Study of the unsteady aerodynamics of floating wind turbines
The aerodynamic performance and instabilities of floating platform wind turbines are much more complex than fixed based wind turbines because of the flexibility of the floating platform. Due to the extra six degree-of-freedom of the floating platform, the inflow of the wind turbine rotors is highly...
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| Veröffentlicht in: | Energy (Oxford) 2018-02, Vol.145, p.793-809 |
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| creator | Shen, Xin Chen, Jinge Hu, Ping Zhu, Xiaocheng Du, Zhaohui |
| description | The aerodynamic performance and instabilities of floating platform wind turbines are much more complex than fixed based wind turbines because of the flexibility of the floating platform. Due to the extra six degree-of-freedom of the floating platform, the inflow of the wind turbine rotors is highly influenced by the motions of the floating platform. In the present study, an unsteady lifting surface method with a free wake model is developed for the analysis of the wind turbine unsteady performance under the floating platform surge motion conditions. The full scale NREL 5 MW floating wind turbine is chosen as the subject of the present study. The unsteady aerodynamic performance and instabilities have been discussed in detailed. It is believed that under certain platform surge motion, the wind turbine may gain more aerodynamic power output than under steady state condition. The flow separation on the surface of the blade and the pitch control may have the potential of leading the floating wind turbine into unstable conditions during certain platform surge motion.
•Unsteady lifting surface method with free wake model is used as aerodynamic model.•Unsteady performance of the wind turbine under platform surge motions are analyzed.•The wind turbine can extract extra energy under platform surge motion.•Certain surge motion may lead the floating wind turbine system into unstable state. |
| doi_str_mv | 10.1016/j.energy.2017.12.100 |
| format | Article |
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•Unsteady lifting surface method with free wake model is used as aerodynamic model.•Unsteady performance of the wind turbine under platform surge motions are analyzed.•The wind turbine can extract extra energy under platform surge motion.•Certain surge motion may lead the floating wind turbine system into unstable state.</description><identifier>ISSN: 0360-5442</identifier><identifier>EISSN: 1873-6785</identifier><identifier>DOI: 10.1016/j.energy.2017.12.100</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Aerodynamics ; Equilibrium flow ; Floating ; Floating platform ; Flow separation ; Horizontal axis wind turbine ; Inflow ; Pitch (inclination) ; Potential flow theory ; Rotors ; Surge motion ; Turbines ; Unsteady aerodynamics ; Wind power ; Wind turbines</subject><ispartof>Energy (Oxford), 2018-02, Vol.145, p.793-809</ispartof><rights>2017 Elsevier Ltd</rights><rights>Copyright Elsevier BV Feb 15, 2018</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c446t-b7467152a34660aaf7db58933d8c5da8704f674c17094cf3a994396a9b8ce97f3</citedby><cites>FETCH-LOGICAL-c446t-b7467152a34660aaf7db58933d8c5da8704f674c17094cf3a994396a9b8ce97f3</cites><orcidid>0000-0003-2011-0605</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0360544217321436$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Shen, Xin</creatorcontrib><creatorcontrib>Chen, Jinge</creatorcontrib><creatorcontrib>Hu, Ping</creatorcontrib><creatorcontrib>Zhu, Xiaocheng</creatorcontrib><creatorcontrib>Du, Zhaohui</creatorcontrib><title>Study of the unsteady aerodynamics of floating wind turbines</title><title>Energy (Oxford)</title><description>The aerodynamic performance and instabilities of floating platform wind turbines are much more complex than fixed based wind turbines because of the flexibility of the floating platform. Due to the extra six degree-of-freedom of the floating platform, the inflow of the wind turbine rotors is highly influenced by the motions of the floating platform. In the present study, an unsteady lifting surface method with a free wake model is developed for the analysis of the wind turbine unsteady performance under the floating platform surge motion conditions. The full scale NREL 5 MW floating wind turbine is chosen as the subject of the present study. The unsteady aerodynamic performance and instabilities have been discussed in detailed. It is believed that under certain platform surge motion, the wind turbine may gain more aerodynamic power output than under steady state condition. The flow separation on the surface of the blade and the pitch control may have the potential of leading the floating wind turbine into unstable conditions during certain platform surge motion.
