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Showing papers in "Journal of Fluids and Structures in 2011"


Journal ArticleDOI
TL;DR: In this paper, a selective review of recent research on vortex-induced vibrations of isolated circular cylinders and the flow and vibration of circular cylinders in a tandem arrangement is presented, a common thread being that the topics raised are of particular interest to the author.

568 citations


Journal ArticleDOI
TL;DR: In this paper, a flexible beam with piezoelectric laminates is excited by a uniform axial flow field in a manner analogous to a flapping flag such that the system delivers power to an electrical impedance load.

220 citations


Journal ArticleDOI
TL;DR: In this article, the energy harvested from the flutter of a plate in an axial flow by making use of piezoelectric materials was investigated, and the equations for fully coupled linear dynamics of the fluid-solid and electrical systems were derived.

197 citations


Journal ArticleDOI
TL;DR: In this article, the dynamic response of two flexible cylinders in tandem arrangement partially immersed in a uniform flow is analyzed, and it has been confirmed that the main excitation mechanism is wake-induced vibration (WIV).

141 citations


Journal ArticleDOI
TL;DR: In this article, the effect of helical strakes on suppression of vortex-induced Vibrations (VIV) has been studied extensively, but the mechanism of VIV mitigation using helical Strakes is much less well documented in the literature.

137 citations


Journal ArticleDOI
TL;DR: In this paper, a two-degree-of-freedom vortex-induced vibrations of a circular cylinder close to a plane boundary are investigated numerically using the Arbitrary Lagrangian Eulerian (ALE) scheme with a k-ω turbulence model closure.

136 citations


Journal ArticleDOI
TL;DR: The effect of varying airfoil thickness and camber on plunging and combined pitching and plunging propulsion at Reynolds number Re=200, 2000, 20,000 and 2×10 6 was studied by numerical simulations for fully laminar and fully turbulent flow regimes as mentioned in this paper.

130 citations


Journal ArticleDOI
TL;DR: An experimental study of a low aspect ratio rectangular membrane wing in a wind tunnel was conducted for a Reynolds number range of 2.4×104-4.8×104 as mentioned in this paper. And the dominant frequencies of the membrane vibrations are similar to those of two-dimensional membrane airfoils.

114 citations


Journal ArticleDOI
TL;DR: In this paper, two circular cylinders in tandem arrangements are simulated, where the upstream cylinder is fixed and the downstream cylinder is free to oscillate in the transverse direction, in response to the fluid loads.

108 citations


Journal ArticleDOI
TL;DR: In this article, the free vibrations of a square cylinder at zero incidence were studied and a stabilized space-time finite-element method was used to discretize the equations of fluid flow in two-dimensions.

93 citations


Journal ArticleDOI
TL;DR: In this article, a side-by-side arrangement of two vertical, high aspect ratio (length over diameter) and low mass ratio (mass over mass of displaced fluid) cylinders, pin-jointed at the ends and vibrating at low mode number, was carried out in a free-surface water channel.

Journal ArticleDOI
TL;DR: In this article, the flow interference between two circular cylinders, one stationary and the other free to oscillate in the transverse direction, is studied numerically at Re=150, where center-to-center spacing between the two cylinders is fixed at 4D, where D is the cylinder diameter.

Journal ArticleDOI
TL;DR: In this paper, large-scale fluid-structure interaction simulations of compressible flows over flexible supersonic disk-gap-band parachutes are compared with matching experimental results.

Journal ArticleDOI
TL;DR: OpenFOAM as discussed by the authors provides flow and mesh motion solvers and is coupled to an author-developed structural solver in a tightly coupled approach using a fixed-point iteration for quasi-steady simulations.

Journal ArticleDOI
TL;DR: In this paper, the effects of triplestarting helical grooves on the drag of fixed circular cylinders and the vortex-induced vibration of elastically supported cylinders were investigated.

Journal ArticleDOI
TL;DR: In this article, the Laminar separation of the boundary layer near the trailing edge plays a critical role in initiating and sustaining the self-sustained pitch oscillations in the Reynolds number range 5.0×10 4 c 5.

Journal ArticleDOI
TL;DR: In this article, the effect of the clearance between a cantilevered plate and the side walls on the flutter instability has been investigated theoretically, numerically and experimentally, showing that the critical velocity is always underestimated by two-dimensional models.

Journal ArticleDOI
TL;DR: In this paper, it was shown that porosity affects the scaling of the drag with flow velocity, and the scaling is constant for a large range of porosity values, including high porosity and low porosity.

Journal ArticleDOI
TL;DR: In this paper, a Detached Eddy Simulation (DES) approach is used to investigate the main flow features of the Ahmed body, and several versions of the DES models which are based on the k-! SST turbulence model are used.

Journal ArticleDOI
TL;DR: In this article, the authors used the coupled Lagrangian and Eulerian formulation included in the commercial software LS-DYNA to simulate the impact of a ship hull on stationary water for a short duration during which high local pressures occur on the hull.

Journal ArticleDOI
TL;DR: In this paper, a 2D+t approach is applied to study the wave pattern generated by high speed slender ships with a sharp stem, which allows approximating the ship motion through a set of equations which are mathematically equivalent to those governing the unsteady 2D free-surface flow generated by a deformable body in the vertical plane transverse to the ship.

Journal ArticleDOI
TL;DR: In this article, a numerical analysis of the flow past a circular cylinder centred in a two-dimensional channel of varying width is presented, showing that the Strouhal frequency of shedding vortices increases with blockage ratio.

Journal ArticleDOI
TL;DR: In this paper, a NACA0012 airfoil that undergoes prescribed harmonic oscillation in transonic buffeting flows, and also in pre-buffet flow conditions, is simulated to determine the aerodynamic flow field response.

Journal ArticleDOI
TL;DR: In this article, a probabilistic performance-based design and analysis methodology for flexible composite propulsors was developed for a twin-shafted naval combatant craft, which can be applied for any marine, aerospace, or wind energy structure that must operate in a wide range of loading conditions over its expected life.

Journal ArticleDOI
TL;DR: In this paper, an experimental study was conducted to quantify the characteristics of wake vortex and flow structures around a high-rise building model as well as the resultant wind loads acting on the test model in tornado-like winds.

Journal ArticleDOI
TL;DR: In this paper, a tensioned beam of length to diameter ratio 200, free to move in both the in-line and cross-flow directions, and immersed in a linear shear current was investigated.

Journal ArticleDOI
TL;DR: In this article, a two-dimensional (2-D) fully nonlinear numerical wave tank (NWT) based on the boundary element method (BEM) is developed to calculate the wave forces on the dual pontoon floating structure (DPFS) when attached to a fish net.

Journal ArticleDOI
TL;DR: In this article, the aerodynamic performance of a flexible membrane flapping wing was investigated in a large low-speed wind tunnel and the lift and thrust of this mechanism were measured for different flapping frequencies, angles of attack and for various wind tunnel velocities.

Journal ArticleDOI
TL;DR: In this article, the authors measured the flow fields around three elongated bluff bodies with the same chord-to-thickness ratios but distinct leading and trailing edge details at a Reynolds number of 3×104.

Journal ArticleDOI
TL;DR: In this article, a Lagrangian dynamic subgrid-scale model and a level set based sharp interface method are used for the spatially filtered turbulence closure and the air-water interface treatment, respectively.