The planar boundary affects the flow physics of the wake behind a rotationally oscillating cylinder about its axis and has potential practical engineering applications in areas dealing with fluid mixing and offshore and marine engineering. Wake modes in the transition regime of the flow behind a circular cylinder have been a topic of interest for a long time. In this study, various wake modes in the cross-plane and the spanwise plane are discussed for various gap distances (distance from the planar boundary to the cylinder) and cylinder forcing parameters (oscillation amplitude and frequency) of a rotationally oscillating cylinder.
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Bhattacharyya et al. (2023) studied this question.
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