Overview
Understanding sediment transport is essential for managing the changing riverbed of major rivers. This study developed a three-dimensional flow-sediment model of the Wuhan portion of the Yangtze River using the Environmental Fluid Dynamics Code (EFDC).
Model Setup
The model was calibrated and validated using daily measurements of water surface elevation and suspended sediment concentration data collected from June 1 to September 30, 2004. The calibrated model was then used to simulate mobile sediment on the riverbed during the high water period of the Yangtze River.
Key Findings
The results indicate that erosion is the main issue along this reach, with maximum erosion of 0.27 m occurring at the banks of Tian Xingzhou. A suspended sediment concentration analysis for the Han Kou Hydrologic Station section showed that concentrations increased from the left bank to the right bank across the channel.