Field Monitoring and Numerical Simulating on Three-Dimensional Thermal Density Currents in the Estuary of Xiangxi River

Abstract:

To study the special hydrodynamic characteristic in the estuary of Xiangxi River, this project monitored water temperature and flow velocity both of Yangtze River and Xiangxi River in 2010. In addition to monitoring the water environment of two rivers, a three-dimensional (3-D) hydrodynamic model was also applied. By utilizing both field data and a numerical model, a more holistic view of the 3-D thermal density currents was discovered than by using either method alone. The results of the study showed that the invasion form of water from Yangtze River changed along with the variation of differences in water temperature between two rivers. The invasion water influenced the flow field and thermal field distributions in the estuary of XXR: The farther away from the river mouth, the thermal stratification was stronger and the water temperature horizontal distribution was more uniform. Flow velocity decreased as the distance from the river mouth increased

• Periodical: Applied Mechanics and Materials (Volumes 295-298)
• Pages: 1029-1036
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.295-298.1029
• Online since: February 2013
• Authors: Nian San Hu*, Dao Bing Ji, De Fu Liu, Yu Ling Huang, Wei Ping Yin, Chao Jun Xiong, Yu Zhang
• Keywords: Density Current, Field Monitoring, Simulating, Three Gorges Reservoir

References

[1] Z. J. Yang, D. F. Liu, J. Ma. Journal of Wuhan University (in Chinese), Vol. 45(2012), pp.1-9.

[2] Z. Yu, L. L. Wang, H. C. Dai. Resources and Environment in the Yangtze Basin (in Chinese), Vol. 20(2011), pp.84-89.

[3] L. Liu, D. F. Liu, S. B. Xiao, S. Kong, Y. Y. Chen, X. F. Fang. Environmental science(in Chinese), Vol. 33 (2012), pp.3046-3050.

[4] N. S. Hu, D. F. Liu, D. B. Ji, Z. J. Yang. Environmental Science & Technology (in Chinese), Vol. 35 (2012), pp.6-11.

[5] D. B. Ji, D. F. Liu, Z. J. Yang, S. B. Xiao. Sci China Ser G (in Chinese), Vol. 40 (2010) , pp.101-112.

[6] Q. L. Cao. Study on the Motion Characteristics of Reverse Density Currents in Xiangxi Bay of the Three-Gorge Reservoir. Three Gorges University (in Chinese), (2010).

[7] D. B. Ji, D. F. Liu, Z. J. Yang, S. B. Xiao. Journal of hydraulic engineering (in Chinese), Vol. 41 (2006), pp.691-696.

[8] Y. M. Su, D. B. Ji, D. F. Liu. Science & Technology Review (in Chinese), Vol. 26 (2008), pp.62-69.

[9] X. P. Ji, D. F. Liu, Y. L. Huang, D. B. Ji. Chinese Journal of Environmental Engineering (in Chinese), Vol. 4 (2010), pp.2687-26.

[10] Y. Zhang, D. F. Liu, D. B. Ji, Z. J. Yang, Y. Y. Chen. Environmental science (in Chinese), Vol. 33 (2012), pp.2261-2267.

[11] C. H. Meng, B. Zhao. The agricultural environment science journal (in Chinese), Vol. 26 (2007) , pp.863-867.

[12] Z. J. Yang, D. F. Liu, D. B. Ji, S. B. Xiao. Sci China Ser E-Tech Sci (in Chinese), Vol. 40 (2010), pp.358-369.

[13] Yuan. Li, D. F. Liu, S. Kong, D. B. Ji, Z. J. Yang, Y. Y. Chen. Journal of Environmental Sciences (in Chinese), Vol. 32 (2012), pp.1882-1893.

[14] L. Liu, D. F. Liu, M. J. David. Water Research, Vol. 46 (2012), pp.2121-2130.

[15] J. Ma, D. F. Liu, D. B. Ji, S. B. Xiao. Proceedings of the Yangtze River academy of science (in Chinese), Vol. 28 (2011), pp.30-34.

[16] F. A. Bombardelli, M. H. Garcia. Three-dimensional hydrodynamic modeling of density currents in the Chicago River, Illinois. Hydraulic Engineering Series Report No. 68, Civil Engineering Studies, (2001).

[17] C. B. Cook, M. C. Richmond. 2004 World Water and Environmental Resources Congress: Critical Transitions in Water and Environmental Resources Management, 2004, pp.1334-1342.

[18] C. W. Hirt, B. D. Nichols. Journal of Computational Physics, Vol. 39 (1981), pp.201-225.

[19] J. Richardson, D. A. Dixon. Modeling the Hydraulics Zone of Influence of Connecticut Yankee Nuclear Plants Cooling Water Intake Structure. American Fisheries Society Monograph, 2004, pp.513-524.

[20] FLOW3D® User's manual. Version 9. 0, Flow Science, Inc, (2005).