Numerical prediction of wind loads on buildings

Mathews, E.H.; Crosby, C.; Visser, J.A.; Meyer, Josua P.

doi:10.1016/0167-6105(88)90006-2

Cited by 10 publications

(2 citation statements)

References 9 publications

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“…Wind load is one of the main loads to be controlled when designing engineering structures; many scholars have studied the characteristics of wind load under different working conditions [4][5][6][7][8][9][10][11][12], including studies on the influence of mountain topography, height and distance on wind load [13][14][15][16][17][18]. The shape factor of wind load is an indispensable parameter when calculating wind load, and it can be obtained by three methods: field tests [19][20][21][22], wind tunnel tests [23][24][25][26] and numerical simulations [26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41]. Wang et al [19], Yang et al [20] and Kwon et al [22] obtained the wind pressure pattern using the wind tunnel test, while Li et al [23] and Hoxey et al [26] gained full-scale results for the wind pressure characteristic.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Mountain Height and Distance on Shape Factor of Wind Load of Plastic Tunnel

Xu,

Ren,

et al. 2023

Applied Sciences

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Due to their soft structure and covering material, plastic greenhouses are vulnerable to wind disasters, causing large-scale damage and huge economic losses. The wind load of greenhouses depends on the surface wind pressure distribution, which is different for greenhouses located in valleys from those in plain areas. To study the wind pressure distribution law for various regions of greenhouses built in valleys, mountain and greenhouse models have been built by Computational Fluid Dynamics, in which the length direction of the greenhouse is perpendicular to the valley and the wind direction is parallel to the valley. In the analysis, the verified turbulence model and grid division method are both introduced, and the effect of the height and distance of mountains is considered. According to the distribution law of wind pressure, the greenhouse’s surface is partitioned, and the variation law of the shape factor of wind load on a plastic tunnel is analyzed. Then, the calculation model for the shape factor of the wind load on the greenhouse located in a valley is proposed. The conclusions show that: (a) When the wind inflow direction angle is parallel to the valley, the distribution pattern of wind pressure on the surface of the greenhouse is similar to that on the plain regardless of the distance and height of the mountains, while the values of the wind pressure are greatly affected by the mountain height and distance. The distance between mountains has greater influence than the effect of mountain height. (b) The shape factor of wind load on the suction area of the greenhouse decreases as the distance of mountains increases, while the shape factor on the pressure area of the greenhouse increases with the increase in the distance. It can be seen that the valley effect is non-negligible. The narrower and deeper the valley, the greater the wind pressure effect. (c) When the ratio of the distance between the foot of the mountain and the greenhouse d to the height of the mountain H is less than 5, i.e., d/H < 5, the ratio of the distance to the height has a significant impact on the shape factor of wind load on the greenhouse. When d/H is close to 10, the shape factor of the wind load in the valley area is close to that in the plain area, and the effect of the ratio between the height and the distance is negligible. (d) The proposed calculation model can be used to calculate the effect of mountain height and distance on the shape factor of wind load. The research results can be used in the wind resistance design of plastic greenhouses in valley areas, and can also provide some data support for the revision of the greenhouse structural load code.

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Section: Introductionmentioning

confidence: 99%

The Influence of Mountain Height and Distance on Shape Factor of Wind Load of Plastic Tunnel

Xu,

Ren,

et al. 2023

Applied Sciences

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“…The velocity of the approaching flow was assumed to be uniform with height and normal to the predominant building dimension. The turbulence constants which had been proposed for the atmospheric boundary layer by Yeung and Kot (1985) were also used by Mathews (1987) and Mathews et al (1988) for the computation of pressure coefficients on a semicircular greenhouse. The dependence of the pressure coefficients on the Reynolds number and on the exposure factor was evaluated.…”

Section: Figmentioning

confidence: 99%

Prediction of wind effects on buildings using computational methods — review of the state of the art

Baskaran¹,

Stathopoulos²

1994

Can. J. Civ. Eng.

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. Engineering, 21, 5, pp. 805-822, 1994-10-01 Prediction of wind effects on buildings using computational methods : review of the state of the art Baskaran, B. A.; Stathopoulos, T. Advancements in computer software and hardware technology provide a new direction for analyzing engineering problems. Recently the field of wind engineering has gained significant momentum in the computer modelling process. This paper reviews the state of the art in computational wind engineering, including the finite element method, finite difference method, and control volume technique. A portion of this paper summarizes the research in this area carried out by the authors. Computations have been made for a variety of building configurations, including normal wind flow conditions for a building with different aspect ratios, and modelling wind environmental conditions around groups of buildings. The computer modelling technique may eventually enhance the design of buildings and structures against wind loading and supplement the current design practice of using building codes and standards or performing experiments in wind tunnels. Canadian Journal of CivilKey words: buildings, computer modelling, pressure, velocity, wind engineering, wind tunnels.Des progrks importants dans le dkveloppement des ordinateurs et des logiciels de modClisation ont Cte observCs dans le domaine de I'aCrodynamique et permettent de donner une nouvelle orientation a I'analyse des problkmes techniques. Cet article examine I'Ctat actuel de la technologie informatique dans ce domaine, y compris la mCthode des Clements finis, la methode des diffkrences finies et la technique du volume de contrble. Une partie de cet article rCsume la recherche effectuCe dans ce domaine par les auteurs. Des calculs ont Ct C effectuks pour une variCtC de configurations de biitiment, y compris des conditions normales d'Ccoulement du vent pour un biitiment ayant divers rapports de forme, et une modClisation des conditions environnementales autour de groupes de bgtiments a Cte rCaIisCe. La technique de modClisation informatique permettra eventuellement d'amCliorer la conception des biitiments et des structures en ce qui concerne les surcharges dues au vent. Elle constitue un complCment aux exigences contenues dans les codes et les normes du biitiment et aux essais en soufflerie.Mots cle's : b2timents, modClisation informatique, pression, vitesse, akrodynamique, souffleries.[Traduit par la rCdaction]Ca...

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The numerical prediction of air flow through and around permeable windbreaks and buildings

Crosby

Mathews

Plessis

1990

Journal of Wind Engineering and Industrial Aerodynamics

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Numerical prediction of wind loads on buildings

Cited by 10 publications

References 9 publications

The Influence of Mountain Height and Distance on Shape Factor of Wind Load of Plastic Tunnel

The Influence of Mountain Height and Distance on Shape Factor of Wind Load of Plastic Tunnel

Prediction of wind effects on buildings using computational methods — review of the state of the art

The numerical prediction of air flow through and around permeable windbreaks and buildings

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