225,0.6,1.2,无界 | 0.8 | 0.01 | - | 0.215 | 0.215 |
| 典型孔腔 | 5.6 | 2.7 | 0.6 | 0.05 | 0.42 | 0.6,无界 | 0.8,1.35,1.5 | 0.01 | 0.3,0.6,1.15,1.3 | 0.215 | 0.12 |
), ArticleFig(id=1243304984444515261, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=EN, label=Tab.2, caption=
Comparison of characteristic frequencies of flow modes between calculations and experiments
, figureFileSmall=null, figureFileBig=null, tableContent=
| 来流速度U | 6 m/s | 9 m/s | 12 m/s |
|---|
| 流动模态阶数n | 1 | 2 | 3 | 1 | 2 | 3 | 1 | 2 | 3 |
|---|
| 特征频率 | 计算值(Hz) | 11.0 | 18.0 | 26.0 | 14.0 | 22.0 | 38.0 | 20.0 | 40.0 | 58.0 |
| 实测值(Hz) | 10.0 | 18.0 | 24.0 | 15.0 | 25.0 | 43.0 | 21.0 | 39.0 | 57.0 |
| 相对误差(%) | 10.0 | 0.0 | 8.3 | 6.7 | 12.0 | 11.6 | 4.8 | 2.6 | 1.8 |
), ArticleFig(id=1243304984528401345, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304969537958393, language=CN, label=表2, caption=
数值模拟与实验测试的流动模态特征频率的对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 来流速度U | 6 m/s | 9 m/s | 12 m/s |
|---|
| 流动模态阶数n | 1 | 2 | 3 | 1 | 2 | 3 | 1 | 2 | 3 |
|---|
| 特征频率 | 计算值(Hz) | 11.0 | 18.0 | 26.0 | 14.0 | 22.0 | 38.0 | 20.0 | 40.0 | 58.0 |
| 实测值(Hz) | 10.0 | 18.0 | 24.0 | 15.0 | 25.0 | 43.0 | 21.0 | 39.0 | 57.0 |
| 相对误差(%) | 10.0 | 0.0 | 8.3 | 6.7 | 12.0 | 11.6 | 4.8 | 2.6 | 1.8 |
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