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Showing papers in "Journal of Wind Engineering and Industrial Aerodynamics in 2014"


Journal ArticleDOI
TL;DR: In this paper, the authors provide a perspective on the past, present and future of Computational Wind Engineering (CWE) and provide a more detailed view on CFD simulation of pedestrian-level wind conditions around buildings.

570 citations


Journal ArticleDOI
TL;DR: In this paper, the effect of galloping and Karman-vortex resonance on long rectangular cylinders is investigated. But the authors focus on the effect on the stability of the galloping instability and the Strouhal number.

176 citations


Journal ArticleDOI
TL;DR: In this paper, the authors summarized the contributions of various large eddy simulation (LES) investigations into wind farm aerodynamics and how they have helped broaden our understanding of the subject.

161 citations


Journal ArticleDOI
TL;DR: In this paper, an aeroelastically scaled model of a wind turbine is described, featuring active individual blade pitch and torque control, which is capable of simulating steady conditions and transient maneuvers in the boundary layer test section of the wind tunnel of the Politecnico di Milano.

154 citations


Journal ArticleDOI
TL;DR: In this article, the results of about 70 realizations of the BARC flow configuration obtained under a nominally common set-up in both wind tunnel experiments and numerical simulations are compared among themselves and with the data available in the literature prior to BARC, in terms of bulk parameters, flow and aerodynamic load statistics, pressure and force spanwise correlations.

134 citations


Journal ArticleDOI
TL;DR: In this paper, the slipstream of high-speed trains is investigated in a wind tunnel through velocity flow mapping in the wake and streamwise measurements with dynamic pressure probes, and the influence of the modelling ballast and rail or a flat ground configuration on the wake structure and corresponding slipstream results are also presented.

125 citations


Journal ArticleDOI
TL;DR: In this article, a 2D computational investigation of an augmented wind turbine is proposed and analyzed, and three parameters are carefully investigated: mesh resolution, turbulence model, and time step size.

121 citations


Journal ArticleDOI
TL;DR: In this paper, near-surface wind data from thunderstorms which displayed short and rapid wind speed increases (i.e., "ramp-up") were identified and analyzed.

114 citations


Journal ArticleDOI
TL;DR: In this paper, a long-term wind and wind effect monitoring system was created to investigate full-scale wind-induced vibrations of a longspan suspension bridge with a central span of 1650m.

111 citations


Journal ArticleDOI
TL;DR: In this article, a small commercial wind turbine has been carried out with a simple frustum diffuser shrouding and the diffuser has been modeled with different shapes with the aim to understand the effect of length and area ratio on power augmentation.

101 citations


Journal ArticleDOI
TL;DR: In this article, the highly turbulent non-stationary slipstream of a model-scale Class 66 locomotive and wagons was investigated using delayed detached-eddy simulation (DDES).

Journal ArticleDOI
TL;DR: In this article, the authors deal with the management of large sets of wind velocity data, in order to separate and classify independent extreme wind events through a semi-automated procedure involving a suitable mix of systematic quantitative controls and specific qualitative judgments.

Journal ArticleDOI
TL;DR: In this paper, the authors present two new translation-based peak pressure coefficient estimation schemes that offer accurate and stable performance for strongly non-Gaussian data, and one of the new methods slightly outperforms the Gumbel method.

Journal ArticleDOI
TL;DR: In this article, 3D Reynolds-Averaged Navier-Stokes simulations using an unsteady solver with steady inlet conditions are carried out to investigate the wind load and flow field around a ground mounted stand-alone photovoltaic (PV) system with 25° panel tilt angle immersed in the atmospheric boundary layer (ABL) using the shear stress transport (SST) k-ω turbulence closure.

Journal ArticleDOI
TL;DR: In this paper, an experimental study carried out to better understand the wind pressure distribution on stand-alone panel surfaces and panels attached to flat building roofs was carried out at a 1:200 geometric scale.

Journal ArticleDOI
TL;DR: In this paper, the optimization of the nose shape of a high-speed train entering a tunnel has been performed using genetic algorithms (GA), which requires the parameterization of each optimal candidate as a design vector.

Journal ArticleDOI
TL;DR: Wang et al. as mentioned in this paper investigated the aerodynamic interference between vehicle and viaduct, models of a typical simply supported 32-m pre-stressed concrete box beam viADuct and CRH2 train with scale of 1:25 were tested in wind tunnel experiments.

Journal ArticleDOI
TL;DR: In this article, a systematic investigation into the design and simulation of flow parameters in a closed-loop wind tunnel was carried out using Computational Fluid Dynamics (CFD), where the analytical model for estimating pressure losses were directed as input boundary conditions.

Journal ArticleDOI
TL;DR: In this article, the authors studied the wake characteristics in the near and far wake regions of a horizontal axis wind turbine, with an exact representation of the rotor blades, by solving the conservation equations for one outer stationary reference frame and one inner rotating reference frame, wherein the blades and grids were fixed in reference to the rotating frame.

Journal ArticleDOI
TL;DR: In this paper, the results of the most recent experimental simulations of tornado vortices performed in the model WindEEE Dome (MWD) are analyzed and then compared with the full-scale data.

Journal ArticleDOI
TL;DR: In this article, the effects of ambient turbulence on the wake flows and power production of a horizontal-axis wind turbine were investigated, and the power loss due to the velocity deficit in the wake flow was larger than 50% when the downwind distance was less than 12D (D is the rotor diameter).

Journal ArticleDOI
Jiming Xie1
TL;DR: In this paper, the effectiveness of tapering, twisting and stepping, three common schemes of aerodynamic optimization in super-tall building design, is evaluated and a practical approach is proposed for preliminary design.

Journal ArticleDOI
TL;DR: In this paper, the Offset Elliptical Normal (OEN) model was used to fit the Weibull distribution to mean wind speed data in a wind climate dominated by temperate depressions.

Journal ArticleDOI
TL;DR: In this article, a numerical method is presented to investigate the influence of operating conditions on Vertical Axis Wind Turbine (VAWT) of NACA00XX symmetric airfoils with 12% and 22% thickness in unsteady wind condition.

Journal ArticleDOI
TL;DR: In this article, the influence of the laws of train speed, crossing position, and other parameters on the pressure change of the platform screen doors and on board is analyzed using 1/20th scale train models with a head car and an end car.

Journal ArticleDOI
TL;DR: WINDWYO as mentioned in this paper is a coupled mesoscale-microscale framework for wind resource estimation and farm aerodynamics, which is modular, automated and supports coupling of different mesoscales and microscale solvers using overset or matched grids.

Journal ArticleDOI
TL;DR: In this paper, a circular cylinder with splitter plates has been used to investigate the aerodynamic differences between a bare cylinder and a semi-cylindrical roof, and it was found that a frontal splitter plate, with plate length to cylinder diameter ratio of L / D = 3, has produced a postcritical flow at relatively low Reynolds numbers by the generated disturbances in the approaching flow.

Journal ArticleDOI
TL;DR: In this paper, the effect of different end layouts of the embankment model as well as wall proximity effects are analyzed, and two wind tunnel campaigns were carried out on a ETR500 train model 1:45 scaled.

Journal ArticleDOI
TL;DR: In this paper, an experimental investigation was conducted to characterize the unsteady vortices and turbulent flow structures around twin-box-girder bridge deck models with and without cross beams.

Journal ArticleDOI
TL;DR: In this paper, the authors analyzed data from direct numerical simulations in arrays of building-like obstacles and found that the mean flow structure around the buildings exert a strong influence over the dispersion of material in the near field.