|Water Science and Engineering 2019, 12(3) 179-187 DOI: https://doi.org/10.1016/j.wse.2019.08.002 ISSN: 1674-2370 CN: 32-1785/TV|
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Analysis of wave clipping effects of plain reservoir artificial islands based on MIKE21 SW model
Yan Xiang a,b,c,*, Zhi-min Fud, Ying Meng a,b, Kai Zhang a,b,c, Zheng-fei Cheng a
a Dam Safety Management Center of Ministry of Water Resources, Nanjing Hydraulic Research Institute, Nanjing 210029, China
Plain reservoirs are shallow, and have low dams and widespread water surfaces. Therefore, wind-wave-induced damage to the dam is one of the important factors affecting the safety of the reservoir. To improve upon unsatisfactory plain reservoir wave-clipping schemes, a numerical method is proposed to predict and analyze waves in the reservoir in the presence of artificial islands, constructed from dredged sediment. The MIKE21 SW model is applied to a specific plain reservoir for finding the optimal artificial island parameters. The simulated wave height attenuation results are seen to agree well with empirically predicted values. Thus, the validity and reliability of the numerical model are established. Artificial islands at suitable locations in the reservoir can attenuate the wave heights by approximately 10% to 30%, which justifies the efficacy of the clipping scheme making use of dredging and island construction.
|Keywords： Plain reservoirs Sediment deposition Clipping via island construction MIKE21 SW Numerical simulation|
|Received 2019-04-22 Revised 2019-07-09 Online: 2019-09-30|
This work was supported by the National Key Research and Development Program of China (Grants No. 2016YFC0401603, 2016YFC0401605, and 2016YFC0401607), and the Central Public-interest Scientific Institution Basal Research Fund (Grants No. Y717012 and Y718007).
|Corresponding Authors: Yan Xiang|
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