Wind loads on square cylinder in homogeneous turbulent flows

淡江大學機構典藏 > 工學院 > 水資源及環境工程學系暨研究所 > 期刊論文 > Item 987654321/67884

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题名:	Wind loads on square cylinder in homogeneous turbulent flows
作者:	鄭啟明;Cheng, C. M.;盧博堅;Lu, Po-chien;Chen, R. H.;鄭啟明;Cheng, C. M.;Chen;R.
贡献者:	淡江大學水資源及環境工程學系
日期:	1992-10-01
上传时间:	2011-10-23 02:10:51 (UTC+8)
出版者:	Elsevier
摘要:	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.
關聯:	Journal of wind engineering and industrial aerodymanics 41(1-3), pp.739-749
DOI:	10.1016/0167-6105(92)90490-2
显示于类别:	[水資源及環境工程學系暨研究所] 期刊論文

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