Method for calculating resistance coefficient of watercourse containing submerged vegetation

• Main Authors: MI BOYU, DAI HUICHAO, ZHAI RAN, LIU ZHIWU, XU ZHI, WANG WEIJIE, FENG HAOCHUAN, ZHAO HANQING, JIA FENGCONG, ZHANG CHENGXIAO, JIANG MINMIN, JIANG DINGGUO
• Format: Patent
• Language: Chinese; English
• Published: 24.12.2021
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a method for calculating a resistance coefficient of a watercourse containing submerged vegetation, and the method comprises the steps: firstly, building an analytical formula of a Darcy-Welthbach coefficient f corresponding to the watercourse containing submerged vegetation through theoretical analysis; then, for an analytical formula of f, analyzing the relation between each subitem of the formula and a vegetation factor, and determining a dimensionless vegetation factor which affects f; collecting a large amount of test data under different conditions, and establishing a quantitative relationship between f and a vegetation factor through a genetic algorithm; finally, the quantitative relation between n and the vegetation factors is obtained by combining the analytic relation between the Manning coefficient n and the Darcy-Weistbach coefficient f; according to the method for calculating the resistance coefficient of the watercourse containing submerged vegetation, the values of f and