摘要
弧底梯形渠道断面的水力计算中,正常水深的求解无显函数形式的表达公式。为避免传统低效的经验试算法、图解法等,通过对弧形底梯形明渠正常水深计算的基本方程进行数学变换,将其正常水深计算问题可归结为一非线性优化问题,再运用MATLAB遗传算法工具箱求解。结果表明,MATLAB遗传算法工具箱具有计算精度高、求解速度快、程序通用性强、直观、方便等优点。
In the hydraulic calculation of the. trapezoidal open channel with arc-shaped bed, its solution equation of normal water depth does not display the function type of expressing formula. In order to try the avoiding of the traditional low-efficient experienced checking method and illustrating method, and through the mathematics transform of the basic equation of normal depth in the trapezoidal open channel, its normal water depth calculation problem can be come down to a nonlinear optimizing problem, then MATLAB genetic algorithm toolbox is applied to find a solution. The results show that MATLAB genetic algorithm toolbox has many good properties such as high accuracy, fast computing speed, high universality procedures, intuition, convenient and etc.
出处
《科学技术与工程》
2008年第8期2269-2271,共3页
Science Technology and Engineering
关键词
弧底梯形明渠
正常水深
水力计算
MATLAB遗传算法工具箱
trapezoidal open channel with arc-shaped bed normal water depth hydraulic calculation MATLAB genetic algorithm toolbox
