陡坡渠流水理研究

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Title:	陡坡渠流水理研究
Other Titles:	Study of open channel chute flow and its application
Authors:	許中杰;洪福生
Contributors:	淡江大學水資源及環境工程學系
Keywords:	陡坡渠流;明渠流;含氣率;曼寧係數;亂流擴散理論;Open Channel Chute Flow;Open Channel Flow;Air Concentration;Manning Coefficient;Turbulent Diffusion Theory
Date:	1992-07-10
Issue Date:	2010-01-11 16:37:37 (UTC+8)
Abstract:	陡坡渠流之特性為水流之含氣現象,其流況自上游往下游為漸變的,本研究應用許等 (1990)之量測原理及分析探討 n=0.0188之流況。配合許等(1990)之量測結果推估流況與水理參數間之相互關係。更應用標準步推法並配合白水起始點發生位置與水體斷面含氣率經驗公式,可求得陡坡含氣流之有效水深及特性水深。同時,利用統計方法與亂流擴散理論推求氣泡均勻流段含氣率於垂直底床方向之分布曲線。 The flow characteristic of open channel chute flow is the aerated phenomenon during its downward course. Application of Hsu's (1990) method for measuring air concentration at Manning's coefficient n=0 .0188 determines an empirical formula which relates the depth averaged air concentration to flow parameters. The empirical formulae together with the step method are utilized for practical applications. The analytical vertical distribution of the air concentration, which are described by two different transport characters, are in good agreement to the experimental data.
Relation:	第六屆水利工程研討會論文集(上冊)=Proceedings of 6th Conference on Hydraulic Engineering，頁251-261
Appears in Collections:	[Graduate Institute & Department of Water Resources and Environmental Engineering] Proceeding

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