明渠非恒定急变流断波要素的计算  

Computation of discontinuous wave elements about unsteady rapidly varied flow in open channels

作　　者：李素霞 魏恩甲[2] 何文学[2] 李茶青[2] 

机构地区：[1]杨凌示范区开发建设有限公司 [2]西北农林科技大学水利与建筑工程学院,陕西杨陵712100

出　　处：《西北农林科技大学学报（自然科学版）》2001年第5期144-146,共3页Journal of Northwest A&F University(Natural Science Edition)

摘　　要：在数学推导的基础上 ,建立了工程实际中最为常见的棱柱体梯形断面明渠非恒定急变流断波要素的水力计算公式 ,并将其简化为关于波高的高次代数方程 ,采用二分法求其数值解。对文中提出的公式和数值解法进行了验证。结果表明 ,给出的求解公式及计算方法是正确的 ,且稳定收敛。On the basis of mathematical analysis,the hydraulic computation formulas of a discontinuous wave elements about unsteady rapidly varied flow in the prismatic trapezoidal section open channels to be widely used in the practical engineering are founded and simplified a higher algebraic equation about wave height,the numerical solution has been achieved by adopting one half method.By means of having existed data,the computational formulas and numerical method in the paper are verified.The results show that the computational formulas given in this paper and the numerical method are accurate and stable convergence,quick nicety.

关 键 词：明渠 非恒定流 急变流 断波要素 计算 

分 类 号：TV133.2[水利工程—水力学及河流动力学]