A study of galloping analysis of ice-accreted transmission line considering unsteady aerodynamic forces
In this study, the effect of unsteady aerodynamic force of ice-accreted transmission line on galloping analysis is investigated. First, unsteady aerodynamic coefficients of ice-accreted single conductor predicted by DES are validated by the wind tunnel test and verified by the galloping analysis bas...
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| Veröffentlicht in: | Journal of Wind Engineering 2020/04/30, Vol.45(2), pp.27-41 |
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| container_title | Journal of Wind Engineering |
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| creator | OKA, Shinichi ISHIHARA, Takeshi |
| description | In this study, the effect of unsteady aerodynamic force of ice-accreted transmission line on galloping analysis is investigated. First, unsteady aerodynamic coefficients of ice-accreted single conductor predicted by DES are validated by the wind tunnel test and verified by the galloping analysis based on the measured unsteady aerodynamic coefficients. The galloping analysis for ice-accreted 4-conductor transmission lines are then performed using steady and unsteady aerodynamic coefficients of single conductor, respectively. As a result, hysteresis of unsteady aerodynamic coefficient shows good agreement with the experiment. The mechanism of hysteresis is explained by the difference of pressure distribution on the ice-accreted conductor between positive and negative torsional directions. The galloping analysis using the unsteady aerodynamic forces improves the amplitudes of galloping predicted by the conventional quasi-steady approach. |
| doi_str_mv | 10.5359/jwe.45.27 |
| format | Article |
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First, unsteady aerodynamic coefficients of ice-accreted single conductor predicted by DES are validated by the wind tunnel test and verified by the galloping analysis based on the measured unsteady aerodynamic coefficients. The galloping analysis for ice-accreted 4-conductor transmission lines are then performed using steady and unsteady aerodynamic coefficients of single conductor, respectively. As a result, hysteresis of unsteady aerodynamic coefficient shows good agreement with the experiment. The mechanism of hysteresis is explained by the difference of pressure distribution on the ice-accreted conductor between positive and negative torsional directions. The galloping analysis using the unsteady aerodynamic forces improves the amplitudes of galloping predicted by the conventional quasi-steady approach.</description><identifier>ISSN: 1349-3507</identifier><identifier>EISSN: 1349-340X</identifier><identifier>DOI: 10.5359/jwe.45.27</identifier><language>eng ; jpn</language><publisher>Tokyo: Japan Association for Wind Engineering</publisher><subject>Aerodynamic coefficients ; Aerodynamic forces ; Aerodynamics ; Conductors ; DES ; galloping analysis ; Hysteresis ; Ice ; Ice-accreted transmission line ; Pressure distribution ; Stress concentration ; Transmission lines ; unsteady aerodynamic forces ; Wind tunnel testing ; Wind tunnels</subject><ispartof>Journal of Wind Engineering, 2020/04/30, Vol.45(2), pp.27-41</ispartof><rights>JAWE</rights><rights>Copyright Japan Science and Technology Agency 2020</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2607-da7437ff55ce0c80b5d1a23d7cff0f2fb18baaaab9e939f547dd71fc1612c1ad3</citedby><cites>FETCH-LOGICAL-c2607-da7437ff55ce0c80b5d1a23d7cff0f2fb18baaaab9e939f547dd71fc1612c1ad3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,1877,27901,27902</link.rule.ids></links><search><creatorcontrib>OKA, Shinichi</creatorcontrib><creatorcontrib>ISHIHARA, Takeshi</creatorcontrib><title>A study of galloping analysis of ice-accreted transmission line considering unsteady aerodynamic forces</title><title>Journal of Wind Engineering</title><addtitle>J. Wind Eng.</addtitle><description>In this study, the effect of unsteady aerodynamic force of ice-accreted transmission line on galloping analysis is investigated. First, unsteady aerodynamic coefficients of ice-accreted single conductor predicted by DES are validated by the wind tunnel test and verified by the galloping analysis based on the measured unsteady aerodynamic coefficients. The galloping analysis for ice-accreted 4-conductor transmission lines are then performed using steady and unsteady aerodynamic coefficients of single conductor, respectively. As a result, hysteresis of unsteady aerodynamic coefficient shows good agreement with the experiment. The mechanism of hysteresis is explained by the difference of pressure distribution on the ice-accreted conductor between positive and negative torsional directions. The galloping analysis using the unsteady aerodynamic forces improves the amplitudes of galloping predicted by the conventional quasi-steady approach.