Article(id=1241023038943187315, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1241023036892172648, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2025.11.013, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1747152000000, receivedDateStr=2025-05-14, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773812549576, onlineDateStr=2026-03-18, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773812549576, onlineIssueDateStr=2026-03-18, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773812549576, creator=13701087609, updateTime=1773812549576, updator=13701087609, issue=Issue{id=1241023036892172648, tenantId=1146029695717560320, journalId=1240685776644648972, year='2025', volume='29', issue='11', pageStart='1663', pageEnd='1826', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1773812549088, creator=13701087609, updateTime=1773812775651, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241023987245970093, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1241023036892172648, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241023987245970094, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1241023036892172648, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1805, endPage=1817, ext={EN=ArticleExt(id=1241023039169679732, articleId=1241023038943187315, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=Influence of fillets at the leading and trailing edges of the flow hole on the noise of submerged body, columnId=1241023038381158513, journalTitle=Journal of Ship Mechanics, columnName=Hydro/Structural Acoustics, runingTitle=null, highlight=null, articleAbstract=
In order to investigate the effect of fillets at the leading and trailing edges of flow holes on the noise characteristics of submerged body, a submerged body with a single flow hole was taken as the research object. Based on the large eddy simulation turbulence model and FW-H (Ffowcs Williams-Hawkings) acoustic model, numerical simulations were carried out using STAR CCM+ software. After verifying that the simulation accuracy meets the requirements, the influence of different fillet positions and radii of the orifice on flow noise was then deeply explored at a flow rate of 10 m/s. The results show that the treatment of fillets at the leading and trailing edges of the flow hole can reduce the flow noise of the flow hole, especially the second-order line-spectrum noise. Regarding fillet position, the noise reduction amplitude by the fillets at the trailing edges is greater than that at the leading edge, and the noise reduction amplitude at the outer rounded corners is greater than that at the inner edge. In the studied operating conditions, when the outer edges of the leading and trailing edges of the orifice are simultaneously rounded with a radius of 10 mm, the minimum second-order line-spectrum noise is 94.03 dB, which is 9.48 dB lower than that in the reference operating condition, and the corresponding frequency is reduced by 4.72 Hz. The far-field radiation noise of the orifice is mainly affected by the pressure pulsation on the back wall and bottom of the orifice, and the influence of the orifice shear layer oscillation is relatively small. The research conclusions provide guidance for the optimization of submerged body flow hole structure and the low-noise design.
