Study of Vortex-Shedding-Induced Vibration of a Flexible Splitter Plate Behind a Cylinder

Lee, Jinmo; You, Donghyun

doi:10.1115/fedsm2012-72302

Cited by 10 publications

(16 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The magnitude of the tip displacement was also found to vary strongly and non-monotonically, especially for the lower values of bending stiffness explored in that study. Meanwhile, Lee & You (2013) performed numerical simulations for the low Reynolds number of Re = 100 while varying the plate's length and stiffness. For smaller plate lengths, they obtained a non-monotonic variation of the frequency and magnitude of the tip displacement when varying the bending stiffness.…”

Section: Introductionmentioning

confidence: 99%

“…If unsteady simulations give the amplitude and frequency of the self-sustained oscillations resulting from the interaction of the flexible splitter plate with the flow, they provide only a limited overview of the underlying destabilizing linear mechanisms at play. For instance, Lee & You (2013) concluded that the Strouhal number of vortex shedding or the frequency of plate deflection were difficult to estimate using natural frequencies of the plate's bending modes. It is therefore unclear whether a resonance condition between the frequency of the hydrodynamic vortex-shedding mode and that of the plate's bending modes may apply.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fluid–structure stability analyses and nonlinear dynamics of flexible splitter plates interacting with a circular cylinder flow

Pfister

Marquet

2020

J. Fluid Mech.

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fluid–structure stability analyses and nonlinear dynamics of flexible splitter plates interacting with a circular cylinder flow

Pfister

Marquet

2020

J. Fluid Mech.

View full text Add to dashboard Cite

“…The flow past an isolated square cylinder with flexible splitter plate has been studied by a number of researchers in past [5][6][7]. We extend these studies to two cylinders placed side-by-side.…”

Section: Resultsmentioning

confidence: 99%

“…They found the position of the plate required to make the wake steady. A number of researchers have studied the effect of flexible splitter plate on flow past a cylinder, for both circular and square geometries [5][6][7]. The objective of the present paper is to investigate the effect of flexible splitter plates on aeroelastic response of single and multiple cylinders.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of vortex induced vibration of cylinders with flexible splitter plates

Furquan

Sahu

Mittal

2017

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

Abstract. Vortex induced vibration (VIV) of circular and square cylinders with flexible splitter plates is studied at low Reynolds numbers. Finite element based flow and structure solvers, coupled using a partitioned approach, are used for simulating the fluid-structure interaction. Effect of flexibility of an attached flexible plate on its ability to suppress the VIV of a circular cylinder is considered. Flexibility of the plate is found to adversely affect the reduction in amplitude of the vibration of the cylinder. Next, flow past two square cylinders with deformable splitter plates placed side-by-side is considered. Vibration response of the two plates is studied for different values of flexibility. Initially, the plates vibrate out-of-phase with each other, but eventually settle for an in-phase fully developed response. Large amplitude of vibrations in the fully developed response is observed when its dominant frequency is close to the first natural frequency of the plate vibrations. IntroductionVortex induced vibrations (VIV) of bluff bodies is a problem of great practical as well as academic interest. There has been a great effort in the direction of understanding and controlling this phenomenon. Splitter plates are a popular device used for modifying/controlling vortex shedding from cylinders and the associated vibrations. The effect of variations in geometry, especially length, of rigid splitter plates on the vortex shedding and cylinder oscillations has been investigated by a number of researchers in past [1,2]. Kwon and Choi [1] found that the splitter plate length must exceed a critical value, depending on the value of the Reynolds number, to be able suppress the vortex shedding. Wu and Zhao [3] considered the effect of a rigid splitter plate hinged to the rear of a circular cylinder supported on springs. The effect of a flexible splitter on an elastically mounted cylinder is, however, much less explored.The effect of splitter plates on multiple rigid bodies has also not received great attention. Kim and Durbin [4] studied the effect of a single splitter plate placed along the centerline between two circular cylinders in a side-by-side arrangement. They found the position of the plate required to make the wake steady. A number of researchers have studied the effect of flexible splitter plate on flow past a cylinder, for both circular and square geometries [5][6][7]. The objective of the present paper is to investigate the effect of flexible splitter plates on aeroelastic response of single and multiple cylinders. While the multiple cylinders are on rigid support, the single cylinder is on elastic support. Both circular as well as square geometries are considered. The effect of flexibility of the plate on the fluidstructure interaction is investigated. In particular, we study the phenomena of lock-in and galloping.

show abstract

“…Drag reduction of a D section cylinder is achieved by placing a wavy foil downstream in a numerical study [2]. Another numerical study showed that vortex shedding frequency of a bluff body varies non-monotonically with respect to the length of the flexible plate [3]. The study also showed that the oscillation frequency of the flexible plate is function of wake frequency as well as natural frequency of the plate and high flexibility increases the drag and lift forces of the bluff body.…”

Section: Introductionmentioning

confidence: 99%

Flow Over a Square Cylinder With an Attached Cambered Flexible Wake Splitter

Sharma¹,

Dutta²

2019

Topical Problems of Fluid Mechanics 2019

View full text Add to dashboard Cite

Particle Image Velocimetry (PIV) study is performed to analyse the effects of flow over a cambered flexible wake splitter attached to the lee side of a square cylinder at an intermediate Reynolds number (Re D = 600, where D is the blocking width of the cylinder). The study shows that the cambered flexible wake splitter (length, L = 8D) undergoes vortex induced, asymmetric low amplitude flapping due to which near wake becomes slightly asymmetric. The flexible film increases the centre line celerity in the wake by transferring momentum to the fluid downstream and reduces the wake width due to less entrainment of free stream fluid. Wake splitters beyond a particular length, interact with the primary vortices and shed secondary vortices on either side of the wake splitter due to Coanda effect. In the present study, shedding of asymmetric secondary vortices is observed which owes to the increased pressure in the lower wake envelope due to asymmetric flapping of the cambered splitter. The study indicates towards the positive lift generation due to asymmetric flapping of the cambered film.

show abstract

Study of Vortex-Shedding-Induced Vibration of a Flexible Splitter Plate Behind a Cylinder

Cited by 10 publications

References 0 publications

Fluid–structure stability analyses and nonlinear dynamics of flexible splitter plates interacting with a circular cylinder flow

Fluid–structure stability analyses and nonlinear dynamics of flexible splitter plates interacting with a circular cylinder flow

Numerical simulation of vortex induced vibration of cylinders with flexible splitter plates

Flow Over a Square Cylinder With an Attached Cambered Flexible Wake Splitter

Contact Info

Product

Resources

About