Showing papers in "Journal of Wind Engineering and Industrial Aerodynamics in 2021"

TL;DR: In this paper, a technique for estimating two commonly used typhoon wind field parameters, i.e., R m a x, s and B s using the observed wind information from the best track dataset coupled with a semi-analytical wind field model, is described.

TL;DR: In this paper, the effects of tapering on aerodynamic, aero-elasticity, and fluid-structure interaction of buildings have been investigated through wind tunnel tests, specifically considering different wind attack angles, wind velocities, and structural rigidities.

TL;DR: In this article, higher-order dynamic mode decomposition (HODMD) was applied to reveal the spatial-temporal evolution characteristics of fluctuating wind pressures on building surfaces.

TL;DR: In this article, a 3D computational fluid dynamics numerical model of the train-tunnel-bridge-wind barrier is established based on the delayed detached eddy simulation turbulence model and porous media theory.

TL;DR: It was found that the GBRT model can be an effective and economical method to study crosswind vibrations of rectangular cylinders and hence supplement traditional wind tunnel tests and numerical simulation techniques.

TL;DR: Based on unsteady simulations and decomposed sliding mesh technology, train aerodynamic and dynamic behaviors near an elongated hillock beside a windbreak under a crosswind were analyzed as discussed by the authors.

TL;DR: In this article, the effect of cross passage on aerodynamic characteristics of evacuated tube transportation is simulated by overset mesh technology, and the results show that there is a linear relationship between the length of the disturbed region of normal shock wave and running time.

TL;DR: In this article, the authors investigated the thermal smoke back-layering and critical velocity of the highway tunnel in alpine gorge area with canyon cross wind, and the experimental results indicated that the smoke backlayering length decreases with the increasing longitudinal ventilation velocity.

TL;DR: In this paper, a detailed numerical study has been carried out to investigate the effects of leadingedge protuberance as a novel flow-separation control-technique for vertical-axis-windturbine (VAWT).

TL;DR: It is demonstrated that clustering algorithms are a powerful tool for recognizing patterns hidden in complex pressure fields and flow fields, and a promising machine-learning technique is proposed that can perfectly complement traditional building methods using wind engineering.

TL;DR: To investigate the relative severity and dependency between the damages, a carefully calibrated archetype 45-story steel building located in Miami, FL, and subject to hurricane winds is studied and damage metrics are estimated.

TL;DR: The multilayer perceptron and support vector regression models trained with synthetic and full-scale measured data from the Hardanger Bridge achieved very high accuracy with normalized root mean square errors and are therefore suitable for efficient surrogate modeling.

TL;DR: In this article, a negative stiffness damped outrigger (NSDO) system was proposed for multi-hazard vibration reduction of high-rise buildings in resisting earthquakes and winds.

TL;DR: In this article, the authors explored the dependence of the wake dynamics on the prism cross-sectional aspect ratio of a wall-mounted finite-length rectangular prism at a Reynolds number Re −1−1.

TL;DR: In this article, a series of tests were conducted in a model-scale tunnel to investigate the influence of canyon cross wind on smoke temperature and movement characteristics of tunnel fires, including temperature distribution below ceiling, smoke back-layering length, and smoke stratification characteristics.

TL;DR: This research proves that there are opportunitie to integarte the architectural and energy applications of smart double skin facades with wind-reducing effects as a promising solution for overcoming existing challenges for controlling wind-induced load and response of tall buildings.

TL;DR: In this paper, the effect of domain width, domain height and upstream and downstream domain lengths on the wind flow and pollutant dispersion within a generic 2.5D street canyon with spanwise periodic boundary conditions was investigated.

TL;DR: In this article, an ultrasonic anemometer installed on a catwalk and bridge tower was used to perform statistical analysis of the wind field of deep-cut gorges and study the influence of wind direction on the wind characteristic parameters.

TL;DR: In this paper, the effects of three wind profiles on second-generation benchmark building, i.e., conventional wind profile (CWP), two twisted wind profiles (TWP15 and TWP30) with maximum twisted angle (MTA) of 15°and 30°, are investigated by large eddy simulation.

TL;DR: In this article, the impact of different urban block typologies in urban pollutant dispersion was investigated using the computational fluid dynamics technique: single-block, detached buildings, central courtyard, inner courtyards, and row.

TL;DR: In this paper, the impact of the piston effect on distribution of particles generated due to train braking was investigated using a 3D computational model of subway tunnels and stations with a side-platform.

TL;DR: In this paper, the effect of ribs on the mean along-wind force is studied by checking the wake vortex length L and local wake width W. The authors found that the vertical ribs attenuate the turbulence intensity for both u and v components in the separated shear layer and the near wake region, the reduction of turbulence will eventually reduce the fluctuating wind pressure on the side and leeward surfaces.

TL;DR: In this article, the impacts of unstable thermal stratification on airflow and pollutant dispersion around a rectangular building are investigated through large eddy simulation (LES), in which a wide range of Richardson numbers (−1.5−0) is considered.

TL;DR: In this article, a piezoelectric dual synthetic jet actuator (DSJA) was installed at the leading edge of the free end for generating the DSJ, which can be adjusted through the driving voltage and driving frequency.

TL;DR: In this article, a computationally efficient synthetic inflow turbulence generation technique with explicitly defined two-point flow statistics is proposed based on the spectral representation method, which is imposed on the generated turbulence through a posteriori procedure embedded in the pressure-implicit with splitting of operators (PISO) solver of OpenFOAM.

TL;DR: In this paper, the aerodynamic characteristics of a circular cylinder with and without ice accretion (without icicles) were studied via wind tunnel tests (including simultaneous multi-pressure and force measurements) for Reynolds numbers (Re) of 1.29 − − − 105 − 1.27 − − 106.

TL;DR: In this article, large-eddy simulations are performed to elucidate the effects of wind shear coefficients (WSCs) and upstream turbulence intensities (TIs) on the complex wind flow fields over the simplified 3-D hills.

TL;DR: In this paper, the capability of large eddy simulations (LES), Improved Delayed Detached Eddy Simulations (IDDES) and Reynolds-Averaged Navier-Stokes Equations (RANS) to predict the lateral asymmetry or symmetry of the near-wake flows behind the notchback Ahmed body is investigated.

TL;DR: Wang et al. as mentioned in this paper developed a novel WFLO framework based on an improved Gaussian wake model, and the proposed method was applied to three ideal wind farms and one real wind farm (Horns Rev 1 wind farm) for layout optimization.

TL;DR: In this article, the effects of mass ratio, spacing ratio and helical wires on the wake galloping of tandem circular cylinders are investigated by LES turbulence model at the subcritical Reynolds number regime.