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为探究孔口前、后缘圆角处理对潜体流水孔流噪声特性的影响,本文以带单个流水孔的潜体为研究对象,基于大涡模拟湍流模型和FW-H(Ffowcs Williams-Hawkings)声学模型,利用STAR CCM+软件开展数值模拟,在验证仿真精度满足要求的基础上,深入探究在流速10 m/s下孔口不同圆角位置和圆角半径对流噪声的影响。结果表明:孔口前、后缘圆角处理,可降低流水孔的流噪声,尤其是二阶线谱噪声,从圆角位置来看,后缘圆角的降噪幅度均大于前缘圆角,外侧圆角的降噪幅度均大于内侧;在所研究的工况中,当孔口前缘和后缘外侧同时进行圆角处理,且圆角半径为10 mm时,其二阶线谱噪声最小为94.03 dB,相比于基准工况,降低了9.48 dB,且对应频率降低了4.72 Hz;孔口远场辐射噪声主要受孔腔后壁和腔底压力脉动的影响,孔口剪切层振荡对其影响相对较小。研究结论对潜体流水孔结构优化及低噪声设计具有一定的指导意义。
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彭利坤(1975-),男,教授,博士生导师,通讯作者,E-mail:pelik@163.com。
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Computational domain model of validation experiments, figureFileSmall=PbO9JTAUc+nrn2yuumtfWQ==, figureFileBig=bTMD5aGTrI5pCWG5DVPqzg==, tableContent=null), ArticleFig(id=1241766174694900155, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图1, caption=
验证实验计算域模型, figureFileSmall=PbO9JTAUc+nrn2yuumtfWQ==, figureFileBig=bTMD5aGTrI5pCWG5DVPqzg==, tableContent=null), ArticleFig(id=1241766174803952060, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.2, caption=
Computational domain grid of validation experiment, figureFileSmall=99/4JvZmqHu4lzHB1qab2A==, figureFileBig=o+IFLW0IlPZYkMLA89ltnQ==, tableContent=null), ArticleFig(id=1241766174875255229, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图2, caption=
验证实验计算域网格, figureFileSmall=99/4JvZmqHu4lzHB1qab2A==, figureFileBig=o+IFLW0IlPZYkMLA89ltnQ==, tableContent=null), ArticleFig(id=1241766174938169790, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.3, caption=
Comparison of simulation and experimental results, figureFileSmall=DGxcTFpCNbmq6DJG7KxYNA==, figureFileBig=6bQbkT8k/AUvETT9MiPU+A==, tableContent=null), ArticleFig(id=1241766175017861567, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图3, caption=
仿真与实验结果对比图, figureFileSmall=DGxcTFpCNbmq6DJG7KxYNA==, figureFileBig=6bQbkT8k/AUvETT9MiPU+A==, tableContent=null), ArticleFig(id=1241766175084970432, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.4, caption=
Schematic diagram of the submerged body model, figureFileSmall=iujWKKYA7lig7MRJMfwExQ==, figureFileBig=/E9TD+olLqvhUtVkc8cFqQ==, tableContent=null), ArticleFig(id=1241766175189828033, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图4, caption=
潜体模型示意图, figureFileSmall=iujWKKYA7lig7MRJMfwExQ==, figureFileBig=/E9TD+olLqvhUtVkc8cFqQ==, tableContent=null), ArticleFig(id=1241766175277908418, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.5, caption=
Side view of computational domain, figureFileSmall=cRHt4g7Tc180DhQS2ZKbpw==, figureFileBig=YsFop3jrnu9d86tRw8aVGA==, tableContent=null), ArticleFig(id=1241766175349211587, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图5, caption=
计算域侧视图, figureFileSmall=cRHt4g7Tc180DhQS2ZKbpw==, figureFileBig=YsFop3jrnu9d86tRw8aVGA==, tableContent=null), ArticleFig(id=1241766175433097668, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.6, caption=
