Study on Characteristics of Hydrodynamic and Pollutant Transport of the Tributary Estuary in the Three Gorges Reservoir Area

Abstract:

To further clarify the impact of construction of the Three Gorges Reservoir on its tributaries. In this study, a three-dimensional hydrodynamic model of Changshou-Fuling section of Yangtze River was developed based on EFDC. Then an analysis of the hydrodynamics and the long term mass transport behaviors under backwater effect in the Taohuaxi River and Longxi River was presented. The results show that mainstream backwater effect plays a significant role in tributary during low-water period. And distinct circulation was shown in tributary estuary. However, in high-water period, estuarine circulation area in Longxi River decreased and disappeared, while the one in Taohuaxi River is still evident. Different input action from mainstreams to tributaries has been discovered.

• Periodical: Applied Mechanics and Materials (Volumes 675-677)
• Pages: 912-917
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.675-677.912
• Online since: October 2014
• Authors: Zheng Wang*, Ying Liu, Cui Hong Qin, Wei Zhang
• Keywords: Environmental Fluid Dynamic Code (EFDC), Hydrodynamic, Pollutant Transport, Three Gorges Reservoir Area, Tributary Estuary

References

[1] HUANG Cheng. A One Dimension Water Body Eutrophication Model Computer Simulation of Chongqing Section in the Three Gorges Reservoir [D]. Chong Qing: College of Environmental, Southwest University, 2006. (in Chinese).

[2] PENG Yang; ZHANG Hong-wu. 1-D numerical simulation of unsteady flow and sedimentation transport at the Three Gorges Reservoir(TGR), [J], 2006, 21(3): 285-292. ( in Chinese ).

[3] CHEN Yongcan, SHEN Manbin, LIU Zhaowei. Characteristics of pollutant mixing zone near city outfalls in the Three Gorges Reservoir[J]. Tsinghua Univ (Sci & Tech), 2004, 44(9): 1223-1226. ( in Chinese ).

[4] LV Yibing, GONG Zhengyu, LIAN Jun et al. Status of Water Quality in the Three Gorge s after the Water Storage Period[J]. Research of Environmental Sciences. 2007, 20(1): 1-6. (in chinese).

[5] HAMRICK J M, Wu T S. Computational design and optimization of the EFDC/HEM3D surface water hydrodynamic and eutrophication models [C]. / . Next generation environmental models and computational methods. Philadelphia.: Society for Iudustrial and Applied Mathematics. 1997: 143-161.

[6] HAMRICK J M. A three-dimensional environmental fluid dynamics computer code: theoretical and computational aspects [R]. Williamsburg, Virginia: The College of William and Mary, Virginia Institute of Marine Science, (1992).

DOI: 10.47886/9781888569605.ch55

[7] ZHAO Xin, SHEN Zhenyao, Xiong Ming, et al. Key Uncertainty Sources Analysis of Water Quality Model Using the First Order Error Method[J]. International Journal of Environmental Science and Technology, 2011, 8(1): 137-148.

DOI: 10.1007/bf03326203

[8] LI Yiping, ACHARYAD K, YU Zhongbo. Modeling Impacts of Yangtze River Water Transfer on Water Ages in Lake Taihu, China[J]. Ecological Engineering, 2011, 37(2): 325–334.

DOI: 10.1016/j.ecoleng.2010.11.024