Passive Control of Vortex Shedding via Screen Shroud
The turbulent wake of screen-shrouded cylinders were experimentally investigated using flow visualization. Screen cylinders made from screen mesh of various porosity (37%, 49%, 61% and 67%) were used as the shrouds. The main purpose of the study is to examine the effect of screen porosity, β and scr...
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| Veröffentlicht in: | IOP conference series. Materials Science and Engineering 2017-12, Vol.280 (1), p.12028 |
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| creator | Azmi, A M Zhou, T. |
| description | The turbulent wake of screen-shrouded cylinders were experimentally investigated using flow visualization. Screen cylinders made from screen mesh of various porosity (37%, 49%, 61% and 67%) were used as the shrouds. The main purpose of the study is to examine the effect of screen porosity, β and screen diameter ratio, dw/D (wire diameter to cylinder diameter ratio) on the vortex development behind the shrouded cylinders, particularly in supressing the vortex shedding from a circular cylinder. The diameter ratio between the screen shroud and the plain cylinder, D/d was 2.0. The flow Reynolds number based on the shroud diameter, ReD was about 1000. Results showed that the inclusion of the screen shrouds has significant impact on the wake of the circular cylinder. With larger value of the non-dimensional parameter βdw/D, vortex was impaired and the formation length was longer in the shrouded cylinder wake. The vortex generation mechanism was also discussed. |
| doi_str_mv | 10.1088/1757-899X/280/1/012028 |
| format | Article |
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Screen cylinders made from screen mesh of various porosity (37%, 49%, 61% and 67%) were used as the shrouds. The main purpose of the study is to examine the effect of screen porosity, β and screen diameter ratio, dw/D (wire diameter to cylinder diameter ratio) on the vortex development behind the shrouded cylinders, particularly in supressing the vortex shedding from a circular cylinder. The diameter ratio between the screen shroud and the plain cylinder, D/d was 2.0. The flow Reynolds number based on the shroud diameter, ReD was about 1000. Results showed that the inclusion of the screen shrouds has significant impact on the wake of the circular cylinder. With larger value of the non-dimensional parameter βdw/D, vortex was impaired and the formation length was longer in the shrouded cylinder wake. 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The vortex generation mechanism was also discussed.</description><subject>Circular cylinders</subject><subject>Diameters</subject><subject>Flow visualization</subject><subject>Fluid dynamics</subject><subject>Fluid flow</subject><subject>Passive control</subject><subject>Porosity</subject><subject>Reynolds number</subject><subject>Shrouds</subject><subject>Turbulent flow</subject><subject>Vortex shedding</subject><subject>Vortices</subject><issn>1757-8981</issn><issn>1757-899X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>O3W</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNqFkE9LxDAQxYMouK5-BSl48VKbmaTb5CiL_2BFYVW8hbRJtMva1KS76Le3S2VFEDzNMPObN7xHyDHQM6BCZFDkRSqkfM5Q0AwyCkhR7JDRdrG77QXsk4MYF5ROCs7piPB7HWO9tsnUN13wy8S75MmHzn4k81drTN28JOtaJ_MqWNv0s-BX5pDsOb2M9ui7jsnj5cXD9Dqd3V3dTM9nacVy3qUCNQo0jqEsDYCsrCmlMLbkJdUFVBKYybFk1gLPWSkM1dQxicjRVY4XbExOBt02-PeVjZ1a-FVo-pcK83zCJRMCe2oyUFXwMQbrVBvqNx0-FVC1SUhtzKtNEKpPSIEaEuoPT4fD2rc_yrfzi1-YansHY4J_oP_ofwHiknRG</recordid><startdate>20171201</startdate><enddate>20171201</enddate><creator>Azmi, A M</creator><creator>Zhou, T.</creator><general>IOP Publishing</general><scope>O3W</scope><scope>TSCCA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>L6V</scope><scope>M7S</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope></search><sort><creationdate>20171201</creationdate><title>Passive Control of Vortex Shedding via Screen Shroud</title><author>Azmi, A M ; Zhou, T.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c354t-82a282df329bd119cedb98deb4b0a71c913d52b3ee1453b8d0a0f392242fcf473</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Circular cylinders</topic><topic>Diameters</topic><topic>Flow visualization</topic><topic>Fluid dynamics</topic><topic>Fluid flow</topic><topic>Passive control</topic><topic>Porosity</topic><topic>Reynolds number</topic><topic>Shrouds</topic><topic>Turbulent flow</topic><topic>Vortex shedding</topic><topic>Vortices</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Azmi, A M</creatorcontrib><creatorcontrib>Zhou, T.</creatorcontrib><collection>IOP Publishing Free Content</collection><collection>IOPscience (Open Access)</collection><collection>CrossRef</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>Materials Science Database</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Materials Science Collection</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><jtitle>IOP conference series. 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| subjects | Circular cylinders Diameters Flow visualization Fluid dynamics Fluid flow Passive control Porosity Reynolds number Shrouds Turbulent flow Vortex shedding Vortices |
| title | Passive Control of Vortex Shedding via Screen Shroud |
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