摘要
通过对圆形断面临界流方程进行数学变换,得到圆形断面临界水深的近似计算公式,在工程常用范围内其最大相对误差小于0.86%。与现有的计算公式进行比较,结果表明该近似计算公式形式简单,计算精度高,使用方便。
An approximate formula for calculating the critical water depth at circular cross section was derived from mathematical transformation of the critical flow equation. The maximum relative error, at the common range of engineering, is less than 0.86%. Comparison with existing formulas shows that this approximate formula has simple form and high precision, and can be conveniently applied.
出处
《水利水电科技进展》
CSCD
北大核心
2008年第2期62-64,共3页
Advances in Science and Technology of Water Resources
基金
国家自然科学基金(50579065)
西北农林科技大学"青年学术骨干支持计划"
西北农林科技大学优秀科技人才基金(04ZR014)
关键词
圆形断面
临界水深
近似计算
circular cross section
critical water depth
approximate calculation
