Numerical Investigation of Flow Structures For Four Buildings at Different Distances

In the present study, it was aimed to compare the effects of the different distances between four buildings placed in a wind area on the surface pressure distributions and flow structures around the building. For this purpose, ANSYS-FLUENT 14.0 package program was used and analyses were performed with the RNG k-ɛ turbulence model by 3D-modelling the buildings. The distances between the buildings were initially chosen as half of the building height and then the same as the building height. The average wind velocity was determined by taking the meteorological data for Sivas into consideration and the distributions of the flow line, velocity vector, turbulence kinetic energy and surface pressure coefficients were calculated for the medium height and roof level of the buildings. It is observed from the results that the distances between the buildings significantly affected the flow structures and velocity distributions, positive pressures were effective for front surfaces in the first buildings and negative pressure areas were formed in the rear surfaces and roofs.

Keywords:

Wind effect, Tall building Wind pressure coefficient, CFD,

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[1] Hui, Y., Tamura Y., Yoshida A., Kikuchi H. (2013). Pressure and flow field investigation of interference effects on external pressures between high-rise buildings. Journal of Wind Engineering & Industrial Aerodynamics, 115:150-161, DOI: 10.1016/j.jweia.2013.01.012.
[2] Menga, F.Q., Heb, B.J., Zhub J., Zhaoc D.X., Darkod A., Zhaoe Z.Q. (2018). Sensitivity analysis of wind pressure coefficients on CAARC standard tall buildings in CFD simulations. Journal of Building Engineering, 16: 146–158. DOI: 10.1016/j.jobe.2018.01.004.
[3] Tamura, Y., Kim, C., Kikuchi, H., Hibi, K., (2014). Correlation and combination of wind force components and responses. J. Wind Eng.Ind.Aerodyn, 125: 81–93, DOI: /10.1016/j.jweia.2013.11.015.
[4] Zhaoa D.X.,, Heb B.J., (2017). Effects of architectural shapes on surface wind pressure distribution: Case studies of oval-shaped tall buildings. Journal of Building Engineering 12: 219–228, DOI: 10.1016/j.jobe.2017.06.009.
[5] Xu, X., Yang Q., Yoshida A., Tamura Y., (2017). Characteristics of pedestrian-level wind around super-tall buildings with various configurations. Journal of Wind Engineering & Industrial Aerodynamics, 166: 61–73, DOI: 10.1016/j.jweia.2017.03.013.
[6] Hubova, O., Konecna L., (2016). Experimental Determination of Wind Flowing Around Building Configuration. Procedia Engineering, 161: 1845 – 1851, DOI: 10.1016/j.proeng.2016.08.701.
[7] Wang, B., Cot, L.D., Adolphe, L., Geoffroy, S., (2017). Estimation of wind energy of a building with canopy roof, Sustainable Cities and Society, 35: 402-416, DOI: 10.1016/j.scs.2017.08.026
[8] Li, Q.S., Fu J.Y., Xiao Y.Q., Li Z.N., Ni Z.H., Xie Z.N., Gu M. (2006). Wind tunnel and full-scale study of wind effects on China’s tallest building. Engineering Structures, 28: 1745–1758, DOI: 10.1016/j.engstruct.2006.02.017.
[9] Balta M., (2016). Farklı yapılara sahip binalardaki akış yapılarının sayısal olarak incelenmesi. Cumhuriyet Üniversitesi, Fen Bilimleri Enstitüsü (Yüksek Lisans Tezi), Sivas.
[10] ANSYS 14, 2011. User Guide.
[11] Kaydok T., (2014). Farklı kesitlere sahip yüksek binalar üzerinde türbülanslı akışların sayısal incelenmesi. K.T.Ü. Fen Bilimleri Enstitüsü (Yüksek Lisans Tezi), 94s Trabzon.
[12] Hunte, S., (2010). Testing the application of CFD for building design. Delft University of Technology (Master Thesis), Netherland.

Yayın Aralığı: Yılda 4 Sayı
Başlangıç: 2017
Yayıncı: Ahmet Çalık

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