Author(s): Li Bin; Guo Yunyun; Wan Yuan Yang
Linked Author(s):
Keywords: Yangtze estuary; Hydrodynamic characteristics; Runoff; Wind direction; Diversion ratio; Average flow velocity
Abstract: This paper establishes a high-resolution mathematical model of the Yangtze Estuary based on the Danish MIKE21 hydrodynamic software. First of all, the mathematical model is used to simulate the Yangtze River estuary, and combine the measured tide level and rate to verify and determine the flow rate data. Then simulate the current field affected by different runoff (average, minimum, maximum) and 10 m / s, three different wind direction (summer wind direction in climate state, winter wind direction and forward north wind), statistically analyze the influence of different runoff and wind direction on the variation of each level. The results show that the more near the upstream, the higher the influence of runoff, the higher the influence of the upstream runoff, the influence of the runoff is similar to the change of the runoff. The change of wind direction to the tidal level in the west and south wind. While the downstream of the branch is significantly greater than that along the current direction and the west wind is larger than the south and north wind, and with the south and south wind, the velocity along the branch is smaller.
Year: 2024