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dc.contributor.authorGao, Yangyangen_US
dc.contributor.authorYang, Kangen_US
dc.contributor.authorRen, Xingyueen_US
dc.contributor.authorZhang, Baofengen_US
dc.contributor.authorTan, Soon Keaten_US
dc.identifier.citationGao, Y., Yang, K., Ren, X., Zhang, B., & Tan, S. K. (2018). Flow behavior behind a clockwise-and-counterclockwise rotational oscillating cylinder. Ocean Engineering, 159, 410-421. doi:10.1016/j.oceaneng.2018.04.053en_US
dc.description.abstractFlow characteristics downstream of a rotational oscillating cylinder at Reynolds number Re = 300 was investigated. The experiments were conducted using a model cylinder in a recirculating open water channel and the flow field was captured by using the Particle Image Velocimetry (PIV) technique. The model cylinder was set to undergo clockwise-and-counterclockwise rotation at selected angular amplitude (angular amplitude α varying from 0° to 360°) and at the lock-on frequency ratio Fr = 1.0 (where Fr = fn/fv, the ratio of the forcing frequency fn to the natural vortex shedding frequency fv). The effects of rotational movement of the cylinder on the near wake downstream of the cylinder were interpreted in terms of the instantaneous vorticity patterns, as well as the time-averaged streamline topology, mean velocity distributions and Reynolds shear stress contours. Based on the observation of the flow patterns and vortex contours, it was deduced that the clockwise-and-counterclockwise rotation produced significant effect on the wake and modified the wake flow structures and vortex shedding patterns. The time-averaged streamline structures appeared to be non-symmetrical about the longitudinal axis of the flow.en_US
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en_US
dc.relation.ispartofOcean Engineeringen_US
dc.rights© 2018 Elsevier Ltd. All rights reserved.en_US
dc.subjectEngineering::Civil engineeringen_US
dc.titleFlow behavior behind a clockwise-and-counterclockwise rotational oscillating cylinderen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.contributor.researchMaritime Research Centreen_US
dc.subject.keywordsFlow Behavioren_US
dc.subject.keywordsClockwise-and-counterclockwise Rotationen_US
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