Large-eddy simulation of turbulent flow and structures in a square duct roughened with perpendicular and V-shaped ribs
In this paper, highly disturbed turbulent flows confined within a square duct with uniformly spaced V-shaped ribs mounted on one wall are investigated using large-eddy simulation (LES). Two V-shaped ( 6 0 ° and 4 5 ° ) rib cases are studied in comparison with the perpendicular ( 9 0 ° ) rib case. Th...
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| Veröffentlicht in: | Physics of fluids (1994) 2017-06, Vol.29 (6) |
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| container_title | Physics of fluids (1994) |
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| creator | Fang, Xingjun Yang, Zixuan Wang, Bing-Chen Tachie, Mark F. Bergstrom, Donald J. |
| description | In this paper, highly disturbed turbulent flows confined within a square duct with uniformly spaced V-shaped ribs mounted on one wall are investigated using large-eddy simulation (LES). Two V-shaped (
6
0
°
and
4
5
°
) rib cases are studied in comparison with the perpendicular (
9
0
°
) rib case. The LES results are validated against a set of water-channel measurement data newly acquired by the authors. The effects of different shaped ribs on turbulent flow are systematically studied in terms of the mean velocity field, turbulence statistics, and coherent structures. The results show that strong secondary flows in the pattern of a pair of large symmetrical streamwise-elongated vortices exist in all three rib cases. The impacts of rib geometry on turbulent coherent structures are investigated using vortex identifiers, temporal autocorrections, spatial two-point autocorrelations, and velocity spectra. |
| doi_str_mv | 10.1063/1.4985715 |
| format | Article |
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6
0
°
and
4
5
°
) rib cases are studied in comparison with the perpendicular (
9
0
°
) rib case. The LES results are validated against a set of water-channel measurement data newly acquired by the authors. The effects of different shaped ribs on turbulent flow are systematically studied in terms of the mean velocity field, turbulence statistics, and coherent structures. The results show that strong secondary flows in the pattern of a pair of large symmetrical streamwise-elongated vortices exist in all three rib cases. The impacts of rib geometry on turbulent coherent structures are investigated using vortex identifiers, temporal autocorrections, spatial two-point autocorrelations, and velocity spectra.</description><identifier>ISSN: 1070-6631</identifier><identifier>EISSN: 1089-7666</identifier><identifier>DOI: 10.1063/1.4985715</identifier><identifier>CODEN: PHFLE6</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Air flow ; Data acquisition ; Error correction ; Fluid dynamics ; Fluid flow ; Large eddy simulation ; Ribs (structural) ; Simulation ; Turbulence ; Turbulent flow ; Velocity distribution ; Vortices</subject><ispartof>Physics of fluids (1994), 2017-06, Vol.29 (6)</ispartof><rights>Author(s)</rights><rights>2017 Author(s). Published by AIP Publishing.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c292t-66dff5dd893853ec5733d0a30dc1fb55cda38295548367f8c607fe18db6e91153</citedby><cites>FETCH-LOGICAL-c292t-66dff5dd893853ec5733d0a30dc1fb55cda38295548367f8c607fe18db6e91153</cites><orcidid>0000-0002-7764-3595 ; 0000-0003-2005-7269</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,790,4498,27901,27902</link.rule.ids></links><search><creatorcontrib>Fang, Xingjun</creatorcontrib><creatorcontrib>Yang, Zixuan</creatorcontrib><creatorcontrib>Wang, Bing-Chen</creatorcontrib><creatorcontrib>Tachie, Mark F.</creatorcontrib><creatorcontrib>Bergstrom, Donald J.</creatorcontrib><title>Large-eddy simulation of turbulent flow and structures in a square duct roughened with perpendicular and V-shaped ribs</title><title>Physics of fluids (1994)</title><description>In this paper, highly disturbed turbulent flows confined within a square duct with uniformly spaced V-shaped ribs mounted on one wall are investigated using large-eddy simulation (LES). Two V-shaped (
6
0
°
and
4
5
°
) rib cases are studied in comparison with the perpendicular (
9
0
°
