Wind loads on flat roofs of low-rise buildings with rounded leading edge

Dong, Xin Luna; Jiemin, Ding; Jiao, Changke

doi:10.1080/02533839.2018.1559766

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…Tominaga et al [3], Ozmen et al [4], and Xing et al [5] used gable-roof buildings as their research object and analyzed the influence of roof slope on the separation-reattaching flow and wind-load distribution through wind tunnel experiments and numerical simulations. Mahmood [6] and Dong and Ding [7] studied the influence of the chamfering effect of the front windward edge on the wind load. They found that a chamfered roof can reduce the overall wind load of the roof, but it magnifies the local wind pressure at the windward edge.…”

Section: Introductionmentioning

confidence: 99%

LES Analysis of the Effect of Snowdrift on Wind Pressure on a Low-Rise Building

Liu

Chen

et al. 2022

Buildings

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This paper presents a comparative study of the distribution of wind pressure acting on a low-rise building roof with or without snowdrift through the Large-Eddy simulation (LES) method. Firstly, based on previous wind-blowing snow experiments, the stable snowdrift models were obtained by reverse technique. Secondly, the methodology of LES numerical simulation was introduced, where sensitivity analyses were conducted to determine a more reasonable grid configuration and data sampling time. Meanwhile, the numerical validation was also verified by comparing it with the previous PIV database. Finally, the wind pressure acting on the building’s roof with or without snowdrift were systematically compared and analyzed. It was found that the snow cover significantly restrains the size of the separation bubble and makes is lcoated earlier on the roof, which leads to the increasing passing velocity in the region near the roof. Meanwhile, the area-averaged pressure coefficient in the windward region (x/H < 0.5) for the snowdrift roof will be significantly amplified, especially for the fluctuating pressure, the maximum value of the Relative Difference even reaches 40%. Additionally, according to the POD analysis, the snowdrift causes the fluctuating wind energy to concentrate near the windward side of the roof. Therefore, more attention should be paid to the wind pressure in the windward region when the snowdrift is formed on the roof.

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Section: Introductionmentioning

confidence: 99%

LES Analysis of the Effect of Snowdrift on Wind Pressure on a Low-Rise Building

Liu

Chen

et al. 2022

Buildings

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The effects of edge radius on wind tunnel tests of low-rise buildings

Kwan

Kopp

2021

Journal of Wind Engineering and Industrial Aerodynamics

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Computational Simulation of Wind Loads on Three Curved Eave Models with Different Height-Width Relationships

Teixeira,

Júnior,

Campos

2024

Wseas Transactions on Fluid Mechanics

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This work deals with the effects of wind loads on two industrial shed models with curved eaves aspect of different height-to-width ratios. Using Ansys Workbench software, the external pressure coefficients for the entire roof by applying refinement levels were determined. Also were studied the quality of the unstructured and tetrahedral grid according to recommendations to ensure greater efficiency in the simulation results. The results generated provided evidence that the wind in the transverse direction is more damaging in the windward region: for a wind at 45º the most critical region appeared both windward and leeward in the model with a ratio of h/b=0.5 (Model 1) and to windward in the models with a ratio of h/b=1 (Model 2) and h/b=1.5 (Model 3). The leeward suctions increased due to the reduction in the height-width ratio considering a wind direction of 45º. The increase in this ratio intensified the values of the external pressure coefficients in the windward region for the 90º wind direction.

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Wind loads on flat roofs of low-rise buildings with rounded leading edge

Cited by 3 publications

References 19 publications

LES Analysis of the Effect of Snowdrift on Wind Pressure on a Low-Rise Building

LES Analysis of the Effect of Snowdrift on Wind Pressure on a Low-Rise Building

The effects of edge radius on wind tunnel tests of low-rise buildings

Computational Simulation of Wind Loads on Three Curved Eave Models with Different Height-Width Relationships

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