| Title |
Development and Application of Depth-integrated 2-D Numerical Model for the Simulation of Hydraulic Characteristics in Vegetated Open-Channels |
| Keywords |
open-channel;vegetation;depth-integration;2-d numerical model;개수로;식생;수심적분;2차원 수치모형 |
| Abstract |
Vegetation drag tends to raise water level by retarding the flow. Previous studies have focussed on either the vertical structure modeling or the one-dimensional modeling, which can hardly be used to simulate the vegetative streams in practical engineering. Therefore, this paper presents a two-dimensional numerical model based on the depth-averaged flow equations. Vegetation drags are reflected in the flow equations, assuming non-flexible rigid cylinders. For validations, flow properties measured in both rectangular and compound channels are compared with simulated data, showing good agreement. Then, the model is applied to a reach in the Han River and the impact of floodplain vegetation on the flow is investigated. |