水利水电科技进展Issue(3)：61-64,4.DOI:10.3880/j.issn.1006-7647.2014.03.013
抛物线形断面渠道收缩水深简化计算通式
Simplified general formula for calculating water depth in parabolic-shaped channel with contracted section
滕凯1
作者信息
- 1. 齐齐哈尔市水务局，黑龙江 齐齐哈尔 161006
- 折叠
摘要
Abstract
Conventional methods used to calculate water depth in parabolic-shaped channel with contracted section have the drawbacks of heavy computational effort and low accuracy. Additionally, the exiting simplified formulas can only be used in specific parabolic-shaped sections and are not simple enough to calculate the water depth. In order to solve these problems, the basic formula of water depth was modified by introducing the comprehensive parameters and dimensionless relative water depth. The simplified general formula was proposed by fitting a polynomial of higher degree while meeting the precision demand of engineering design. Computational results and precision analysis show that the maximum relative error of the general formula is only 0.755%, which meets the precision demand of engineering design. Thus, the simplified general formula proposed here can be used in real practical applications.关键词
收缩水深/抛物线形断面/优化拟合/简化计算Key words
contracted water depth/parabolic-shaped sections/optimal fitting/simplified calculation分类
建筑与水利引用本文复制引用
滕凯..抛物线形断面渠道收缩水深简化计算通式[J].水利水电科技进展,2014,(3):61-64,4.