•Unsteady lifting surface method with free wake model is used as aerodynamic model.•Unsteady performance of the wind turbine under platform surge motions are analyzed.•The wind turbine can extract extra energy under platform surge motion.•Certain surge motion may lead the floating wind turbine system into unstable state.</description><subject>Aerodynamics</subject><subject>Equilibrium flow</subject><subject>Floating</subject><subject>Floating platform</subject><subject>Flow separation</subject><subject>Horizontal axis wind turbine</subject><subject>Inflow</subject><subject>Pitch (inclination)</subject><subject>Potential flow theory</subject><subject>Rotors</subject><subject>Surge motion</subject><subject>Turbines</subject><subject>Unsteady aerodynamics</subject><subject>Wind power</subject><subject>Wind turbines</subject><issn>0360-5442</issn><issn>1873-6785</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp9UMtKxDAUDaLgOPoHLgquO940adKACCK-YMCFug5pHmPKTDsmqdK_N0Ndu7rcc8-DexC6xLDCgNl1t7K9DZtpVQHmK1xlFI7QAjeclIw39TFaAGFQ1pRWp-gsxg4A6kaIBbp5S6OZisEV6dMWYx-TVXlXNgxm6tXO63g4uu2gku83xY_vTZHG0PrexnN04tQ22ou_uUQfjw_v98_l-vXp5f5uXWpKWSpbThnHdaUIZQyUcty0OZ0Q0-jaqIYDdYxTjTkIqh1RQlAimBJto63gjizR1ey7D8PXaGOS3TCGPkfKCigDUtcUZxadWToMMQbr5D74nQqTxCAPPclOzj3JQ08SVxmFLLudZTZ_8O1tkFF722trfLA6STP4_w1-AVtyciM</recordid><startdate>20180215</startdate><enddate>20180215</enddate><creator>Shen, Xin</creator><creator>Chen, Jinge</creator><creator>Hu, Ping</creator><creator>Zhu, Xiaocheng</creator><creator>Du, Zhaohui</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7ST</scope><scope>7TB</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>KR7</scope><scope>L7M</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0003-2011-0605</orcidid></search><sort><creationdate>20180215</creationdate><title>Study of the unsteady aerodynamics of floating wind turbines</title><author>Shen, Xin ; Chen, Jinge ; Hu, Ping ; Zhu, Xiaocheng ; Du, Zhaohui</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c446t-b7467152a34660aaf7db58933d8c5da8704f674c17094cf3a994396a9b8ce97f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Aerodynamics</topic><topic>Equilibrium flow</topic><topic>Floating</topic><topic>Floating platform</topic><topic>Flow separation</topic><topic>Horizontal axis wind turbine</topic><topic>Inflow</topic><topic>Pitch (inclination)</topic><topic>Potential flow theory</topic><topic>Rotors</topic><topic>Surge motion</topic><topic>Turbines</topic><topic>Unsteady aerodynamics</topic><topic>Wind power</topic><topic>Wind turbines</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Shen, Xin</creatorcontrib><creatorcontrib>Chen, Jinge</creatorcontrib><creatorcontrib>Hu, Ping</creatorcontrib><creatorcontrib>Zhu, Xiaocheng</creatorcontrib><creatorcontrib>Du, Zhaohui</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Environment Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><jtitle>Energy (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Shen, Xin</au><au>Chen, Jinge</au><au>Hu, Ping</au><au>Zhu, Xiaocheng</au><au>Du, Zhaohui</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Study of the unsteady aerodynamics of floating wind turbines</atitle><jtitle>Energy (Oxford)</jtitle><date>2018-02-15</date><risdate>2018</risdate><volume>145</volume><spage>793</spage><epage>809</epage><pages>793-809</pages><issn>0360-5442</issn><eissn>1873-6785</eissn><abstract>The aerodynamic performance and instabilities of floating platform wind turbines are much more complex than fixed based wind turbines because of the flexibility of the floating platform. Due to the extra six degree-of-freedom of the floating platform, the inflow of the wind turbine rotors is highly influenced by the motions of the floating platform. In the present study, an unsteady lifting surface method with a free wake model is developed for the analysis of the wind turbine unsteady performance under the floating platform surge motion conditions. The full scale NREL 5 MW floating wind turbine is chosen as the subject of the present study. The unsteady aerodynamic performance and instabilities have been discussed in detailed. It is believed that under certain platform surge motion, the wind turbine may gain more aerodynamic power output than under steady state condition. The flow separation on the surface of the blade and the pitch control may have the potential of leading the floating wind turbine into unstable conditions during certain platform surge motion.
•Unsteady lifting surface method with free wake model is used as aerodynamic model.•Unsteady performance of the wind turbine under platform surge motions are analyzed.•The wind turbine can extract extra energy under platform surge motion.•Certain surge motion may lead the floating wind turbine system into unstable state.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.energy.2017.12.100</doi><tpages>17</tpages><orcidid>https://orcid.org/0000-0003-2011-0605</orcidid><oa>free_for_read</oa></addata></record> |
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| ispartof | Energy (Oxford), 2018-02, Vol.145, p.793-809 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Aerodynamics Equilibrium flow Floating Floating platform Flow separation Horizontal axis wind turbine Inflow Pitch (inclination) Potential flow theory Rotors Surge motion Turbines Unsteady aerodynamics Wind power Wind turbines |
| title | Study of the unsteady aerodynamics of floating wind turbines |
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