title: An Analytical Model for the Distributions of Velocity and Discharge in Compound Channels with Submerged Vegetation.
abstract: Based on the momentum transfer theory, an analytical model is proposed for the velocity and discharge distributions in compound channels with submerged vegetation on the floodplain. The partially vegetated channel was divided into three sub-regions, i.e. the main channel region, the floodplain region with submerged vegetation and the floodplain region without vegetation. For each region, the force balance relationship was established, and the momentum transfer between different regions was presented. Verification by the experimental data and comparison with the traditional method shows that the proposed method is capable of predicting for the velocity and discharge distributions in compound channels with submerged vegetation and is superior to the conventional method. The results also show that when the momentum transfer between different regions is ignored, the computed discharge will be much lager than the measured data, and the error increases with the discharge, especially in the floodplain region.
authors.affiliation: College of Civil Engineering, Fuzhou University, Fuzhou, Fujian, China; State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan, China.
authors.forename: Beihan
authors.initials: B
authors.lastname: Jiang
authors.affiliation: State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan, China.
authors.forename: Kejun
authors.initials: K
authors.lastname: Yang
authors.affiliation: State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan, China.
authors.forename: Shuyou
authors.initials: S
authors.lastname: Cao
mesh_terms: D000465:Algorithms; D017753:Ecosystem; D055868:Floods; D005618:Fresh Water; D008962:Models, Theoretical; D010839:Phytoplankton / Q000254:growth & development; D063245:Plant Development; D010944:Plants / Q000378:metabolism*