Article(id=1242150510896165458, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1242150509222634475, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2024.03.004, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1695398400000, receivedDateStr=2023-09-23, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1774081359838, onlineDateStr=2026-03-21, pubDate=1710864000000, pubDateStr=2024-03-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774081359838, onlineIssueDateStr=2026-03-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774081359838, creator=13701087609, updateTime=1774081359838, updator=13701087609, issue=Issue{id=1242150509222634475, tenantId=1146029695717560320, journalId=1240685776644648972, year='2024', volume='28', issue='3', pageStart='319', pageEnd='477', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1774081359439, creator=13701087609, updateTime=1774081618801, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1242151597120233485, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1242150509222634475, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1242151597120233486, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1242150509222634475, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=354, endPage=367, ext={EN=ArticleExt(id=1242150511110074963, articleId=1242150510896165458, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=Flow characteristics and mechanism of three cylinders in a triangular arrangement, columnId=1241023037940748650, journalTitle=Journal of Ship Mechanics, columnName=Hydrodynamics, runingTitle=null, highlight=null, articleAbstract=
Based on the immersed boundary-multiple relaxation-lattice Boltzmann method, a numerical simulation of the flow around three cylinders in equilateral triangle arrangement was conducted at Re=100, the influence of two key parameters, the spacing ratio (Kd) and incoming flow angle (α), on fluid force coefficient and flow field characteristics was analyzed, and several flow mechanisms were revealed. The calculation results show that the wake pattern in different flow fields is divided into single vortex, single vortex to double vortex, irregular double vortex, regular double vortex, double vortex to triple vortex, irregular triple vortex and regular triple vortex pattern, and that the downstream vortex street is more regular and the wake pattern changes faster at α=30°. The time-averaged fluid force coefficient of three cylinders is greatly affected by the gap flow velocity, and the changing trend with the spacing ratio (except for the small spacing ratio) at each incoming flow angle is nearly identical. The transition of the wake pattern will change the root mean square value of three cylinders’ fluid force coefficient significantly. When Kd≥3.5, the root mean square value of upstream cylinder’s fluid force coefficient fluctuates greatly. Except for α=0°, the vortex shedding frequency of the midstream cylinder is less affected by α and Kd when Kd≥2.5, which is relatively stable.
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基于浸没边界-多松弛-格子玻尔兹曼方法,对Re=100时等边三角形布置三圆柱体群绕流问题进行数值模拟,分析间距比(Kd)与来流角度(α)两个关键参数对流体力系数及流场特性的影响,揭示其流动机理。计算结果表明:不同流场下尾流模式分为单漩涡、单漩涡体向双漩涡过渡、不规则的双漩涡、规则的双漩涡、双漩涡向三漩涡过渡、不规则的三漩涡和规则的三漩涡模式,在α=30°时流场下游涡街更加规则,尾流模式转变更快。三圆柱所受的时均流体力系数受间隙流流速影响较大,各来流角度下随间距比(除小间距比外)的变化趋势基本一致,尾流模式转变会导致三圆柱群的流体力系数均方根值发生显著变化,在Kd≥3.5后上游圆柱流体力系数均方根值有较大起伏。除α=0°工况外,在Kd≥2.5后中游圆柱的涡脱落频率受α和Kd影响较小,数值相对稳定。
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Schematic diagram of fluid and solid boundary nodes, figureFileSmall=RVRFjokWuKQbz5GkhaQm/Q==, figureFileBig=FWRTeI6VOrdMc+kU3K0gfA==, tableContent=null), ArticleFig(id=1242150520081690631, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=CN, label=图1, caption=
