Showing papers in "Journal of Wind Engineering and Industrial Aerodynamics in 1990"

TL;DR: In this article, numerical calculations of laminar vortex shedding flows past circular and square cylinders for Re less than or equal to 5000 in the former case and Re less or equal or equal 300 in the latter case were presented.

TL;DR: In this paper, the results of the κ-ϵ turbulence model and large-eddy stimulation (LES) are used to predict the 3D flow field around a surface-mounted cubic model.

TL;DR: In this article, the variation of mean and fluctuating lift and drag coefficients, friction and pressure coefficients are compiled in the range 10 0 8 for the disturbance-free flow, and the concept of possible inversion of influencing to governing parameters is applied to rough cylinders and turbulent flow.

TL;DR: In this article, the basic observational evidence of the microburst investigated by three fact-finding projects in 1978, 1982, and 1986, at three different climatological locations in the United States.

TL;DR: In this article, the experimental results of lift and drag forces, base pressure and Strouhal number of rectangular cylinders against Reynolds numbers and the side ratios of a model, measured in a wind tunnel and found the interesting fluid-characteristics and phenomena of flow.

TL;DR: In this article, the authors apply the direct finite difference technique of the incompressible Navier-Stokes equations to unsteady flows around a rectangular cylinder and a circular cylinder as typical building and structure shapes.

TL;DR: In this paper, numerical simulations of turbulent flow around a surface mounted cube and over a surface-mounted square rib are presented, where sufficient spatial resolution is essential to get satisfying agreement with experimental data in the critical flow regimes, e.g. above the top face of the flow obstacles.

TL;DR: In this article, wind-induced vibrations of two actual tall towers were reduced to about half upon installation of newly developed Tuned Sloshing Damper, which utilizes liquid motion in circular container.

TL;DR: In this paper, the authors consider three-dimensional flow in a uniform flow with freestream turbulence and shear, and show that for these more general but also more significant conditions a large amount of work remains to be done.

TL;DR: The state of the art of computational wind engineering is reviewed in this article, where a diagnostic system for assessing the results of numerical simulation is described and error estimation and mesh resolution are discussed.

TL;DR: In this paper, a cylinder of figure-8 cross section is adopted as an analytical model for the rain vibration of cable with upper rivulet, and two possible mechanisms are checked for rain vibration by means of quasi-steady galloping analysis; one is Den Hartog mechanism of cable oscillation and another is the two degree-of-freedom instability, caused primarily by the circumferential oscillation of the rivule along cable surface.

TL;DR: The role of rain in the rain-wind induced vibration of the stay cable is shown to be an amplifier of the essential unstable aerodynamic characteristics of the yawed and/or the inclined circular cylinder as discussed by the authors.

TL;DR: In this paper, a large-eddy simulation technique was used to predict the turbulent backward-facing step flow in the free-shear layer and the reattachment zone in a Cartesian grid.

TL;DR: In this article, a wind tunnel model study of a slender tall building of square cross-section is presented, where the aerodynamics are modified by introducing openings or "gaps" in the upper half of the building.

TL;DR: Two rather disparate issues, although both are stochastic in nature, arising from wind engineering are considered: methods for digitally generating sample functions of a wind velocity field and reliability analysis of building structures subjected to multiple natural hazards within the framework of contemporary probabilistic risk assessment procedures.

TL;DR: In this article, a two-equation turbulence model for canopy flows is formulated and explored, which is based on the κ-ϵ model, extended by including terms due to the drag caused by the canopy.

TL;DR: In this paper, the effects of building plan shape on aerodynamic forces and displacement response have been studied for super high-rise building with an assumed height of 600 m in a wind tunnel.

TL;DR: In this paper, the authors considered the flow over a surface-mounted cube placed in a turbulent boundary layer, where one face of the cube is set perpendicular to the approach flow direction.

TL;DR: In this article, a series of wind tunnel tests performed on a 1/50th scale articulated tractor-trailer model mounted on a model bridge deck were performed in low turbulence flow and with a simulation of atmospheric turbulence produced by a grid placed in the entrance of the working section of the wind tunnel.

TL;DR: In this paper, an improved meteorological method for estimating the wind speed profile over sea is developed, based on the Monin-Obukhov similarity theory, which takes into account the stability of the planetary boundary layer, is applied.

TL;DR: In this article, a new approach that facilitates mitigation of wind induced motion of buildings utilizing tuned sloshing dampers is presented, and an example of a tall building equipped with a tuned SLAM damper is presented to illustrate the effectiveness of such devices in mitigating structural motion.

TL;DR: In this article, complex eigenvalue analysis of a 3D frame model under various wind load conditions was performed to solve uncertainties of ordinary methods for coupled flutter oscillation of a very long span suspension bridge.

TL;DR: In this paper, a series of boundary layer and total aerodynamic drag measurements were made using small scale model high speed passenger trains at zero yaw at full scale to determine skin friction.

TL;DR: In this paper, a study was initiated comparing NOAA reconnaissance flight-level winds to 10 m level observations from NOAA's oceanic buoys and platforms, and the results indicated that the 10 m-level surface winds over water were within 55-85% of the winds measured by the reconnaissance aircraft.

TL;DR: In this paper, the analysis and synthesis of pressure fluctuations on bluff bodies in complex turbulent flows, such as structures in the natural wind, using eigenvectors is reviewed, and the basic concepts of correlation and covariance, and properties of the eigenvalues and eigen vectors of the covariance matrix are discussed.

TL;DR: In this paper, drift formation on the lower level of a large-area two-level roof at different wind speeds and in two different approach terrains is examined. But the drift formation is not considered in this paper.

TL;DR: In this paper, a group of three and four equispaced cylinders were measured and the corresponding Strouhal numbers determined. And the free stream Reynolds number was 3×10 4.

TL;DR: In this article, a broadening of our understanding of wind induced surface pressure fluctuations around buildings is presented, with the aerodynamics of prisms immersed in turbulent boundary layer flows, e.g., sensitivity of the surface pressure field to changes in the intensity of the far-field turbulence.

TL;DR: In this article, the aerodynamic behavior of a square cylinder in a uniform flow at high Reynolds numbers is investigated numerically, and the numerical solution for the unsteady flows by direct integration of the 2-D and 3-D incompressible Navier-Stokes equations in the generalized coordinate system is obtained.