Wind loads on square cylinder in homogeneous turbulent flows

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Title:	Wind loads on square cylinder in homogeneous turbulent flows
Authors:	鄭啟明;Cheng, C. M.;盧博堅;Lu, Po-chien;Chen, R. H.;鄭啟明;Cheng, C. M.;Chen;R.
Contributors:	淡江大學水資源及環境工程學系
Date:	1992-10-01
Issue Date:	2011-10-23 02:10:51 (UTC+8)
Publisher:	Elsevier
Abstract:	This research project studies the turbulence effects on the wind load characteristics on a 2D square cylinder through wind tunnel model tests. The controlled parameters are turbulence intensity and length scale ratio. Total of 27 flow conditions are studied to identify the individual effect of each turbulence characteristic on wind force coefficients and force spectra. Experimental results indicate that the mean drag coefficient, Cd, decreases with respect to turbulence intensity. The fluctuating drag coefficient, Cd', increases with enhancement of turbulence intensity. The rms lift coefficient, Cl, stays invariant to the change of turbulence intensity but exhibits a significant trend of decrease with the increase of length scale ratio. Both turbulence intensity and length scale ratio are used as the basic parameters to derive the empirical models of alongwind admittance function and the acrosswind spectra.
Relation:	Journal of wind engineering and industrial aerodymanics 41(1-3), pp.739-749
DOI:	10.1016/0167-6105(92)90490-2
Appears in Collections:	[Graduate Institute & Department of Water Resources and Environmental Engineering] Journal Article

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