Showing papers in "Journal of Wind Engineering and Industrial Aerodynamics in 1996"

TL;DR: In this article, a wind tunnel study of car exhaust dispersion from street canyons in an urban environment to investigate how pollution dispersion is affected by street geometry was conducted.

TL;DR: In this paper, an analysis of the evolution of turbulence characteristics in wind-turbine wakes has been carried out based on experimental results and on numerical results obtained with a CFD code, complemented with some theoretical considerations.

TL;DR: In this article, the effects of damping on the system response are analyzed in terms of a perturbation technique, second-moment analysis and Monte Carlo simulation. And the implications of the uncertainty of dampness on system response have been discussed.

TL;DR: In this article, an RDT ranked by peak amplitude is proposed for directly and effectively evaluating the amplitude dependences of dynamic phenomena, and the proposed technique is applied to wind-induced response data of three towers and the results are compared with those of the traditional technique.

TL;DR: In this article, the aerodynamic damping of two-dimensional rectangular prisms in smooth flow is described, and their generation mechanisms are discussed on the basis of aerodynamic derivatives, obtained from the unsteady pressure measurement under the 1DOF heaving/torsional forced vibration.

TL;DR: In this paper, the authors studied the oscillations of cables of a cable-stayed bridge under the combined effect of wind and rain, as during some observations rain was a probable cause for an unstable behavior of an otherwise stable system.

TL;DR: In this paper, the wind speed observations of three offshore platforms over the period 1985-1992 have been analyzed, including calculation of mean wind speeds, availability of data, annual and diurnal variations, the Weibull parameters and the distribution by wind direction.

TL;DR: In this paper, the authors re-examine the traditional Gumbel extreme value method for analysing annual maximum windspeeds or similar data, with a view to improving the process.

TL;DR: In this paper, the fundamental single-mode frequency-domain formulation is extended into the multi-modal domain and a detailed example is presented to highlight the importance of using a coupled analysis procedure for suspended bridges with longer spans.

TL;DR: In this article, the shedding frequencies and associated Strouhal numbers of vortices behind a flat plate with beveled sharp edges have been studied experimentally at angles of attack α = 0°-90° and Reynolds numbers in the range 3.5 × 10 3 − 3.2 × 10 4.

TL;DR: In this paper, the characteristics of suction fluctuation on a flat roof in smooth and turbulent flows are investigated by a wind tunnel test, where the authors show that the large fluctuation is induced near the windward corner by conical vortices when flow attacks oblique to a roof.

TL;DR: In this article, phase-averaged velocity distributions were measured using particle imaging velocimetry with a conditional sampling technique, and the results were compared with numerical calculations by a discrete vortex method.

TL;DR: In this paper, the influence of wind on fan performance and recirculation in a forced draught air-cooled heat exchanger (ACHE) bank is investigated numerically.

TL;DR: In this article, the authors address the question of a description of the damping characteristics inherent in real structures and present a discussion of the mechanisms causing energy loss and the practicalities of measurement when the parameter is not only nonlinear but also the forcing function and the response are nonstationary.

TL;DR: In this paper, a stick model of a building is used to evaluate the aerodynamic damping of tall buildings by wind tunnel tests using the random decrement technique, where the wind-induced responses of the model are evaluated by using the Random Decomposition technique.

TL;DR: In this article, the influence on flutter instability of each of the aerodynamic derivatives, which were obtained by pressure measurement on the side surface of 2-D rectangular cylinders with various side-ratios B/D (B is the chord length, D the height) between 5 and 20 under the 1DOF heaving/torsional forced vibration, was discussed through a step-by-step method.

TL;DR: In this paper, wind characteristics for the Texas Tech University field site and four different flow simulations are discussed in order to evaluate the full/model-scale comparison of the surface pressures on the roof of the experimental building at this site.

TL;DR: The Vindeby monitoring project has been established to provide information on the world's first offshore wind farm at Vindebø, Denmark over the course of the project, different aspects of offshore meteorology which are relevant to offshore wind energy production will be examined in addition to turbine loading and behaviour in offshore conditions as discussed by the authors.

TL;DR: In this article, a collation of the results of several investigators for the aerodynamic forces and moments on lorries and railway containers in high cross winds, which were obtained in a variety of different wind tunnel simulations are mainly considered.

TL;DR: In this paper, a two-dimensional finite-volume model of the flow over a cooling tower is presented, where the cooling tower structure is implemented in the form of internal boundaries.

TL;DR: In this paper, the design features of a special wind tunnel built in New Zealand which can produce twisted flow in the test section which is suitable for testing model yachts are described.

TL;DR: In this paper, the wind-induced responses of Tokyo International Airport Tower have been measured in order to investigate the efficiency of the tuned liquid damper (TLD), and the damping ratio and the natural frequency of the tower are evaluated by the random decrement technique.

TL;DR: In this article, the flutter derivatives of five sections measured through forced oscillation method (three different deck sections typologies, Tacoma, Humber and Messina, together with the reference flat plate and NACA 0012 profiles) are compared in three different representation conventions.

TL;DR: In this article, a comprehensive assessment of damping values and other dynamic characteristics of five buildings using strong-motion and low-amplitude (ambient vibration) data is presented.

TL;DR: In this article, the authors investigated uniform flow past one (or two in tandem formation) finite length circular cylinder(s) and found that the flow that separates from the free end interacts strongly with those that separate from the sides and results in a three-dimensional flow.

TL;DR: In this article, a wind farm on the island of Andros (Greece) is studied and the mean turbulence parameters are derived and compared with the von Karman formulation during free stream and wake conditions and corresponding turbulence length scales are determined.

TL;DR: In this paper, measurements of the dynamic response of Kessock bridge made between October 1991 and May 1992 indicated that on three occasions the bridge experienced abnormally large response, and the peak dynamic displacement occurred due to resonance of the first vibration mode with vortex shedding.

TL;DR: In this paper, an experimental and numerical investigation on vortex shedding from elongated rectangular cylinders at low Reynolds numbers 200-10 3 was performed in a low speed wind tunnel, and the numerical analysis was based on the finite difference method applicable to the 2D Navier-Stokes equations.

TL;DR: In this paper, the possibilities to evaluate the aerodynamic roughness of a homogeneous building group by experiments or by analytical models were discussed, and it was shown that experimental errors and as a consequence model uncertainties in z 0 can be larger than a factor 2.

TL;DR: In this article, the flutter derivatives associated with sway are determined for a streamlined (Tsurumi) and a bluff (Deer Isle) deck sections, compared to a pseudostatic approximation and their significance in the estimation of flutter speed.