流体和固体边界节点示意图, figureFileSmall=RVRFjokWuKQbz5GkhaQm/Q==, figureFileBig=FWRTeI6VOrdMc+kU3K0gfA==, tableContent=null), ArticleFig(id=1242150520303988759, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=EN, label=Fig.2, caption=
Schematic diagram of computational domain of flow around a single cylinder and the boundary conditions, figureFileSmall=U+60MGCylNxvGuHXzgkGEw==, figureFileBig=W2nxputIk9dpLK0e1iE8cQ==, tableContent=null), ArticleFig(id=1242150520387874847, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=CN, label=图2, caption=
单圆柱绕流计算域以及边界条件示意图, figureFileSmall=U+60MGCylNxvGuHXzgkGEw==, figureFileBig=W2nxputIk9dpLK0e1iE8cQ==, tableContent=null), ArticleFig(id=1242150520467566629, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=EN, label=Fig.3, caption=
Schematic diagram of the computational domain and boundary conditions for the flow around three cylinders in equilateral triangle arrangement, figureFileSmall=9oJkQs4cm1/RSSmgmceCQA==, figureFileBig=IWxtGheR6/usTkmfZnnF/w==, tableContent=null), ArticleFig(id=1242150520593395756, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=CN, label=图3, caption=
等边三角形布置三圆柱绕流计算域以及边界条件示意图, figureFileSmall=9oJkQs4cm1/RSSmgmceCQA==, figureFileBig=IWxtGheR6/usTkmfZnnF/w==, tableContent=null), ArticleFig(id=1242150520689864755, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=EN, label=Fig.4, caption=
Comparison of calculation results of fluid force coefficients of three cylinders in equilateral triangle arrangement, figureFileSmall=623Ci7QWiIOViqRU0sN5rQ==, figureFileBig=xFRPL+HWsXHH59wWjEB2Jg==, tableContent=null), ArticleFig(id=1242150520777945146, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=CN, label=图4, caption=
等边三角布置三圆柱群流体力系数计算结果对比, figureFileSmall=623Ci7QWiIOViqRU0sN5rQ==, figureFileBig=xFRPL+HWsXHH59wWjEB2Jg==, tableContent=null), ArticleFig(id=1242150520874414142, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=EN, label=Fig.5, caption=
Instantaneous vorticity diagram of the flow field for different wake patterns, figureFileSmall=cw0I/LTMp+/kIyTWSh0dpw==, figureFileBig=6zjIHi1lzhvOWsePPMlmxg==, tableContent=null), ArticleFig(id=1242150520954105918, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=CN, label=图5, caption=
不同尾流模式下流场瞬时涡量图, figureFileSmall=cw0I/LTMp+/kIyTWSh0dpw==, figureFileBig=6zjIHi1lzhvOWsePPMlmxg==, tableContent=null), ArticleFig(id=1242150521046380612, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=EN, label=Fig.6, caption=
Variation of time-averaged value of the drag coefficient for three-cylinder group with the spacing ratio in different incoming flow angles, figureFileSmall=wS2948n7Q4RYggCBkjYHiw==, figureFileBig=Bl025gi8uVFRSwjhHp1RtQ==, tableContent=null), ArticleFig(id=1242150521134461000, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=CN, label=图6, caption=
不同来流角度下三圆柱体群阻力系数平均值随间距比的变化, figureFileSmall=wS2948n7Q4RYggCBkjYHiw==, figureFileBig=Bl025gi8uVFRSwjhHp1RtQ==, tableContent=null), ArticleFig(id=1242150521235124299, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=EN, label=Fig.7, caption=
Variation of time-averaged value of the lift coefficient for three-cylinder group with the spacing ratio in different incoming flow angles, figureFileSmall=/aXihzCi+v4X8nzGibU1rw==, figureFileBig=AcqiijrFDncmLE9tJwPaxQ==, tableContent=null), ArticleFig(id=1242150521310621780, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=CN, label=图7, caption=
