蛋形斷面的正常水深和臨界水深的直接計算公式
發(fā)布時間:2018-08-16 16:23
【摘要】:蛋形斷面的正常水深和臨界水深的計算公式為分段超越方程,無法直接求解。通過數(shù)學變換對正常水深和臨界水深公式化簡,最終得到充滿度x和無量綱正常水深參數(shù)H、無量綱臨界水深參數(shù)P之間的關系,利用1stopt軟件基于遺傳算法編程對給定非線性函數(shù)模型進行參數(shù)優(yōu)化擬合建立蛋形斷面正常水深和臨界水深的顯示計算公式。經(jīng)過誤差分析及實例計算,表明在較大工程常用范圍內(nèi),蛋形斷面正常水深、臨界水深的最大相對誤差分別僅為0.3691%、-0.0726%。與現(xiàn)有公式比較直接計算公式適用范圍擴大,精度更高,形式較為簡捷。研究成果可為渠道工程設計和運行管理提供可靠的理論依據(jù)和有益參考。
[Abstract]:The formula of normal water depth and critical water depth of egg section is piecewise transcendental equation, which can not be solved directly. The relationship between the filling degree x, the dimensionless normal water depth parameter H and the dimensionless critical water depth parameter P is obtained by mathematical transformation for normal water depth and critical water depth. Based on genetic algorithm (GA), the 1stopt software is used to optimize and fit the parameters of a given nonlinear function model to establish the display formulas of normal water depth and critical water depth of egg section. Through error analysis and example calculation, it is shown that the maximum relative error of critical water depth is only 0.3691 ~ 0.0726in the normal water depth of egg-shaped section in large engineering common use. Compared with the existing formula, the direct calculation formula has the advantages of wider application range, higher precision and simpler form. The research results can provide reliable theoretical basis and useful reference for channel engineering design and operation management.
【作者單位】: 中國電建集團貴陽勘測設計研究院;中國水電建設集團十五工程局有限公司;大連理工大學建設工程學部;云南建工水利水電建設有限公司;
【分類號】:TV133
本文編號:2186524
[Abstract]:The formula of normal water depth and critical water depth of egg section is piecewise transcendental equation, which can not be solved directly. The relationship between the filling degree x, the dimensionless normal water depth parameter H and the dimensionless critical water depth parameter P is obtained by mathematical transformation for normal water depth and critical water depth. Based on genetic algorithm (GA), the 1stopt software is used to optimize and fit the parameters of a given nonlinear function model to establish the display formulas of normal water depth and critical water depth of egg section. Through error analysis and example calculation, it is shown that the maximum relative error of critical water depth is only 0.3691 ~ 0.0726in the normal water depth of egg-shaped section in large engineering common use. Compared with the existing formula, the direct calculation formula has the advantages of wider application range, higher precision and simpler form. The research results can provide reliable theoretical basis and useful reference for channel engineering design and operation management.
【作者單位】: 中國電建集團貴陽勘測設計研究院;中國水電建設集團十五工程局有限公司;大連理工大學建設工程學部;云南建工水利水電建設有限公司;
【分類號】:TV133
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