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

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.

关键词： open channel optimal hydraulic sections comparison

作者: Lv Hongxing Liu Huanfang Zhang Xinyan

作者单位: College of Water Resources and Architectural Engineering,Northwest Agriculture & Forestry Universit College of Water Resources and Architectural Engineering,Northwest Agriculture & Forestry Universit College of Water Resources and Architectural Engineering,Northwest Agriculture & Forestry Universit

会议类型: 国际会议

会议名称: International Conference on Effective Utilization of Agricultural Soil & Water Resources and Protection of Environment and the 4th Annual Academic Conference of Chinese Society of Agricultural Soil and Water Engineering

会议地点: 南京

会议语种:英文

页码: 237-242

在线出版日期: 2006-08-16（万方平台首次上网日期，不代表论文的发表时间）