不同来流角度下三圆柱体群升力系数平均值随间距比的变化, figureFileSmall=/aXihzCi+v4X8nzGibU1rw==, figureFileBig=AcqiijrFDncmLE9tJwPaxQ==, tableContent=null), ArticleFig(id=1242150521419673691, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=EN, label=Fig.8, caption=
Time-averaged flow field characteristic diagram of three-cylinder group for ɑ=15°, Kd=4.0, figureFileSmall=dL3LolFSanLenl/OfId3hQ==, figureFileBig=6QfEjloXslzoJ7Y7TS7jlg==, tableContent=null), ArticleFig(id=1242150521570668640, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=CN, label=图8, caption=
ɑ=15°,Kd=4.0工况下三圆柱体群时均流场特性图, figureFileSmall=dL3LolFSanLenl/OfId3hQ==, figureFileBig=6QfEjloXslzoJ7Y7TS7jlg==, tableContent=null), ArticleFig(id=1242150521671331938, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=EN, label=Fig.9, caption=
Time-averaged streamline and pressure diagram of three-cylinder group at different cases, figureFileSmall=KIggruoUhs/0/YyY4jER9Q==, figureFileBig=QJ/YrLACKnAo66ipfRrGzA==, tableContent=null), ArticleFig(id=1242150521776189546, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=CN, label=图9, caption=
不同工况下三圆柱体群时均流线和压力图, figureFileSmall=KIggruoUhs/0/YyY4jER9Q==, figureFileBig=QJ/YrLACKnAo66ipfRrGzA==, tableContent=null), ArticleFig(id=1242150521843298413, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=EN, label=Fig.10, caption=
Time-averaged flow field characteristic diagram of three-cylinder group for α=45°, Kd=4.0, figureFileSmall=tyBlrVMa3h3wtM9c8pg9vA==, figureFileBig=DvLvfx0JuInx3bLseCOH6A==, tableContent=null), ArticleFig(id=1242150521943961712, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=CN, label=图10, caption=
α=45°,Kd=4.0工况下三圆柱体群时均流场特性图, figureFileSmall=tyBlrVMa3h3wtM9c8pg9vA==, figureFileBig=DvLvfx0JuInx3bLseCOH6A==, tableContent=null), ArticleFig(id=1242150522019459188, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=EN, label=Fig.11, caption=
Variation of root mean square value of the drag coefficient for three-cylinder group with the spacing ratio in different incoming flow angles, figureFileSmall=TC7H6eNhnBEW5bZsVZFgCA==, figureFileBig=DcOI2wtHuK7+bopBsEdL9g==, tableContent=null), ArticleFig(id=1242150522136899706, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=CN, label=图11, caption=
不同来流角度下三圆柱体群阻力系数均方根值随间距比的变化, figureFileSmall=TC7H6eNhnBEW5bZsVZFgCA==, figureFileBig=DcOI2wtHuK7+bopBsEdL9g==, tableContent=null), ArticleFig(id=1242150522229174397, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=EN, label=Fig.12, caption=
Variation of root mean square value of the lift coefficient for three-cylinder group with the spacing ratio in different incoming flow angles, figureFileSmall=NbpC2K71OqWhVqErcN01XA==, figureFileBig=y3lJQO3fuk1nB11VkV6e2w==, tableContent=null), ArticleFig(id=1242150522350809215, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=CN, label=图12, caption=
不同来流角度下三圆柱体群升力系数均方根值随间距比的变化, figureFileSmall=NbpC2K71OqWhVqErcN01XA==, figureFileBig=y3lJQO3fuk1nB11VkV6e2w==, tableContent=null), ArticleFig(id=1242150522447278212, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=EN, label=Fig.13, caption=
Instantaneous vorticity diagrams of the flow field at different cases, figureFileSmall=X8i7DjkYrIMpcBELe5BU0w==, figureFileBig=6XiWWiBDP+2TpCATymfWKw==, tableContent=null), ArticleFig(id=1242150524003365000, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=CN, label=图13, caption=
不同工况下的流场瞬时涡量图, figureFileSmall=X8i7DjkYrIMpcBELe5BU0w==, figureFileBig=6XiWWiBDP+2TpCATymfWKw==, tableContent=null), ArticleFig(id=1242150524133388430, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=EN, label=Fig.14, caption=
