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Comparison of Optimal Hydraulic Sections for Five-kinds of Open Channels

机译:五类明渠最佳水力断面比较

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摘要

An optimal hydraulic section is the section that conveys a given discharge with minimum cross sectional area.This paper solves hydraulic sections of "U",catenary,parabolic,trapezoidal and rectangular shaped channels.The flow area,wetted perimeter and hydraulic radius are expressed as functions of nQ/√i for five-kinds of open channel section shapes.According to optimal order of sections,results indicate that "U",catenary;parabolic,trapezoidal with side slope less than 4/3,rectangular and trapezoidal greater than 4/3 respectively.
机译:最佳的水力工段是在最小横截面积下输送给定排水量的工段。本文解决了“ U”形,类别,抛物线形,梯形和矩形通道的水力工段。流量面积,湿润周长和水力半径表示为nQ /√i函数对五种明渠断面形状的影响。根据断面的最佳顺序,结果表明,“ U”,类别;抛物线,梯形,边坡小于4/3,矩形和梯形大于4 / 3。

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