Top view of computational domain, figureFileSmall=yiTumUGGKEiQGmKn3g1oYw==, figureFileBig=2GCb/HuxT/D8ZvKZqeoiww==, tableContent=null), ArticleFig(id=1241766175504400837, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图6, caption=
计算域俯视图, figureFileSmall=yiTumUGGKEiQGmKn3g1oYw==, figureFileBig=2GCb/HuxT/D8ZvKZqeoiww==, tableContent=null), ArticleFig(id=1241766175579898310, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.7, caption=
Overall meshing, figureFileSmall=ZHEzHNOdcA2yXi+D8O3GIA==, figureFileBig=1ueDLZqdrYlMy5kYfjqMnw==, tableContent=null), ArticleFig(id=1241766177064681927, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图7, caption=
整体网格划分情况, figureFileSmall=ZHEzHNOdcA2yXi+D8O3GIA==, figureFileBig=1ueDLZqdrYlMy5kYfjqMnw==, tableContent=null), ArticleFig(id=1241766177152762312, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.8, caption=
Refinement of flow hole grid, figureFileSmall=TW+znUSV3CpTFUMt1SylMA==, figureFileBig=mix/RVf5U/qzCM0m76TkZA==, tableContent=null), ArticleFig(id=1241766177266008521, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图8, caption=
流水孔网格加密情况, figureFileSmall=TW+znUSV3CpTFUMt1SylMA==, figureFileBig=mix/RVf5U/qzCM0m76TkZA==, tableContent=null), ArticleFig(id=1241766177345700298, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.9, caption=
Total resistance under different mesh numbers, figureFileSmall=5F1iMCVFof42H4xkAQ3iXA==, figureFileBig=rWd4GAx5BieS3mVvr/tH3A==, tableContent=null), ArticleFig(id=1241766177446363595, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图9, caption=
不同网格数量下的总阻力, figureFileSmall=5F1iMCVFof42H4xkAQ3iXA==, figureFileBig=rWd4GAx5BieS3mVvr/tH3A==, tableContent=null), ArticleFig(id=1241766177526055372, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.10, caption=
Spectrum of flow noise under different mesh sizes, figureFileSmall=i5IDUfRk7l+jSJwECjo+dg==, figureFileBig=ZvpMAJXdD3lemYLTUbf9RQ==, tableContent=null), ArticleFig(id=1241766177609941453, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图10, caption=
不同网格尺寸下的流噪声频谱图, figureFileSmall=i5IDUfRk7l+jSJwECjo+dg==, figureFileBig=ZvpMAJXdD3lemYLTUbf9RQ==, tableContent=null), ArticleFig(id=1241766177693827534, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.11, caption=
Schematic diagram of the fillet at the leading and trailing edges of flow hole, figureFileSmall=gt+Cd5VSG3J0/9gcepV4bw==, figureFileBig=W3OsYDO/x4MfbEMFhigOQw==, tableContent=null), ArticleFig(id=1241766177773519311, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图11, caption=
前缘和后缘圆角示意图, figureFileSmall=gt+Cd5VSG3J0/9gcepV4bw==, figureFileBig=W3OsYDO/x4MfbEMFhigOQw==, tableContent=null), ArticleFig(id=1241766177874182608, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.12, caption=
Far-field noise spectrum on the inner side of the leading edge of the orifice with different fillet radii, figureFileSmall=xoGd9tdBBC5Axj1mFdOJfw==, figureFileBig=y23+PYjtro+XSjB2StEl3A==, tableContent=null), ArticleFig(id=1241766177953874385, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图12, caption=