Phase diagram of CD and CL for C2 at different cases, figureFileSmall=sE0NU01+oNoUalmF3od+TA==, figureFileBig=SONySNebwC8ZwQZB1Zt3Fg==, tableContent=null), ArticleFig(id=1242150524234051730, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=CN, label=图14, caption=
不同工况下C2的CD、CL相位图, figureFileSmall=sE0NU01+oNoUalmF3od+TA==, figureFileBig=SONySNebwC8ZwQZB1Zt3Fg==, tableContent=null), ArticleFig(id=1242150524347297945, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=EN, label=Fig.15, caption=
Variation of the Strouhal number for three-cylinder group with the spacing ratio at different cases, figureFileSmall=qvGRDqNrbyvXvlGN2ot4OA==, figureFileBig=pLpXLNcAG40GM6DUOjBDXw==, tableContent=null), ArticleFig(id=1242150524435378334, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=CN, label=图15, caption=
不同工况下三圆柱群斯托罗哈数随间距比的变化情况, figureFileSmall=qvGRDqNrbyvXvlGN2ot4OA==, figureFileBig=pLpXLNcAG40GM6DUOjBDXw==, tableContent=null), ArticleFig(id=1242150524506681506, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=EN, label=Fig.16, caption=
PSD diagram for three-cylinder group at different cases, figureFileSmall=AjBHT8R1NlC77ah7Bgaqhg==, figureFileBig=glzSkUWHB3wYqEHzhE2Snw==, tableContent=null), ArticleFig(id=1242150524594761894, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=CN, label=图16, caption=
不同工况下的三圆柱结构能量谱密度图, figureFileSmall=AjBHT8R1NlC77ah7Bgaqhg==, figureFileBig=glzSkUWHB3wYqEHzhE2Snw==, tableContent=null), ArticleFig(id=1242150524670259369, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=EN, label=Tab.1, caption=
Grid resolution verification
, figureFileSmall=null, figureFileBig=null, tableContent=
| 单位D包含格子数 | 格子总数 | CD-mean | CL-rms | St |
|---|
| 20 | 881 901 | 1.403 | 0.210 | 0.165 |
| (0.43%) | (8.70%) | (2.94%) |
| 30 | 1 982 851 | 1.398 | 0.223 | 0.169 |
| (0.07%) | (3.04%) | (0.59%) |
| 40 | 3 523 801 | 1.397 | 0.230 | 0.170 |
| 文献[19] | 787 191 | 1.438 | 0.233 | 0.167 |
| 文献[20] | 8 100 000 | 1.420 | / | 0.168 |
), ArticleFig(id=1242150524749951150, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=CN, label=表1, caption=
网格分辨率验证
, figureFileSmall=null, figureFileBig=null, tableContent=
| 单位D包含格子数 | 格子总数 | CD-mean | CL-rms | St |
|---|
| 20 | 881 901 | 1.403 | 0.210 | 0.165 |
| (0.43%) | (8.70%) | (2.94%) |
| 30 | 1 982 851 | 1.398 | 0.223 | 0.169 |
| (0.07%) | (3.04%) | (0.59%) |
| 40 | 3 523 801 | 1.397 | 0.230 | 0.170 |
| 文献[19] | 787 191 | 1.438 | 0.233 | 0.167 |
| 文献[20] | 8 100 000 | 1.420 | / | 0.168 |
), ArticleFig(id=1242150524875780273, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=EN, label=Tab.2, caption=
Wake pattern distribution of three-cylinder group at different cases
, figureFileSmall=null, figureFileBig=null, tableContent=
| Kd | 1.2 | 1.5 | 2.0 | 3.0 | 3.5 | 4.0 | 4.5 | 5.5 |
|---|
| α=0° | SV | SV-DV | RDV | IDV | DV-TV | ITV | ITV | RTV |
| α=15° | SV | SV-DV | IDV | IDV | DV-TV | ITV | ITV | RTV |
| α=30° | SV | SV-DV | IDV | DV-TV | ITV | RTV | RTV | RTV |
| α=45° | SV | SV-DV | IDV | IDV | IDV | DV-TV | ITV | RTV |
| α=60° | SV | SV-DV | IDV | RDV | IDV | DV-TV | RTV | RTV |
), ArticleFig(id=1242150524942889141, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150510896165458, language=CN, label=表2, caption=
各工况下三圆柱群尾流模式分布
, figureFileSmall=null, figureFileBig=null, tableContent=
| Kd | 1.2 | 1.5 | 2.0 | 3.0 | 3.5 | 4.0 | 4.5 | 5.5 |
|---|
| α=0° | SV | SV-DV | RDV | IDV | DV-TV | ITV | ITV | RTV |
| α=15° | SV | SV-DV | IDV | IDV | DV-TV | ITV | ITV | RTV |
| α=30° | SV | SV-DV | IDV | DV-TV | ITV | RTV | RTV | RTV |
| α=45° | SV | SV-DV | IDV | IDV | IDV | DV-TV | ITV | RTV |
| α=60° | SV | SV-DV | IDV | RDV | IDV | DV-TV | RTV | RTV |
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