Browse > Article
http://dx.doi.org/10.12989/was.2014.19.1.015

Partial turbulence simulation and aerodynamic pressures validation for an open-jet testing facility  

Fu, Tuan-Chun (Department of Civil and Environmental Engineering, Florida International University)
Chowdhury, Arindam Gan (Department of Civil and Environmental Engineering, International Hurricane Research Center, Florida International University)
Bitsuamlak, Girma (Department of Civil and Environmental Engineering, The University of Western Ontario)
Baheru, Thomas (Department of Civil and Environmental Engineering, Florida International University)
Publication Information
Wind and Structures / v.19, no.1, 2014 , pp. 15-33 More about this Journal
Abstract
This paper describes partial turbulence simulation and validation of the aerodynamic pressures on building models for an open-jet small-scale 12-Fan Wall of Wind (WOW) facility against their counterparts in a boundary-layer wind tunnel. The wind characteristics pertained to the Atmospheric Boundary Layer (ABL) mean wind speed profile and turbulent fluctuations simulated in the facility. Both in the wind tunnel and the small-scale 12-Fan WOW these wind characteristics were produced by using spires and roughness elements. It is emphasized in the paper that proper spectral density parameterization is required to simulate turbulent fluctuations correctly. Partial turbulence considering only high frequency part of the turbulent fluctuations spectrum was simulated in the small-scale 12-Fan WOW. For the validation of aerodynamic pressures a series of tests were conducted in both wind tunnel and the small-scale 12-fan WOW facilities on low-rise buildings including two gable roof and two hip roof buildings with two different slopes. Testing was performed to investigate the mean and peak pressure coefficients at various locations on the roofs including near the corners, edges, ridge and hip lines. The pressure coefficients comparisons showed that open-jet testing facility flows with partial simulations of ABL spectrum are capable of inducing pressures on low-rise buildings that reasonably agree with their boundary-layer wind tunnel counterparts.
Keywords
wall of wind; low-rise building; spectrum; roof; partial turbulence; pressure coefficient;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 Yamada, H. and Katsuchi, H. (2008), "Wind-tunnel study on effects of small-scale turbulence on flow patterns around rectangular cylinder", Proceeding of the 4th International Colloquium on Bluff Bodies Aerodynamics & Applications, Italy.
2 Irwin, P. (2008), "Bluff body aerodynamics in wind engineering", J. Wind Eng. Ind. Aerod., 96, 701-712.   DOI   ScienceOn
3 Katsuchi, H. and Yamada, H. (2011), "Study on turbulence partial simulation for wind-tunnel testing if bridge deck", Proceedings of the ICWE 12, Amsterdam, Netherlands.
4 Kozmar, H. (2010), "Scale effects in wind tunnel modeling of an urban atmospheric boundary layer", Theor. Appl. Climatol., 100, 153-162.   DOI
5 Leatherman, S.P., Gan Chowdhury, A. and Robertson, C.J. (2007), "Wall of Wind full-scale destructive testing of coastal houses and hurricane damage mitigation", J. Coastal Res., 23(5), 1211-1217.
6 Melbourne, W.H. (1980), "Turbulence effects on maximum surface pressures - a mechanism and possibility of reduction", Wind Eng., 1, 521-551.
7 Richards, P.J., Hoxey, R.P., Connell, R.P. and Lander, D.P. (2007), "Wind-tunnel modelling of the Silsoe Cube", J. Wind Eng. Ind. Aerod., 95, 1384-1399.   DOI   ScienceOn
8 Sangchuwong, P., Yamada, H. and Katsuchi, H. (2011), "Study on turbulence effects on flow patterns around rectangular cylinders", Proceedings of the BBAA 7, Shanghai, China.