) rib case. The LES results are validated against a set of water-channel measurement data newly acquired by the authors. The effects of different shaped ribs on turbulent flow are systematically studied in terms of the mean velocity field, turbulence statistics, and coherent structures. The results show that strong secondary flows in the pattern of a pair of large symmetrical streamwise-elongated vortices exist in all three rib cases. The impacts of rib geometry on turbulent coherent structures are investigated using vortex identifiers, temporal autocorrections, spatial two-point autocorrelations, and velocity spectra.</description><subject>Air flow</subject><subject>Data acquisition</subject><subject>Error correction</subject><subject>Fluid dynamics</subject><subject>Fluid flow</subject><subject>Large eddy simulation</subject><subject>Ribs (structural)</subject><subject>Simulation</subject><subject>Turbulence</subject><subject>Turbulent flow</subject><subject>Velocity distribution</subject><subject>Vortices</subject><issn>1070-6631</issn><issn>1089-7666</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp9kElPwzAQhS0EEqVw4B9Y4gRSih3XS46oooBUiQtwjRwvras0Sb1Q9d_jLmdOM3rzzZvRA-AeowlGjDzjybQSlGN6AUYYiargjLHLQ89RwRjB1-AmhDVCiFQlG4HfhfRLUxit9zC4TWpldH0Hewtj8k1qTRehbfsdlJ2GIfqksm4CdB2UMGyT9AbqLELfp-XKdEbDnYsrOBg_mE47lR39cfmnCCs55Ll3TbgFV1a2wdyd6xh8z1-_Zu_F4vPtY_ayKFRZlTE_rK2lWouKCEqMopwQjSRBWmHbUKq0JKKsKJ0KwrgViiFuDRa6YabCmJIxeDj5Dr7fJhNive6T7_LJusSYZYTzMlOPJ0r5PgRvbD14t5F-X2NUH2KtcX2ONbNPJzYoF49h_QP_Aa1zeI8</recordid><startdate>201706</startdate><enddate>201706</enddate><creator>Fang, Xingjun</creator><creator>Yang, Zixuan</creator><creator>Wang, Bing-Chen</creator><creator>Tachie, Mark F.</creator><creator>Bergstrom, Donald J.</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-7764-3595</orcidid><orcidid>https://orcid.org/0000-0003-2005-7269</orcidid></search><sort><creationdate>201706</creationdate><title>Large-eddy simulation of turbulent flow and structures in a square duct roughened with perpendicular and V-shaped ribs</title><author>Fang, Xingjun ; Yang, Zixuan ; Wang, Bing-Chen ; Tachie, Mark F. ; Bergstrom, Donald J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c292t-66dff5dd893853ec5733d0a30dc1fb55cda38295548367f8c607fe18db6e91153</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Air flow</topic><topic>Data acquisition</topic><topic>Error correction</topic><topic>Fluid dynamics</topic><topic>Fluid flow</topic><topic>Large eddy simulation</topic><topic>Ribs (structural)</topic><topic>Simulation</topic><topic>Turbulence</topic><topic>Turbulent flow</topic><topic>Velocity distribution</topic><topic>Vortices</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fang, Xingjun</creatorcontrib><creatorcontrib>Yang, Zixuan</creatorcontrib><creatorcontrib>Wang, Bing-Chen</creatorcontrib><creatorcontrib>Tachie, Mark F.</creatorcontrib><creatorcontrib>Bergstrom, Donald J.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physics of fluids (1994)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fang, Xingjun</au><au>Yang, Zixuan</au><au>Wang, Bing-Chen</au><au>Tachie, Mark F.</au><au>Bergstrom, Donald J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Large-eddy simulation of turbulent flow and structures in a square duct roughened with perpendicular and V-shaped ribs</atitle><jtitle>Physics of fluids (1994)</jtitle><date>2017-06</date><risdate>2017</risdate><volume>29</volume><issue>6</issue><issn>1070-6631</issn><eissn>1089-7666</eissn><coden>PHFLE6</coden><abstract>In this paper, highly disturbed turbulent flows confined within a square duct with uniformly spaced V-shaped ribs mounted on one wall are investigated using large-eddy simulation (LES). Two V-shaped (
6
0
°
and
4
5
°
) rib cases are studied in comparison with the perpendicular (
9
0
°
) rib case. The LES results are validated against a set of water-channel measurement data newly acquired by the authors. The effects of different shaped ribs on turbulent flow are systematically studied in terms of the mean velocity field, turbulence statistics, and coherent structures. The results show that strong secondary flows in the pattern of a pair of large symmetrical streamwise-elongated vortices exist in all three rib cases. The impacts of rib geometry on turbulent coherent structures are investigated using vortex identifiers, temporal autocorrections, spatial two-point autocorrelations, and velocity spectra.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4985715</doi><tpages>17</tpages><orcidid>https://orcid.org/0000-0002-7764-3595</orcidid><orcidid>https://orcid.org/0000-0003-2005-7269</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1070-6631 |
| ispartof | Physics of fluids (1994), 2017-06, Vol.29 (6) |
| issn | 1070-6631 1089-7666 |
| language | eng |
| recordid | cdi_scitation_primary_10_1063_1_4985715 |
| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Air flow Data acquisition Error correction Fluid dynamics Fluid flow Large eddy simulation Ribs (structural) Simulation Turbulence Turbulent flow Velocity distribution Vortices |
| title | Large-eddy simulation of turbulent flow and structures in a square duct roughened with perpendicular and V-shaped ribs |
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