Showing papers in "Journal of Wind Engineering and Industrial Aerodynamics in 1993"

TL;DR: In this paper, velocity and turbulence profiles associated with the k-ϵ turbulence model are proposed which produce homogeneous conditions, and the cospectrum for the Reynolds stress exhibits a characteristics frequency n o ≈ u ∗ / z which is consistent with the suggested profile equations.

TL;DR: In this paper, the variations of drag and base suction of circular cylinders and bluff plates over the range of Reynolds number from 10 to 10^7 are discussed, with emphasis on the importance of the separated shear layers.

TL;DR: In this paper, an experimental investigation of the flow around and pressure forces on fixed (non-vibrating) rectangular cylinders at angles of attack 0°-90° was conducted.

TL;DR: In this article, a new LES model with variable Smagorinsky constant is presented, and the accuracy of the algebraic approximation adopted in ASM is examined using the numerical data given from LES.

TL;DR: In this article, data have been obtained in the 12-foot pressurized wind tunnel at NASA Ames Research Center on flow past smooth and rough circular cylinders at high Reynolds numbers and the results provide lift and drag coefficients and Strouhal numbers for cylinders of several roughness at Reynolds numbers up to 8 × 10^6.

TL;DR: In this article, a numerical method for the simulation of wind-driven-rain around a building is proposed, which involves two components, i.e., the k - ϵ two equation turbulence model and the forces acting on the droplets.

TL;DR: In this article, the building's dynamic parameters (vibration periods, damping) are examined in three sequential phases: (a) the study of physical-theoretical aspects and of the existing forecast models; (b) the collection of a broad experimental data base; (c) the definition of new simple forecast models.

TL;DR: In this paper, a review of vortex shedding flow past long cylinders at high Reynolds numbers is presented, where the effect of stochastic turbulent fluctuations superimposed on the 2D periodic shedding motion needs to be simulated.

TL;DR: In this paper, the authors focused on the use of wind tunnel test results in the design of the East Bridge, a 3-span suspension bridge of span lengths 535, 1624 and 535 m. Particular attention was given to the strategy adopted for wind tunnel testing, and selected results obtained.

TL;DR: In this article, the results of the wind tunnel tests were used for the analysis of the response of a square building with chamfered corners or openings to the wind forces in X and Y-axis.

TL;DR: In this article, full scale wind velocity and pressure measurements at the Texas Tech Field Research Laboratory have been used to evaluate the performance of the Quasi-steady Theory and the results show that the theory's predictions deviate from the theory in regions of flow separation, although the incorporation of non-linear terms improves the match.

TL;DR: It is demonstrated that these methods offer powerful computational approaches to a variety of physical phenomena in wind engineering and need to be supplemented with special considerations for boundary conditions and for numerical stability.

TL;DR: In this paper, the effects of freestream turbulence on bluff body flow and flutter are reviewed using wind-tunnel measurements on 2D and 3D bluff bodies with rectangular cross-sections.

TL;DR: In this paper, the authors deal with the problem of turbulence effect on the instability of a long span suspended bridge subjected to wind action and explain the results obtained in a wind tunnel on "taut strip" and complete 3D models.

TL;DR: In this paper, the authors describe measurements of the flow patterns and pressure field around a low-rise portal framed building (24 m long × 13 m span × 4 m eaves height, 10° roof pitch) on which extensive full-scale wind load measurements have been made.

TL;DR: In this paper, the characteristics of the wind and the response of the tower during typhoon are investigated and discussed and an extraordinary large turbulence intensity was observed near the center of the typhoon.

TL;DR: In this article, the authors used large eddy simulation (LES) to predict the velocity and pressure fields around a low-rise experimental building located at Texas Tech University and compared the results of LES with those of field and wind tunnel measurements.

TL;DR: In this paper, the results of numerical solutions of the Navier-Stokes equations, augmented by the k-ϵ model of turbulence, for an axial flow fan operating under distorted inflow conditions are presented.

TL;DR: In this article, the viability of using two-way interactive multiple nested grids to investigate the interaction of the outflow from the microburst with a much smaller scale architectural structure is investigated.

TL;DR: In this article, the authors presented the numerical prediction of turbulent wind pressures on the surfaces of various buildings with sharp corners of right angles for different wind directions, using the k-e turbulence model for closure.

TL;DR: In this paper, the authors discuss the aerodynamics of surface vehicles viewed as bluff or quasi-bluff bodies from the perspective of the wind tunnel practitioner and summarize current wind tunnel techniques and illustrate the broad range of contemporary applications through examples drawn primarily from the author's experience.

TL;DR: The Akashi Kaikyo Bridge as mentioned in this paper is a very long-span truss-stiffened suspension bridge for six road lanes with a main span of 1,990 m and two side spans of 960 m.

TL;DR: In this article, the authors describe the hybrid characteristics of vortex-induced oscillation (VIO), which are caused by Karman vortex shedding and motion-induced vortices of bridge box girders and its response sensitivity to turbulence.

TL;DR: In this paper, the proper orthogonal decomposition was applied in an investigation of the aerodynamic loading on a roof of a low-rise building and Pneumatically averaged pressure in a corner region of the roof, measured for concerning wind, was used in the analysis.

TL;DR: In this paper, a finite element method based on the ALE formulation is applied to simulate vortex-induced vibrations of a circular cylinder, and a series of computations over the Reynolds number range between 100 and 140 reveal "beat" and "lock-in".

TL;DR: In this paper, the authors analyzed the flow field around a vortex induced vibrating cylinder by numerical simulation using the discrete vortex model and found that the energy which encourages the movement of the cylinder is supplied when the rolling up of the shear layer is promoted by the movement.

TL;DR: In this article, the authors trace the origins of our understanding of the shear layers separating from the leading edge of a bluff body and the key role played by turbulence, in particular the effect on the pressures developed under the reattaching shear layer.

TL;DR: In this article, a turbulence model for flows within plant and urban canopies was described. But the model was closed by the semi-empirical scheme of Launder et al. (1975) and the results derived from the models were in good agreement with measured data for both the plant and the urban canopy flows.

TL;DR: In this paper, the roughness parameters introduced in a refined k −ϵ turbulence model were optimized for relevant application on staggered arrayed cubic blocks, and the results showed good agreement with experimental data.