孔口前缘内侧不同圆角半径下的远场噪声频谱图, figureFileSmall=xoGd9tdBBC5Axj1mFdOJfw==, figureFileBig=y23+PYjtro+XSjB2StEl3A==, tableContent=null), ArticleFig(id=1241766178037760466, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.13, caption=
Far-field noise spectrum on the outer side of the leading edge of the orifice with different fillet radii, figureFileSmall=f0DjELvv0XVTzUOLKC48xg==, figureFileBig=cGZxlk9+gB9Vf4DVXom1vA==, tableContent=null), ArticleFig(id=1241766178130035155, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图13, caption=
孔口前缘外侧不同圆角半径下的远场噪声频谱图, figureFileSmall=f0DjELvv0XVTzUOLKC48xg==, figureFileBig=cGZxlk9+gB9Vf4DVXom1vA==, tableContent=null), ArticleFig(id=1241766178205532628, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.14, caption=
Far-field noise spectrum on the inner side of the trailing edge of the orifice with different fillet radii, figureFileSmall=svVkOu2tObrSTg/iDBtBAQ==, figureFileBig=Zb6QOYfQW7Tb43yjm6KfBA==, tableContent=null), ArticleFig(id=1241766178281030101, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图14, caption=
孔口后缘内侧不同圆角半径下的远场噪声频谱图, figureFileSmall=svVkOu2tObrSTg/iDBtBAQ==, figureFileBig=Zb6QOYfQW7Tb43yjm6KfBA==, tableContent=null), ArticleFig(id=1241766178385887702, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.15, caption=
Far-field noise spectrum on the outer side of the trailing edge of the orifice with different fillet radii, figureFileSmall=8iNerqHSx3cfIOjKBk/lEQ==, figureFileBig=cOytvKToy7NMjt+gPExL1w==, tableContent=null), ArticleFig(id=1241766178465579479, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图15, caption=
孔口后缘外侧不同圆角半径下的远场噪声频谱图, figureFileSmall=8iNerqHSx3cfIOjKBk/lEQ==, figureFileBig=cOytvKToy7NMjt+gPExL1w==, tableContent=null), ArticleFig(id=1241766178545271256, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.16, caption=
Far-field noise spectrum on the outer side of the leading and trailing edges of the orifice with different fillet radii, figureFileSmall=JwnH1YAjGu4wBY6xcjcB7Q==, figureFileBig=9wyE+7S69ifpofXdfx5Abw==, tableContent=null), ArticleFig(id=1241766178629157337, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图16, caption=
孔口前缘和后缘外侧不同圆角半径下的远场噪声频谱图, figureFileSmall=JwnH1YAjGu4wBY6xcjcB7Q==, figureFileBig=9wyE+7S69ifpofXdfx5Abw==, tableContent=null), ArticleFig(id=1241766178717237722, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.17, caption=
Near-field noise spectrum at the center position of the orifice under different fillet radii at the leading and trailing edges of the orifice, figureFileSmall=z5hoJlP4Y22J5vVRqRuddg==, figureFileBig=UtkYJuzImxOZl50N3Tk7oA==, tableContent=null), ArticleFig(id=1241766178801123803, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图17, caption=
孔口前缘和后缘不同圆角半径下的孔口中心位置近场噪声频谱图, figureFileSmall=z5hoJlP4Y22J5vVRqRuddg==, figureFileBig=UtkYJuzImxOZl50N3Tk7oA==, tableContent=null), ArticleFig(id=1241766178897592796, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.18, caption=
Near-field noise spectrum at the center position of the cavity bottom under different fillet radii at the leading and trailing edges of the orifice, figureFileSmall=VvUY7wrmoqP2Cfx+YnVCJA==, figureFileBig=uvVwQY/d+Yyig3dzeQrjGQ==, tableContent=null), ArticleFig(id=1241766179002450397, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图18, caption=
