3D flow around a rectangular cylinder: A computational study

Bruno, Luca; Fransos, Davide; Coste, Nicolas; Bosco, Arianna

doi:10.1016/j.jweia.2009.10.005

Cited by 161 publications

(97 citation statements)

References 38 publications

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“…1, the time averaged distribution of the pressure coefficient C p is reported along the top side of the rectangle, together with experimental and LES results by different authors. Acceptable agreement is observed with the LES simulation performed in [3]. However, Fig.…”

Section: Results and Final Commentssupporting

confidence: 82%

Large Eddy Simulation of Turbulent Flows: Benchmarking on a Rectangular Prism

Patruno

Ricci

Cimarelli

et al. 2016

Springer Proceedings in Physics

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Preliminary results of a Large Eddy Simulation (LES) of rectangular cylinder performed with OpenFoam are presented. This is the preliminary part of a longer research project aimed at systematically study the ability of Computational Fluid Dynamics (CFD) techniques in reproducing the flow around slender bodies with sharp edges at high Reynolds numbers. In spite of the simple geometry, the problem is influenced by a number of parameters which makes its correct solution difficult to be achieved. The LES approach presented here appears to be a good candidate for this purpose but further analysis must be performed. Indeed, we highlight the need to adopt a finer resolution in the spanwise direction in order to capture the very anisotropic turbulent dynamics. Furthermore, it emerges the need of Direct Numerical Simulation (DNS) data in order to shed light on the compound role played by the turbulence model, the grid resolution and the inlet conditions.

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Section: Results and Final Commentssupporting

confidence: 82%

Large Eddy Simulation of Turbulent Flows: Benchmarking on a Rectangular Prism

Patruno

Ricci

Cimarelli

et al. 2016

Springer Proceedings in Physics

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“…As an example, Bruno et al [12] studied flow around a cylinder at Re = 40,000 by means of a finite volume discretization method. John and Rang [13] applied finite element method to the large eddy simulations of the flow past a square cylinder at Re = 22,000.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Flow around Diamond-Shaped Obstacles at Low to Moderate Reynolds Numbers

Djeddi¹,

Masoudi²,

Ghadimi³

2013

AJAMS

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In this paper, viscous fluid flow over an unconventional diamond-shaped obstacle in a confined channel is simulated in low to moderate Reynolds numbers. The diamond-shaped obstacle is altered geometrically in order to represent different blockage coefficients based on the channel height and different aspect ratios based on the length to height ratios of the obstacle. An in-house finite difference Navier-Stokes solver using staggered grid arrangement and Chorin's projection method is developed for the simulation of the laminar viscous flow. The numerical solver is validated against numerical results that are presented in the literature for the flow over rectangular cylinders and good agreement is observed. Grid resolution has been studied within a mesh convergence test and as a result, suitable grid dimension is achieved. A series of simulations have been carried out for each set of geometry and configuration in order to find the critical Reynolds number for each case in which the vortex shedding will occur. Therefore, simulations are divided into two groups of steady and unsteady flows. In the case of unsteady flow, nondimensional Strouhal Number (St) is investigated and results prove the dependency of St on the blockage coefficient and aspect ratio. It is shown that the Strouhal number will increase with the rise of blockage ratio and the local maximum of St will occur at lower Re for geometries with lower aspect ratios (bluff bodies) than geometries with higher aspect ratios, i.e. with more streamlined bodies.

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“…The flow domain size adopted in all the simulation reported herein is 41B by 30.25B, similar to the size employed in successful simulations by other researchers (Bruno, Fransos, Coste, & Bosco, 2010; and bigger than flow domains in Sun et al (2008), Sarwar and Ishihara (2010) or Arslan, Pettersen, and Andersson (2011). The flow domain size has been chosen in order to guarantee that flow conditions near the bluff body are not influenced by the distance to the boundaries.…”

Section: Boundary Conditionsmentioning

confidence: 74%

On the applicability of 2D URANS and SSTk-ωturbulence model to the fluid-structure interaction of rectangular cylinders

Nieto

Hargreaves

Owen

et al. 2015

Engineering Applications of Computational Fluid Mechanics

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In this work the practical applicability of a 2D URANS approach adopting a block structured mesh and Menter's SST k-ω turbulence model in fluid-structure interaction (FSI) problems is studied using as a test case a ratio B/H = 4 rectangular cylinder. The vortex-induced vibration (VIV) and torsional flutter phenomena are analyzed based on the computation of the out-of-phase and in-phase components of the forced frequency component of lift and moment coefficients when the section is forced to periodically oscillate both in heave and pitch degrees of freedom. Also the flutter derivatives are evaluated numerically from the same forced oscillation simulations. A good general agreement has been found with both experimental and numerical data reported in the literature. This highlights the benefits of this relatively simple and straightforward approach. These methods, once their feasibility has been checked, are ready to use in parametric design of bridge deck sections and, at a later stage, in the shape optimization of deck girders considering aeroelastic constraints.

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3D flow around a rectangular cylinder: A computational study

Cited by 161 publications

References 38 publications

Large Eddy Simulation of Turbulent Flows: Benchmarking on a Rectangular Prism

Large Eddy Simulation of Turbulent Flows: Benchmarking on a Rectangular Prism

Numerical Simulation of Flow around Diamond-Shaped Obstacles at Low to Moderate Reynolds Numbers

On the applicability of 2D URANS and SSTk-ωturbulence model to the fluid-structure interaction of rectangular cylinders

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