Showing papers in "Journal of Wind Engineering and Industrial Aerodynamics in 1992"

TL;DR: In this article, the Davenport'60 classification is used to give a very realistic assessment of rough non-complex terrain, and it is revised with aid of these experimental data.

TL;DR: In this article, the feasibility of a method to determine the wind speed reduction in the center of a large wind farm by means of simple boundary layer theory was investigated, and the simplest possible assumptions have been chosen.

TL;DR: In this article, the exciting factors and mechanism of rain-wind induced vibration of polyethylene-lapped cable of cable-stayed bridges and the aerodynamic countermeasure to suppress the vibration are discussed.

TL;DR: In this article, the aerodynamic performance and flow fields of Savonius rotors at various overlap ratios have been investigated by measuring the pressure distributions on the blades and by visualizing the flow fields in and around the rotors with and without rotation.

TL;DR: In this article, a non-linear and unsteady actuator disc model for horizontal axis wind turbines is presented, which consists of a finite-difference solution of the axisymmetric Euler equations in a vorticity-stream function formulation.

TL;DR: In this article, an important research facility has been constructed at Texas Tech University to study wind effects on low buildings in the field, and the facility is being used to pursue research in wind loads on building surfaces, internal pressures, performance of roofing in wind environment, and ventilation and exhaust studies around the building.

TL;DR: In this paper, a large eddy simulation (LES) is used for 3D turbulent flow analysis and the results of LES agree very well with those of the wind tunnel tests, and thus the accuracy of the numerical method used here is well validated.

TL;DR: In this paper, a nonlinear model for rectangular Tuned Liquid Damper (TLD) is presented, which utilizes the shallow water wave theory with consideration of liquid damping effects.

TL;DR: In this paper, the wind and terrain parameters at the Texas Tech Wind Engineering Research Field Laboratory are described and a description of the meteorological data which has been collected so far is given.

TL;DR: In this article, the Lanchester-Prandtl lifting line theory was applied to calculate the 2D equivalent angles of attack (AOA) for the non-rotating blade (NRB) for each radial station.

TL;DR: In this article, an optimum TLD design of a tall building required for comfort and serviceability was studied, and a new simulation method was developed to predict the effect of the TLD on vibration suppression.

TL;DR: In this paper, the L.R.C.-Method is presented to describe realistically wind load effects for linear and weakly non-linear structures with quasi-static behavior, and the extreme load patterns obtained from wind tunnel tests by a conditional sampling technique.

TL;DR: In this article, the influence of storm downdrafts on the design wind speed is introduced and the computer modelling of thunderstorm downdusters using the k-ϵ turbulence model is discussed.

TL;DR: In this paper, three types of well-known turbulrnce models, namely κ-ϵ Eddy Viscosity Model (κ,ϵ EVM), Algebraic Stress Model (ASM), and Large Eddy Simulation (LES) are used.

TL;DR: In this article, extensive pressure data have been collected on a 1:100 and 1:50 model of the Texas Tech University (TTU) experimental building in a wind-tunnel simulated Atmospheric 3urface layer (ASL).

TL;DR: In this article, the transient and steady state behavior of the internal pressure following the sudden formation of a windward opening in an otherwise sealed (or almost so) building is examined.

TL;DR: In this paper, a series of experiments of the flow at yaw angles above 60° were carried out to reveal detailes of the wake structure and the transition mechanism and its effects on the aerodynamic loads.

TL;DR: In this article, the authors investigated enhanced forces and motions on a tall square building caused by proximity effects using interfering neighboring structures of different size in a low turbulence wind environment, and found that the fluctuating forces on the object building generally increased by the presence of upstream buildings of any size.

TL;DR: In this article, it was shown that there may be many sites in the United States where thunderstorm winds dominate the extreme wind climatology (for the return periods relevant to conventional structural design).

TL;DR: In this article, a system identification procedure is proposed to estimate all the derivatives simultaneously, and numerical simulations and reduction of the experimentally obtained direct derivatives are presented, indicating the reliability of the method.

TL;DR: In this article, the experimental results obtained from a boundary layer wind tunnel study for pedestrian-level winds around buildings are generalized and organized to form the knowledge base for an expert system designed for evaluating wind environmental conditions at the pedestrian level around buildings.

TL;DR: In this paper, an active control method was used to suppress the flutter of a bridge deck by providing the adequate phase and amplitude for the pitching motion of the control wings, which produced positive aerodynamic damping.

TL;DR: In this paper, a random-vibration-based procedure for estimating response of high-rise buildings is presented for enabling designers to assess the building serviceability performance, which can be used to evaluate the merit of design modifications that may include a choice of an auxiliary damping system.

TL;DR: In this article, the mean and fluctuating forces acting on a circular cylinder in cross-flow, placed near a plane surface parallel to its axis, is described. And the results showed that at subcritical Reynolds numbers periodic oscillating lift forces induced by regular vortex shedding are present at least down to relative distances from the plane, G/D, of 0.4, irrespective of the thickness of the boundary layer.

TL;DR: In this article, the authors developed peak acceleration criteria to achieve acceptable occupancy comfort in buildings in terms of peak accelerations as a function of motion frequency and return period, and the derivation of accelerations felt by an occupant in a building undergoing complex motions with significant contributions from several modes is discussed.

TL;DR: In this article, a wind tunnel model tests and theoretical analyses were conducted to investigate the effectiveness of tuned mass dampers in suppressing wind-induced tall building motion, and the analytical results indicated that the effect of the dampers can be enhanced by the inclusion of an active control system.

TL;DR: In this paper, the authors have had an oppurtunity to participate in providing suppression measure for wind induced vibrations of the new airport towers at the Haneda and Narita International Airports.

TL;DR: For a tall building of which aspect ratio is larger than 8, the resonant velocity of vortex induced vibration or the onset velocity of galloping can be within the design wind velocity as discussed by the authors.

TL;DR: In this paper, roof corner pressure data collected at several taps is analyzed for a large ensemble of records roughly covering all angles of attack, and data on area-averaged pressures and plots of instantaneous pressures over the surface area are also given.

TL;DR: In this article, the authors investigated the possible application of tuned liquid column dampers (TLCD) and TLCMD in reducing the cross-wind response of wind-sensitive structures and found that TLCD can achieve the same motion reduction level as the traditional tuned mass dampers if the parameters of the liquid dampers are properly selected.