Hydraulically optimum flat-bottomed power-law channel
(0) It is difficult to optimize the shape of an open-channel for low construction, high hydraulic efficiency and the soil and rock slope stability.This research considers a new channel which is termed a flat-bottomed power-law channel on the basis of the power-law channel and has a bottom width and power-law side walls.Based on the theory of a hydraulically optimum section, an optimum flat-bottomed power-law channel design and hydraulic calculation are considered by using Lagranges method of undetermined multipliers.Shapes and parameters for hydraulically optimum flat-bottomed power-law channels are obtained under different conditions with trial procedures and numerical methods.Hydraulically optimum fiat-bottomed power-law sections are more hydraulically efficient than common optimum rectangular, trapezoidal and power-law sections.Ranges of exponent m and side slope Z are provided to guarantee soil and rock slope stability and a minimum wetted perimeter.This study may provide a useful reference for channel design.
Flat-bottomed power-law sections hydraulically optimum section open channels Lagranges method of undetermined multipliers
Mingdeng Zhao Zilong Fan Haitao Jia
State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
国际会议
The Second Conference of Global Chinese Scholars on Hydrodynamics(第二届全球华人水动学学术会议)
江苏 无锡
英文
997-1003
2016-11-11（万方平台首次上网日期，不代表论文的发表时间）