Controlled oscillations of a cylinder: a new wake state
نویسندگان
چکیده
The wake states resulting from the controlled oscillation of a cylinder transverse to the free stream are presented. A new wake state is revealed by instantaneous measurements of the total and vortex lift phases, and the phase-referenced, quantitative wake structure. This ‘‘intermediate wake state’’ occurs at oscillation frequencies between the previously observed lowand high-frequency states. It cannot be deduced from classical, time-averaged representations of the loading on the cylinder. r 2002 Elsevier Science Ltd. All rights reserved.
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