Hydraulic Characteristic Analysis of Three Gorges Reservoir Xiangxi Bay

Abstract:

The hydrodynamic field distribution had a great influence on the expression form of water eutrophication and the process of algae bloom in lake and reservoir, especially for tributary bay of reservoir. The heterogeneity always appeared in the aquatic ecosystem which caused by the distinct difference of the hydraulic characteristic along the longitudinal direction of river. On this account, it is the guiding foundation for district comprehensive ecological improvement to understand water area hydraulic characteristic. A model was developed for the typical tributary Three Gorges Reservoir Xiangxi bay analysis using numerical method under the difference hydrodynamic factors circumstances. Finally, conclusions are summarized: The main impact factor of Xiangxi Bay hydraulic characteristic is the water level before dam which revealed the lower the level, the greater the flow rate, and with further distance increasing from the main stream ,the larger amplitude of velocity variation; moreover, the affected area by velocity of upstream water level fluctuating is ranging from transition region to the following area, the influence degree is proportional to the velocity that higher flow rate cause deeper affected degree. Results of our proposed model applications analysis procedure are given to provide the reference for establishing the scheme of ecologic regulation.

• Periodical: Advanced Materials Research (Volumes 726-731)
• Pages: 3413-3418
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.726-731.3413
• Online since: August 2013
• Authors: Meng Jun Tang, Ding Guo Jiang, Xiao Bing Luo, Hui Chao Dai
• Keywords: Hydraulic Characteristic, Hydrodynamic Field, Numerical Simulation, Subregion, Three Gorges Reservoir (TGR), XiangXi River (XXR)

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