Research on the characteristics of wind pressures on L-shaped tall buildings

Li, Yang; Duan, Ru-Biao; Li, Qiusheng; Li, Yonggui; Li, Chao

doi:10.1177/1369433220906934

Cited by 8 publications

(7 citation statements)

References 20 publications

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“…Moreover, pressure contour on different surfaces of a building may provide an idea of pressure variation in a building (Bairagi and Dalui, 2020;Blocken et al, 2007;Mallick et al, 2020;Liu et al, 2020). It has been emphasized in various studies that the effect of pressure variation is considerably higher in the buildings having irregular plan shape (Chakraborty et al, 2014;Dalui, 2018, 2020;Gomes et al, 2005;Li et al, 2020;Sanyal and Dalui, 2020;Mukherjee et al, 2014). Stathopoulos and Zhou (1993) investigated the wind loads on an L-shaped stepped-roof building.…”

Section: Graphical Abstract 1 Introductionmentioning

confidence: 99%

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Wind flow on and around U-shaped buildings

Günaydın

2021

JEDT

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Purpose This paper presents the numerical examination of wind pressure distributions on U-plan shaped buildings having four different depth ratios (DR) as 0.5, 1, 2 and 4 over wind incidence angle (WIA) of 0°. The purpose of this study is to investigate the effect of irregular building form, DRs, distances from the reentrant corner, wind velocity values on and around wind pressure distributions of the buildings. With this aim, ANSYS Fluent 20.0 Computational Fluid Dynamics (CFD) program is used for the analysis. Design/methodology/approach Four U-shaped buildings having the same height, width and wing length but having different DR in plan were analyzed by the application of CFD package of ANSYS 20. With this purpose, wind pressure distributions on and around U-plan shaped buildings were analyzed for the wind velocity values of 2 and 5 m/s over WIA of 0°. Comprehensive results were obtained from the analyses. Findings While the change in the DR values did not create a significant change in positive pressure coefficients on A and E surfaces, negative pressure values increased as the DR decreased. The negative pressure coefficients observed on the A and E surfaces become higher than the positive pressure coefficients with the decrease in the DR. On contrary to that condition, with the decrease in the DR, G surfaces take higher positive pressure coefficients than the negative pressure coefficients. The reason for this is that the DR decreases and negative pressure values on G surface significantly decrease. The effect of the DR on the pressure coefficients is remarkable on B and D surfaces. The negative pressure coefficients on the B and D surfaces tend to increase as the DR decreases. Research limitations/implications This study focused on DRs and wind velocity values effect on pressure coefficients to limit variables. Different building wing dimensions did not take into account. Originality/value Although there are a number of studies related to wind behavior of irregular plan shaped buildings, irregular building forms have not been extensively investigated parametrically, especially in terms of the effect of DR on wind pressures. This study is therefore designed to fill this gap by analyzing impacts of various parameters like building shape with various DRs, WIA and wind velocity values on wind pressure distributions and velocity distributions on and around the building.

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Section: Graphical Abstract 1 Introductionmentioning

confidence: 99%

“…Fertelli and Balta (2017) investigated effects of wind load for the a single and two building arrangement. Li et al (2020) analyzed the characteristics of wind pressures on L-shaped tall buildings. The effects of geometric dimension on the wind pressures of L-shaped tall buildings were studied.…”

Section: Graphical Abstract 1 Introductionmentioning

confidence: 99%

Wind flow on and around U-shaped buildings

Günaydın

2021

JEDT

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“…The wind pressure coefficient Cp i ðtÞ at pressure tap i on the surface of the blade model is obtained by normalizing the measured pressures as follows (Li et al, 2020a(Li et al, , 2020b)…”

Section: Wind Pressure Coefficientsmentioning

confidence: 99%

“…The bending moment coefficients of a cantilever structure can be calculated based on the following equations (Li et al, 2020a(Li et al, , 2020b)…”

Section: Bending Moment Coefficientsmentioning

confidence: 99%

Experimental investigation of wind loads on wind turbine blade under various turbulent flows

Song

et al. 2021

Advances in Structural Engineering

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For investigation of the effects of turbulence intensity (TI) on the wind loads on wind turbine blade, a 1:20 scaled model of a typical 3D wind turbine blade is designed and used for the pressure measurement test in a wind tunnel. Five uniform flows with different turbulence intensities are simulated in the wind tunnel test. The mean and root-mean-square (RMS) wind pressure coefficients, base moment coefficients, and their power spectral densities are presented and discussed in detail. Combined with the dynamic properties of the blade structure, wind-induced displacements at the tip of the blade are calculated by the random vibration theory. The results show that the increasing of TI amplifies the aerodynamic loads on the blade in terms of RMS wind pressure coefficients and RMS bending moment coefficients. Large wind-induced displacement of the wind turbine blade may be stimulated by high TI even under the feathering condition. This article aims to further the understanding of wind loads on wind turbine blades and provide useful information for the wind-resistant design of wind farms established in regions with high turbulence levels.

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“…Li et al analyzed the characteristics of wind pressures on L-shaped tall buildings. The effects of geometric dimension on the wind pressures of L-shaped tall buildings were studied (Li et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Wind Flow Analysis on Simple plan-shaped Buildings

Günaydın¹

2021

Megaron

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Bina üzerine etkiyen rüzgar yüklerinin anlaşılması büyük önem taşımaktadır. Bu çalışma, rüzgar basınç dağılımlarını ve bina yüzeyindeki ve etrafındaki hız dağılımlarını incelemek için çeşitli rüzgar hızları altında farklı en-boy-yükseklik oranlarına sahip farklı basit plan geometrili binaların analizine odaklanmaktadır. Bu nedenle, ana değerlendirme kriterleri plan şekilleri, bina en-boy-yükseklik oranları, kat yüksekliği ve rüzgar hızıdır. Bu amaçla, ANSYS Fluent 20.0 Hesaplamalı Akışkanlar Dinamiği yazılım paket programı analiz için kullanılmaktadır. Çalışma sonucunda, genişlik/yükseklik oranları ve uzunluk/yükseklik oranlarının, bina planı şeklinin ve rüzgar hızının binanın rüzgar özelliklerini önemli ölçüde etkilediği görülmüştür. Plan geometrisindeki değişimin, binanın rüzgar altı yüzeyindeki basınç katsayılarında önemli bir etkiye sahip olmadığı tespit edilmiştir. Ancak plan şeklindeki değişiklikler veya en-boy-yükseklik oranlarındaki farklılıklar, binanın yan yüzeylerindeki basınç katsayılarında kritik etkilere sahiptir. Bina uzunluğu arttıkça yan yüzeylerdeki basınç değerleri de artmıştır. Öte yandan, bina en-boy-yükseklik oranlarının basınç değerleri üzerinde önemli etkileri olduğu görülmüştür. En kritik basınç değerleri, uzunluk oranı 6.0 ile en yüksek uzunluk oranına sahip D4 kodlu modelin rüzgar üstü yüzeyinde ve yan yüzeylerinde görülmüştür.

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Research on the characteristics of wind pressures on L-shaped tall buildings

Cited by 8 publications

References 20 publications

Wind flow on and around U-shaped buildings

Wind flow on and around U-shaped buildings

Experimental investigation of wind loads on wind turbine blade under various turbulent flows

Wind Flow Analysis on Simple plan-shaped Buildings

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