| 抛物线形断面渠道均匀流水深的近似计算公式 |
| |
| 引用本文： | 谢成玉,滕凯. 抛物线形断面渠道均匀流水深的近似计算公式[J]. 水电能源科学, 2012, 30(7): 94-95,172 |
| |
| 作者姓名： | 谢成玉 滕凯 |
| |
| 作者单位： | 1. 黑龙江省水利工程建设监理公司,黑龙江哈尔滨,150000
2. 齐齐哈尔市水务局,黑龙江齐齐哈尔,161006 |
| |
| 摘 要： | 针对二次抛物线形断面渠道均匀流水深计算存在的问题,采用优化拟合的方法,通过对二次抛物线形断面渠道均匀流水深计算公式的拟合,得到了表达形式简单、计算过程简捷、实用范围广、便于工程设计人员实际应用的近似计算公式。误差分析及算例计算表明,在工程实用范围内,该公式的无量纲水深最大拟合相对误差为0.257%,均匀流水深计算最大相对误差为0.513%,完全满足实际工程的水力计算及设计精度要求。
|
| 关 键 词： | 抛物线形渠道 均匀流水深 优化拟合 水力计算 |
Approximate Formula of Uniform Flow Depth for Parabolic Cross-section Channel |
| |
| XIE Chengyu and TENG Kai. Approximate Formula of Uniform Flow Depth for Parabolic Cross-section Channel[J]. International Journal Hydroelectric Energy, 2012, 30(7): 94-95,172 |
| |
| Authors: | XIE Chengyu and TENG Kai |
| |
| Affiliation: | 1.Heilongjiang Province Hydraulic Engineering Construction Overseeing Company,Harbin 150000,China; 2.Qiqihar Municipal Water Affairs Bureau,Qiqihar 161006,China) |
| |
| Abstract: | Aiming at the problem of uniform flow depth computation for quadratic parabolic cross-section channel, optimal fitting method is adopted to approximate the formula of uniform flow depth. And the approximate formula is obtained, which has advantages of simple expression, implementation easily, practical scope widely and facilitating engineer for application. The error analysis and example results show that in practical engineering, the maximum relative fitting error is only 0.257% and the maximum relative error of uniform flow depth computation is 0.513%, which fully meets the requirements of hydraulic computation and design accuracy for actual engineering. |
| |
| Keywords: | parabolic-shaped channel uniform flow depth optimal fitting hydraulic computation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
