Flow characteristics and dynamic responses of a rear circular cylinder behind the square cylinder with different side lengths

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dc.contributor.authorTu, Jiahuangen
dc.contributor.authorSun, Wenjuanen
dc.contributor.authorZhou, Daien
dc.contributor.authorHan, Zhaolongen
dc.contributor.departmentCivil and Environmental Engineeringen
dc.date.accessioned2019-10-04T14:40:51Zen
dc.date.available2019-10-04T14:40:51Zen
dc.date.issued2017-06en
dc.description.abstractWake-induced vibrations of a 2-DOF circular cylinder which is placed behind a stationary square cylinder with tandem arrangement are numerically investigated at low Reynolds numbers by using semi-implicit Characteristics-based split (CBS) finite element algorithm in this study. Numerical results demonstrate that the side length of the upstream square cylinder can significantly affect the characteristics of flow patterns, oscillation frequency, maximum amplitudes, X-Y trajectories, and hydrodynamic coefficients of the rear circular cylinder. The predominant vortex shedding patterns are 2S, 2P and 2T mode. In addition to the figure "8", "raindrop" and figure "dual-8" are observed in the X-Y vibrating trajectories for the circular cylinder. Finally, the interactions between cylinders are revealed according to the phase portrait of fluid force to displacement and the power spectral densities (PSD) features of the vibration amplitude on the rear circular cylinder and the instantaneous flow field, together with the wakeinduced vibration (WIV) mechanism underlying the oscillation characteristics of the circular cylinder behind a stationary square cylinder with different sizes.en
dc.description.notesSupport from the Key Program of National Natural Science Foundation of China (No. 51434002), the Major Program of the National Natural Science Foundation of China (No. 51490674), National Natural Science Foundation of China (Nos. 11602214, 51278297, 51679139), Hunan Provincial Natural Science Foundation of China (No. 2016JJ3117), Doctoral Disciplinary Special Research Project of Chinese Ministry of Education (No. 20130073110096), Scientific Research Project of Department of Education of Hunan Province (No. 15C1318) and China Ocean Mineral Resources Research and Development Association Project under contract No. DY125-14-T-03 are greatly acknowledged.en
dc.description.sponsorshipKey Program of National Natural Science Foundation of China [51434002]; Major Program of the National Natural Science Foundation of China [51490674]; National Natural Science Foundation of China [11602214, 51278297, 51679139]; Hunan Provincial Natural Science Foundation of China [2016JJ3117]; Doctoral Disciplinary Special Research Project of Chinese Ministry of Education [20130073110096]; Scientific Research Project of Department of Education of Hunan Province [15C1318]; China Ocean Mineral Resources Research and Development Association Project [DY125-14-T-03]en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.21595/jve.2017.17611en
dc.identifier.issn1392-8716en
dc.identifier.issue4en
dc.identifier.urihttp://hdl.handle.net/10919/94352en
dc.identifier.volume19en
dc.language.isoenen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectwake-induced vibrationen
dc.subjectwake patternen
dc.subjectdynamic responseen
dc.subjectsemi-implicit characteristic-based split finite element methoden
dc.titleFlow characteristics and dynamic responses of a rear circular cylinder behind the square cylinder with different side lengthsen
dc.title.serialJournal of Vibroengineeringen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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