孔口前缘和后缘不同圆角半径下的腔底中心位置近场噪声频谱图, figureFileSmall=VvUY7wrmoqP2Cfx+YnVCJA==, figureFileBig=uvVwQY/d+Yyig3dzeQrjGQ==, tableContent=null), ArticleFig(id=1241766179077947870, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.19, caption=
Distribution of velocity scalar and vector at different fillet positions of the orifice, figureFileSmall=REmT3KZ55qQq+hqkR2BgqQ==, figureFileBig=lm1/jTvItolLyI7Cb9mIDQ==, tableContent=null), ArticleFig(id=1241766179182805471, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图19, caption=
孔口不同圆角位置下的速度标量和矢量分布图, figureFileSmall=REmT3KZ55qQq+hqkR2BgqQ==, figureFileBig=lm1/jTvItolLyI7Cb9mIDQ==, tableContent=null), ArticleFig(id=1241766179291857376, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Fig.20, caption=
Distribution of velocity scalar and vector of the orifice with both the leading and trailing edges rounded at different fillet radii, figureFileSmall=60u26NrNzN5k0a61nYqlgQ==, figureFileBig=O4F9MomCZJ62kmJ3ksiTFQ==, tableContent=null), ArticleFig(id=1241766179371549153, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=图20, caption=
孔口前、后缘不同圆角半径下的速度标量和矢量分布图, figureFileSmall=60u26NrNzN5k0a61nYqlgQ==, figureFileBig=O4F9MomCZJ62kmJ3ksiTFQ==, tableContent=null), ArticleFig(id=1241766179442852322, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Tab.1, caption=
Comparison of results of different research methods
, figureFileSmall=null, figureFileBig=null, tableContent=
| 求解方法 |  | P2 /dB |  | P4 /dB |
|---|
| 半经验公式 | 1206 | — | 2503 | — |
| 模型试验 | 1199.5 | 124.3 | 2397.5 | 88.2 |
| 仿真实验 | 1106.0 | 122.9 | 2216.8 | 79.2 |
| 相对误差 | 7.8% | 1.1% | 7.5% | 10.2% |
), ArticleFig(id=1241766179501572579, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=表1, caption=
不同研究方法结果比较
, figureFileSmall=null, figureFileBig=null, tableContent=
| 求解方法 |  | P2 /dB |  | P4 /dB |
|---|
| 半经验公式 | 1206 | — | 2503 | — |
| 模型试验 | 1199.5 | 124.3 | 2397.5 | 88.2 |
| 仿真实验 | 1106.0 | 122.9 | 2216.8 | 79.2 |
| 相对误差 | 7.8% | 1.1% | 7.5% | 10.2% |
), ArticleFig(id=1241766179572875748, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Tab.2, caption=
Mesh size and quantity
, figureFileSmall=null, figureFileBig=null, tableContent=
| 网格尺寸/m | 0.4 | 0.2828 | 0.2 | 0.1414 | 0.1 |
|---|
| 网格数量/万 | 19.6 | 33.8 | 66.2 | 143.5 | 281.8 |
), ArticleFig(id=1241766179648373221, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=表2, caption=
网格尺寸及数量
, figureFileSmall=null, figureFileBig=null, tableContent=
| 网格尺寸/m | 0.4 | 0.2828 | 0.2 | 0.1414 | 0.1 |
|---|
| 网格数量/万 | 19.6 | 33.8 | 66.2 | 143.5 | 281.8 |
), ArticleFig(id=1241766179744842214, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Tab.3, caption=
Simulation conditions
, figureFileSmall=null, figureFileBig=null, tableContent=
| 工况 | 前缘内侧圆角半径/mm | 前缘外侧圆角半径/mm | 后缘内侧圆角半径/mm | 后缘外侧圆角半径/mm |
|---|
| 1 | 0 | 0 | 0 | 0 |
| 2 | 2.5 | 0 | 0 | 0 |
| 3 | 5.0 | 0 | 0 | 0 |
| 4 | 7.5 | 0 | 0 | 0 |
| 5 | 10.0 | 0 | 0 | 0 |
| 6 | 0 | 2.5 | 0 | 0 |
