Drag reduction in turbulent channel flow using bidirectional wavy Lorentz force
Turbulent control and drag reduction in a channel flow via a bidirectional traveling wave induced by spanwise oscillating Lorentz force have been investigated in the paper.The results based on the direct numerical simulation（DNS）indicate that the bidirectional wavy Lorentz force with appropriate con...
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| Veröffentlicht in: | Science China. Physics, mechanics & astronomy mechanics & astronomy, 2014-11, Vol.57 (11), p.2133-2140 |
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| container_title | Science China. Physics, mechanics & astronomy |
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| creator | Huang, LePing Choi, KwingSo Fan, BaoChun Chen, YaoHui |
| description | Turbulent control and drag reduction in a channel flow via a bidirectional traveling wave induced by spanwise oscillating Lorentz force have been investigated in the paper.The results based on the direct numerical simulation（DNS）indicate that the bidirectional wavy Lorentz force with appropriate control parameters can result in a regular decline of near-wall streaks and vortex structures with respect to the flow direction,leading to the effective suppression of turbulence generation and significant reduction in skin-friction drag.In addition,experiments are carried out in a water tunnel via electro-magnetic（EM）actuators designed to produce the bidirectional traveling wave excitation as described in calculations.As a result,the actual substantial drag reduction is realized successfully in these experiments. |
| doi_str_mv | 10.1007/s11433-014-5416-2 |
| format | Article |
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Physics, mechanics & astronomy, 2014-11, Vol.57 (11), p.2133-2140</ispartof><rights>Science China Press and Springer-Verlag Berlin Heidelberg 2014</rights><rights>Science China Press and Springer-Verlag Berlin Heidelberg 2014.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c485t-8efdbe756c2d6a5991da1a76fdd3bc717c1a25b3a4cb12de8d65f600fd7605443</citedby><cites>FETCH-LOGICAL-c485t-8efdbe756c2d6a5991da1a76fdd3bc717c1a25b3a4cb12de8d65f600fd7605443</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://image.cqvip.com/vip1000/qk/60109X/60109X.jpg</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11433-014-5416-2$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11433-014-5416-2$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Huang, LePing</creatorcontrib><creatorcontrib>Choi, KwingSo</creatorcontrib><creatorcontrib>Fan, BaoChun</creatorcontrib><creatorcontrib>Chen, YaoHui</creatorcontrib><title>Drag reduction in turbulent channel flow using bidirectional wavy Lorentz force</title><title>Science China. Physics, mechanics & astronomy</title><addtitle>Sci. China Phys. Mech. Astron</addtitle><addtitle>SCIENCE CHINA Physics, Mechanics ＆ Astronomy</addtitle><description>Turbulent control and drag reduction in a channel flow via a bidirectional traveling wave induced by spanwise oscillating Lorentz force have been investigated in the paper.The results based on the direct numerical simulation（DNS）indicate that the bidirectional wavy Lorentz force with appropriate control parameters can result in a regular decline of near-wall streaks and vortex structures with respect to the flow direction,leading to the effective suppression of turbulence generation and significant reduction in skin-friction drag.In addition,experiments are carried out in a water tunnel via electro-magnetic（EM）actuators designed to produce the bidirectional traveling wave excitation as described in calculations.As a result,the actual substantial drag reduction is realized successfully in these experiments.</description><subject>Actuators</subject><subject>Astronomy</subject><subject>Bidirectional</subject><subject>Channel flow</subject><subject>Classical and Continuum Physics</subject><subject>Computational fluid dynamics</subject><subject>Direct numerical simulation</subject><subject>Drag reduction</subject><subject>Fluid flow</subject><subject>Friction drag</subject><subject>Friction reduction</subject><subject>Lorentz force</subject><subject>Observations and Techniques</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Skin friction</subject><subject>Traveling waves</subject><subject>Turbulence</subject><subject>Turbulent flow</subject><subject>Wave excitation</subject><subject>减阻</subject><subject>控制参数</subject><subject>水通道</subject><subject>波浪</subject><subject>洛伦兹力</subject><subject>流动方向</subject><subject>湍流控制</subject><subject>直接数值模拟</subject><issn>1674-7348</issn><issn>1869-1927</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNqNkT1LBDEQhhdRUPR-gF3QxmY1k89NKX7DgY3WIZtk7_ZYE012Ff31Rk8ULMRpZornfYeZt6r2AR8DxvIkAzBKawys5gxETTaqHWiEqkERuVlmIVktKWu2q1nOK1yKKswk26luz5NZoOTdZMc-BtQHNE6pnQYfRmSXJgQ_oG6IL2jKfVigtnd98p-sGdCLeX5F85gK_Ia6mKzfq7Y6M2Q_--q71f3lxd3ZdT2_vbo5O53XljV8rBvfudZLLixxwnClwBkwUnTO0dZKkBYM4S01zLZAnG-c4J3AuHNSYM4Y3a2O1r6PKT5NPo_6oc_WD4MJPk5Zg-BMNAxT-R8UqOKKNwU9_IWu4pTKpVkTVT4KRHBVKFhTNsWck-_0Y-ofTHrVgPVHIHodiC6B6I9ANCkastbkwoaFTz_Of4kOvhYtY1g8Fd33JiEIaThWhL4DvN2Ynw</recordid><startdate>20141101</startdate><enddate>20141101</enddate><creator>Huang, LePing</creator><creator>Choi, KwingSo</creator><creator>Fan, BaoChun</creator><creator>Chen, YaoHui</creator><general>Science China Press</general><general>Springer Nature B.V</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>~WA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>P5Z</scope><scope>P62</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>7TB</scope><scope>7U5</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope><scope>7TG</scope><scope>KL.</scope></search><sort><creationdate>20141101</creationdate><title>Drag reduction in turbulent channel flow using bidirectional wavy Lorentz force</title><author>Huang, LePing ; 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Astron</stitle><addtitle>SCIENCE CHINA Physics, Mechanics ＆ Astronomy</addtitle><date>2014-11-01</date><risdate>2014</risdate><volume>57</volume><issue>11</issue><spage>2133</spage><epage>2140</epage><pages>2133-2140</pages><issn>1674-7348</issn><eissn>1869-1927</eissn><abstract>Turbulent control and drag reduction in a channel flow via a bidirectional traveling wave induced by spanwise oscillating Lorentz force have been investigated in the paper.The results based on the direct numerical simulation（DNS）indicate that the bidirectional wavy Lorentz force with appropriate control parameters can result in a regular decline of near-wall streaks and vortex structures with respect to the flow direction,leading to the effective suppression of turbulence generation and significant reduction in skin-friction drag.In addition,experiments are carried out in a water tunnel via electro-magnetic（EM）actuators designed to produce the bidirectional traveling wave excitation as described in calculations.As a result,the actual substantial drag reduction is realized successfully in these experiments.</abstract><cop>Heidelberg</cop><pub>Science China Press</pub><doi>10.1007/s11433-014-5416-2</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Actuators Astronomy Bidirectional Channel flow Classical and Continuum Physics Computational fluid dynamics Direct numerical simulation Drag reduction Fluid flow Friction drag Friction reduction Lorentz force Observations and Techniques Physics Physics and Astronomy Skin friction Traveling waves Turbulence Turbulent flow Wave excitation 减阻 控制参数 水通道 波浪 洛伦兹力 流动方向 湍流控制 直接数值模拟 |
| title | Drag reduction in turbulent channel flow using bidirectional wavy Lorentz force |
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