摘要
根据多元函数微分学理论分析研究了圆弧底渠道水力最佳断面问题,推导得到的结果表明,其极值条件仅与半弦长、弦至水面间的距离h1、边坡系数m有关,且其相互间的关系由公式:bm-h1=0唯一确定。从而,水力最佳断面可一次性设计完成。
According to the theoretical analysis of the multi-element function by the differential calculus,the conclusion has been deduced.It showed that its extrene value condition was only related to the .semi -chord length,the distance between chord to water surface h1 and the side slope. Its interreaction was determined only by following equation: bm-h1 =0 thereby, the best hydraulic cross section design could be completed only once time.
出处
《沈阳农业大学学报》
CAS
CSCD
1996年第3期245-247,共3页
Journal of Shenyang Agricultural University
关键词
圆弧底
渠道
水力最佳断面
极值条件方程
灌溉
Cannal with radial bed
Best hydraulic cross section
Equation of extreme value condition