Wind Pressure Coefficients on Pyramidal Roof of Square Plan Low Rise Double Storey Building

Document Type : Original Article


1 Ph.D. Scholar, Civil Engineering Department, National Institute of Technology, Hamirpur, Himachal Pradesh, India

2 Assistant Professor, Department of Civil Engineering, National Institute of Technology Hamirpur, Himachal Pradesh-177005, India


The present study demonstrates the pressure variation due to wind load on a two storey building with a square plan and a pyramidal roof through CFD simulation. Past cyclone reports and other related post-disaster studies have shown loss of lives and extensive property loss mostly in the cyclone prone regions of India. Post-disaster studies reveal that a pyramidal roof has much better chances of survival in comparison with other roof shapes. ANSYS Fluent has been used for the simulation and ANSYS CFD-Post has been used for observing the wind pressure on building roofs. The simulations are performed using the realizable k-ε turbulent model by considering grid sensitive analysis and validation with previously published wind tunnel experminetal measurements. The present study includes wind behaviour around the building model with different roof slopes. Comparisons of pressure coefficients are shown for five wind incidence angles to study the effect of wind on the building. Results indicate that both maximum positive and maximum negative wind pressure coeffiecients increase with increasing roof slopes. The results of the study is helpful in understanding the damage caused on the roof surface during the extreme wind condition.


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[1]     B. Mintz, A. Mirmiran, N. Suksawang, A. Gan Chowdhury, Full-scale testing of a precast concrete supertile roofing system for hurricane damage mitigation, J. Archit. Eng. 22 (2016) 1–12. doi:10.1061/(ASCE)AE.1943-5568.0000209.
[2]     W.L. Coulbourne, E.S. Tezak, T.P. McAllister, Design Guidelines for Community Shelters for Extreme Wind Events, J. Archit. Eng. 8 (2002) 69–77. doi:10.1061/1076-0431.
[3]     A.K. Roy, A. Aziz, J. Singh, Wind Effect on Canopy Roof of Low Rise Buildings, Lnternational Conf. Emerg. Trends Eng. Lnnovations Tech Nol. Manag. 2 (2017) 365–371.
[4]     A.K. Roy, A. Sharma, B. Mohanty, J. Singh, Wind Load on High Rise Buildings with Different Configurations : A Critical Review, Lnternational Conf. Emerg. Trends Eng. Lnnovations Tech Nol. Manag. 2 (2017) 372–379.
[5]     A.K. Roy, J. Singh, S.K. Sharma, S.K. Verma, Wind pressure variation on pyramidal roof of rectangular and pentagonal plan low rise building through CFD simulation, Int. Conf. Adv. Constr. Mater. Struct. (2018) 1–10.
[6]     A.K. Roy, M.M. Khan, CFD Simulation of Wind Effects on Industrial Chimneys, in: Civ. Eng. Conf. Sustain., 2016.
[7]     B. Blocken, P. Moonen, T. Stathopoulos, J. Carmeliet, Numerical Study on the Existence of the Venturi Effect in Passages between Perpendicular Buildings, J. Eng. Mech. 134 (2008) 1021–1028.
[8]     T. Van Hooff, B.C.C. Leite, B. Blocken, CFD analysis of cross-ventilation of a generic isolated building with asymmetric opening positions : Impact of roof angle and opening location, 85 (2015).
[9]     D. Kuzmin, Computational fluid dynamics, Wikipedia. (2018).
[10]   Margaret Rouse, Computational fluid dynamics, TechTarget - WhatIs.Com. (2014).
[11]   T.D. Canonsburg, ANSYS Fluent Tutorial Guide, 15317 (2013) 724–746.
[12]   S. Liu, W. Pan, H. Zhang, X. Cheng, Z. Long, Q. Chen, CFD simulations of wind distribution in an urban community with a full-scale geometrical model, Build. Environ. 117 (2017) 11–23.
[13]   A.K. Bairagi, S.K. Dalui, Optimization of interference effects on high- rise building for different wind angle using CFD simulation Optimization of Interference Effects on High-Rise Buildings for Different Wind Angle Using CFD Simulation, Electron. J. Struct. Eng. 14 (2015) 39–49.
[14]   S. Lal, Experimental, CFD simulation and parametric studies on modified solar chimney for building ventilation, Appl. Sol. Energy. 50 (2014) 37–43.
[15]   J. Revuz, D.M. Hargreaves, J.S. Owen, On the domain size for the steady-state CFD modelling of a tall building, Wind Struct. An Int. J. 15 (2012) 313–329.
[16]   S.K. Verma, A.K. Roy, S. Lather, M. Sood, CFD Simulation for Wind Load on Octagonal Tall Buildings, Int. J. Eng. Trends Technol. 24 (2015) 211–216.
[17]   B. Blocken, J. Carmeliet, T. Stathopoulos, CFD evaluation of wind speed conditions in passages between parallel buildings — effect of wall-function roughness modifications for the atmospheric boundary layer flow, J. Wind Eng. Ind. Aerodyn. 95 (2007) 941–962.
[18]   A.M. Aly, J. Bresowar, Aerodynamic mitigation of wind-induced uplift forces on low-rise buildings: A comparative study, J. Build. Eng. 5 (2016) 267–276.
[19]   W. Ding, Y. Uematsu, M. Nakamura, S. Tanaka, Unsteady aerodynamic forces on a vibrating long-span curved roof, Wind Struct. 19 (2014) 649–663.
[20]   Y. Ozmen, E. Baydar, J.P.A.J. Van Beeck, Wind flow over the low-rise building models with gabled roofs having different pitch angles, Build. Environ. 95 (2016) 63–74.
[21]   S. Chakraborty, S.K. Dalui, A.K. Ahuja, Experimental Investigation of Surface Pressure on ‘ + ’ Plan Shape Tall Building, Jordan J. Civ. Eng. 8 (2014) 251–262.
[22]   R. Li, A.G. Chowdhury, M. Asce, G. Bitsuamlak, K.R. Gurley, M. Asce, Wind Effects on Roofs with High-Pro fi le Tiles : Experimental Study, J. Archit. Eng. 20 (2014) 1–11.
[23]   A.S. Tecle, G.T. Bitsuamlak, A.G. Chowdhury, Opening and Compartmentalization Effects of Internal Pressure in Low-Rise Buildings with Gable and Hip Roofs, J. Archit. Eng. 21 (2015) 04014002.
[24]   A.K. Roy, A.K. Ahuja, V.K. Gupta, Variation of wind pressure on Canopy-Roofs, Int. J. Earth Sci. Eng. 03 (2010) 19–30.
[25]   A.K. Roy, A. Aziz, S.K. Verma, Influence of surrounding buildings on canopy roof of low-rise buildings in ABL by CFD simulation, in: Adv. Constr. Mater. Struct., Roorkee, 2018.
  • Receive Date: 17 August 2018
  • Revise Date: 26 January 2019
  • Accept Date: 10 April 2019
  • First Publish Date: 10 April 2019