9 Saathoff, P.J. and Melbourne, W.H. (1997), "Effects of free-stream turbulence on surface pressure fluctuation in a separation bubble", J. Fluid Mech., 337, 1-24.   DOI   ScienceOn
10 Bitsuamlak, G.T., Gan Chowdhury, A. and Sambare, D. (2009), "Application of a full-scale testing facility for assessing wind-driven-rain intrusion", Build. Environ., 44(12), 2430-2441.   DOI   ScienceOn
11 Fu, T.C., Aly, A.M., Gan Chowdhury, A., Bitsuamlak, G., Yeo, D. and Simiu, E. (2012), "A proposed technique for determining aerodynamic pressure on residential homes", Wind Struct., 15(1), 27-41.   DOI   ScienceOn
12 Gan Chowdhury, A., Simiu, E. and Leatherman, S.P. (2009), "Destructive testing under simulated hurricane effects to promote hazard mitigation", Nat. Hazard. Rev., 10(1), 1-10.   DOI
13 Gan Chowdhury, A., Bitsuamlak, G. and Simiu, E. (2010), "Aerodynamic, hydro-aerodynamic, and destructive testing", J. ICE Struct. Build., 163(2), 137-147.   DOI   ScienceOn
14 Institute for Business& Hone Safety (IBHS) (2009), "Hurricane Ike - Nature's Force vs. Structural Strength".
15 Irwin, P., Cooper, K. and Girard, R. (1979), "Correction of distortion effects caused by tubing systems in measurements of fluctuating pressures", J. Wind Egn.Ind. Aerod., 5(1-2), 93-107.   DOI
16 Tecle, A., Bitsuamlak, G., Suksawang N., Gan Chowdhury, A. and Fuez, S. (2013), "Ridge and field tile aerodynamics for a low-rise building: a full-scale study", Wind Struct., 16(4), 301-322.   DOI   ScienceOn
17 Sadek, F. and Simiu, E. (2002), "Peak non-Gaussian wind effects for database-assisted low-rise building design," J. Eng. Mech. - ASCE, 128(5), 530-539.   DOI   ScienceOn
18 Simiu, E. (2011). Design on buildings for wind, 2nd Ed., Hoboken: Wiley.
19 Simiu, E., Bitsuamlak, G., Gan Chowdhury, A., Li, R., Tecle, A. and Yeo, D.H. (2011), "Testing of residential homes under wind loads", Nat. Hazard. Rev., 12(4), 166-170.   DOI
20 Tieleman, H.W. (2003), "Wind tunnel simulation of wind loading on low-rise structures: a review", J. Wind Eng. Ind. Aerod., 91(12-15), 1627-1649.   DOI   ScienceOn
21 American Society of Civil Engineers (2010), Minimum design loads for buildings and other structures, ASCE Standard, ASCE/SEI 7-10, New York City.
22 Aly, A.M., Bitsuamlak, G.T, and Chowdhury, A.G. (2012), "Full-scale aerodynamic testing of a loose concrete roof paver system", Eng. Struct., 44, 260-270.   DOI
23 Aly, A.M., Gan Chowdhury, A. and Bitsuamlak, G. (2011), "Wind profile management and blockage assessment of a new 12-Fan Wall of Wind facility at FIU", Wind Struct., 14(4), 285-300.   DOI   ScienceOn
24 Banks, D. (2012), Measuring peak wind loads on solar power assemblies, CCP Wind Engineering, Colorado, USA.
25 Sangchuwang, P., Yamada, H. and Katsuchi, H. (2013), "Study on turbulence effects on flow fields around sharp-edged bluff bodies", J. Struct. Eng. - ASCE, 59, 627-636.
26 Yeo, D. and Gan Chowdhury, A. (2013), "A simplified wind flow model for the estimation of aerodynamic effects on small structures", J. Eng. Mech. - ASCE, 139, 367-375.   DOI
27 Huang, P., Gan Chowdhury, A., Bitsuamlak, G. and Liu, R. (2009), "Development of devices and methods for simulation of hurricane winds in a full-scale testing facility", Wind Struct., 12(2), 151-177.   DOI   ScienceOn