| 7 | 0 | 5.0 | 0 | 0 |
| 8 | 0 | 7.5 | 0 | 0 |
| 9 | 0 | 10.0 | 0 | 0 |
| 10 | 0 | 0 | 2.5 | 0 |
| 11 | 0 | 0 | 5.0 | 0 |
| 12 | 0 | 0 | 7.5 | 0 |
| 13 | 0 | 0 | 10.0 | 0 |
| 14 | 0 | 0 | 0 | 2.5 |
| 15 | 0 | 0 | 0 | 5.0 |
| 16 | 0 | 0 | 0 | 7.5 |
| 17 | 0 | 0 | 0 | 10.0 |
| 18 | 2.5 | 0 | 0 | 2.5 |
| 19 | 5.0 | 0 | 0 | 5.0 |
| 20 | 7.5 | 0 | 0 | 7.5 |
| 21 | 10.0 | 0 | 0 | 10.0 |
), ArticleFig(id=1241766179824533991, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=表3, caption=
仿真工况
, figureFileSmall=null, figureFileBig=null, tableContent=
| 工况 | 前缘内侧圆角半径/mm | 前缘外侧圆角半径/mm | 后缘内侧圆角半径/mm | 后缘外侧圆角半径/mm |
|---|
| 1 | 0 | 0 | 0 | 0 |
| 2 | 2.5 | 0 | 0 | 0 |
| 3 | 5.0 | 0 | 0 | 0 |
| 4 | 7.5 | 0 | 0 | 0 |
| 5 | 10.0 | 0 | 0 | 0 |
| 6 | 0 | 2.5 | 0 | 0 |
| 7 | 0 | 5.0 | 0 | 0 |
| 8 | 0 | 7.5 | 0 | 0 |
| 9 | 0 | 10.0 | 0 | 0 |
| 10 | 0 | 0 | 2.5 | 0 |
| 11 | 0 | 0 | 5.0 | 0 |
| 12 | 0 | 0 | 7.5 | 0 |
| 13 | 0 | 0 | 10.0 | 0 |
| 14 | 0 | 0 | 0 | 2.5 |
| 15 | 0 | 0 | 0 | 5.0 |
| 16 | 0 | 0 | 0 | 7.5 |
| 17 | 0 | 0 | 0 | 10.0 |
| 18 | 2.5 | 0 | 0 | 2.5 |
| 19 | 5.0 | 0 | 0 | 5.0 |
| 20 | 7.5 | 0 | 0 | 7.5 |
| 21 | 10.0 | 0 | 0 | 10.0 |
), ArticleFig(id=1241766179900031464, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Tab.4, caption=
Far-field second-order line spectral noise for different fillet positions and radii
, figureFileSmall=null, figureFileBig=null, tableContent=
| 圆角半径/mm | 圆角位置 |
|---|
| 前缘内侧 | 前缘外侧 | 后缘内侧 | 后缘外侧 | 前-后缘外侧 |
|---|
| 0 | 103.51 | 103.51 | 103.51 | 103.51 | 103.51 |
| 2.5 | 101.33 | 100.67 | 101.13 | 98.74 | 99.10 |
| 5.0 | 102.58 | 102.53 | 102.25 | 96.43 | 98.00 |
| 7.5 | 100.84 | 97.36 | 97.31 | 98.62 | 98.96 |
| 10.0 | 102.99 | 96.86 | 102.12 | 96.92 | 94.03 |
), ArticleFig(id=1241766179971334633, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=表4, caption=
不同圆角位置及圆角半径下的远场二阶线谱噪声(单位:dB)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 圆角半径/mm | 圆角位置 |
|---|
| 前缘内侧 | 前缘外侧 | 后缘内侧 | 后缘外侧 | 前-后缘外侧 |
|---|
| 0 | 103.51 | 103.51 | 103.51 | 103.51 | 103.51 |
| 2.5 | 101.33 | 100.67 | 101.13 | 98.74 | 99.10 |
| 5.0 | 102.58 | 102.53 | 102.25 | 96.43 | 98.00 |
| 7.5 | 100.84 | 97.36 | 97.31 | 98.62 | 98.96 |
| 10.0 | 102.99 | 96.86 | 102.12 | 96.92 | 94.03 |
), ArticleFig(id=1241766180046832106, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=EN, label=Tab.5, caption=
Near field second-order line spectral noise at different monitoring points for different fillet radii
, figureFileSmall=null, figureFileBig=null, tableContent=
| 监测点位置 | 外侧圆角半径/mm |
|---|
| 0 | 2.5 | 5.0 | 7.5 | 10 |
|---|
| 孔口中心 | 154.84 | 154.30 | 156.22 | 157.53 | 154.04 |
| 腔底中心 | 157.48 | 154.66 | 154.16 | 156.23 | 149.9 |
), ArticleFig(id=1241766181544198635, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038943187315, language=CN, label=表5, caption=
不同监测点位置及圆角半径下的近场二阶线谱噪声(单位:dB)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 监测点位置 | 外侧圆角半径/mm |
|---|
| 0 | 2.5 | 5.0 | 7.5 | 10 |
|---|
| 孔口中心 | 154.84 | 154.30 | 156.22 | 157.53 | 154.04 |
| 腔底中心 | 157.48 | 154.66 | 154.16 | 156.23 | 149.9 |
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