Wake transition of two-dimensional cylinders and axisymmetric bluff bodies

Thompson, Mark C.; Hourigan, Kerry; Ryan, Kris; Sheard, Gregory J.

doi:10.1016/j.jfluidstructs.2006.05.001

Cited by 51 publications

(36 citation statements)

References 41 publications

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“…This type of instability mode exists for a circular cylinder (Blackburn and Lopez, 2003;Blackburn et al, 2005) and a square cylinder in freestream (Robichaux et al, 1999). Another type of mode, which has a periodicity of 2T (i.e., it is subharmonic), has been found in wakes behind tori (Sheard et al, 2005a;Thompson et al, 2006b), inclined square cylinders (Sheard, 2011;Sheard et al, 2009), and in rotating cylinders (Rao et al, 2013a(Rao et al, , 2014. The description here is brief and more details can be found in, e.g., Ryan et al (2005), Leontini et al (2007Leontini et al ( , 2013, and Rao et al (2015a).…”

Section: Linear Stability Analysismentioning

confidence: 94%

Flow past a rotating cylinder translating at different gap heights along a wall

Rao

Thompson

Leweke

et al. 2015

Journal of Fluids and Structures

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Section: Linear Stability Analysismentioning

confidence: 94%

Flow past a rotating cylinder translating at different gap heights along a wall

Rao

Thompson

Leweke

et al. 2015

Journal of Fluids and Structures

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“…More details of the solver can be found in Thompson et al (2006a); and the solver has been previously used in studies of bluff-body flows (Thompson et al 1996(Thompson et al , 2006bLeontini et al 2007) and of flows over rolling cylinders near a wall (Stewart et al 2006(Stewart et al , 2010Rao et al 2011).…”

Section: Numerical Formulationmentioning

confidence: 99%

Three-dimensionality in the wake of a rotating cylinder in a uniform flow

et al. 2013

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The wake of a rotating circular cylinder in a free stream is investigated for Reynolds numbers Re 400 and non-dimensional rotation rates of α 2.5. Two aspects are considered. The first is the transition from a steady flow to unsteady flow characterized by periodic vortex shedding. The two-dimensional computations show that the onset of unsteady flow is delayed to higher Reynolds numbers as the rotation rate is increased, and vortex shedding is suppressed for α 2.1 for all Reynolds numbers in the parameter space investigated. The second aspect investigated is the transition from two-dimensional to three-dimensional flow using linear stability analysis. It is shown that at low rotation rates of α 1, the three-dimensional transition scenario is similar to that of the non-rotating cylinder. However, at higher rotation rates, the threedimensional scenario becomes increasingly complex, with three new modes identified that bifurcate from the unsteady flow, and two modes that bifurcate from the steady flow. Curves of marginal stability for all of the modes are presented in a parameter space map, the defining characteristics for each mode presented, and the physical mechanisms of instability are discussed.

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“…Since then, there have been many comprehensive review articles, including Williamson (1996a,b), Norberg (2003), and reviews of wake transition for other cylindrical or axisymmetric bluff bodies (e.g., Thompson et al, 2006b). The flow dynamics are dramatically altered when such bodies are placed close to a plane wall.…”

Section: Introductionmentioning

confidence: 99%