</description><subject>Aerodynamic coefficients</subject><subject>Aerodynamic forces</subject><subject>Aerodynamics</subject><subject>Conductors</subject><subject>DES</subject><subject>galloping analysis</subject><subject>Hysteresis</subject><subject>Ice</subject><subject>Ice-accreted transmission line</subject><subject>Pressure distribution</subject><subject>Stress concentration</subject><subject>Transmission lines</subject><subject>unsteady aerodynamic forces</subject><subject>Wind tunnel testing</subject><subject>Wind tunnels</subject><issn>1349-3507</issn><issn>1349-340X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNo9kE9LxDAQxYMouOge_AYFTx66Jm2z2YKXZfEfLHhR8BamyaRm6SZr0iL99map7lxmePzmwXuE3DC64CWv73c_uKj4ohBnZMbKqs7Lin6e_9-ciksyj9E2lNJ6yZaMzki7zmI_6DHzJmuh6_zBujYDB90YbTyqVmEOSgXsUWd9ABf3Npl4l3XWYaa8i1ZjOL4NLvYIyQwweD062FuVGR8UxmtyYaCLOP_bV-Tj6fF985Jv355fN-ttroolFbkGUZXCGM4VUrWiDdcMilILZQw1hWnYqoE0TY11WRteCa0FMyqFKRQDXV6R28n3EPz3gLGXOz-EFCfKolql0DXnPFF3E6WCjzGgkYdg9xBGyag8VilTlbLishCJfZjYXeyhxRMJobeqwxM54SdZfUGQ6MpfCOt_6Q</recordid><startdate>20200430</startdate><enddate>20200430</enddate><creator>OKA, Shinichi</creator><creator>ISHIHARA, Takeshi</creator><general>Japan Association for Wind Engineering</general><general>Japan Science and Technology Agency</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7ST</scope><scope>7TB</scope><scope>7TG</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>KL.</scope><scope>L7M</scope><scope>SOI</scope></search><sort><creationdate>20200430</creationdate><title>A study of galloping analysis of ice-accreted transmission line considering unsteady aerodynamic forces</title><author>OKA, Shinichi ; ISHIHARA, Takeshi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2607-da7437ff55ce0c80b5d1a23d7cff0f2fb18baaaab9e939f547dd71fc1612c1ad3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng ; jpn</language><creationdate>2020</creationdate><topic>Aerodynamic coefficients</topic><topic>Aerodynamic forces</topic><topic>Aerodynamics</topic><topic>Conductors</topic><topic>DES</topic><topic>galloping analysis</topic><topic>Hysteresis</topic><topic>Ice</topic><topic>Ice-accreted transmission line</topic><topic>Pressure distribution</topic><topic>Stress concentration</topic><topic>Transmission lines</topic><topic>unsteady aerodynamic forces</topic><topic>Wind tunnel testing</topic><topic>Wind tunnels</topic><toplevel>online_resources</toplevel><creatorcontrib>OKA, Shinichi</creatorcontrib><creatorcontrib>ISHIHARA, Takeshi</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Environment Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><jtitle>Journal of Wind Engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>OKA, Shinichi</au><au>ISHIHARA, Takeshi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A study of galloping analysis of ice-accreted transmission line considering unsteady aerodynamic forces</atitle><jtitle>Journal of Wind Engineering</jtitle><addtitle>J. Wind Eng.</addtitle><date>2020-04-30</date><risdate>2020</risdate><volume>45</volume><issue>2</issue><spage>27</spage><epage>41</epage><pages>27-41</pages><issn>1349-3507</issn><eissn>1349-340X</eissn><abstract>In this study, the effect of unsteady aerodynamic force of ice-accreted transmission line on galloping analysis is investigated. First, unsteady aerodynamic coefficients of ice-accreted single conductor predicted by DES are validated by the wind tunnel test and verified by the galloping analysis based on the measured unsteady aerodynamic coefficients. The galloping analysis for ice-accreted 4-conductor transmission lines are then performed using steady and unsteady aerodynamic coefficients of single conductor, respectively. As a result, hysteresis of unsteady aerodynamic coefficient shows good agreement with the experiment. The mechanism of hysteresis is explained by the difference of pressure distribution on the ice-accreted conductor between positive and negative torsional directions. The galloping analysis using the unsteady aerodynamic forces improves the amplitudes of galloping predicted by the conventional quasi-steady approach.</abstract><cop>Tokyo</cop><pub>Japan Association for Wind Engineering</pub><doi>10.5359/jwe.45.27</doi><tpages>15</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Journal of Wind Engineering, 2020/04/30, Vol.45(2), pp.27-41 |
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| language | eng ; jpn |
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| source | J-STAGE Free; EZB-FREE-00999 freely available EZB journals |
| subjects | Aerodynamic coefficients Aerodynamic forces Aerodynamics Conductors DES galloping analysis Hysteresis Ice Ice-accreted transmission line Pressure distribution Stress concentration Transmission lines unsteady aerodynamic forces Wind tunnel testing Wind tunnels |
| title | A study of galloping analysis of ice-accreted transmission line considering unsteady aerodynamic forces |
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