Effects of Geometry and Hydraulic Characteristics of Shallow Reservoirs on Sediment Entrapment

被引:36
作者
Zahabi, Hamidreza [1 ]
Torabi, Mohammadamin [2 ]
Alamatian, Ebrahim [3 ]
Bahiraei, Mehdi [4 ]
Goodarzi, Marjan [5 ]
机构
[1] Inst Super Tecn, Dept Civil Engn, P-1049001 Lisbon, Portugal
[2] Idaho State Univ, Dept Civil & Environm Engn, Pocatello, ID 83209 USA
[3] Khavaran Inst Higher Educ, Dept Civil Engn, Mashhad, Iran
[4] Kermanshah Univ Technol, Dept Mech Engn, Kermanshah, Iran
[5] Ton Duc Thang Univ, Fac Environm & Lab Safety, Sustainable Management Nat Resources & Environm R, Ho Chi Minh City, Vietnam
来源
WATER | 2018年 / 10卷 / 12期
关键词
shallow reservoirs; LES turbulence model; sediment; Flow-3D; LARGE-EDDY SIMULATION; NUMERICAL-SIMULATION; VELOCITY-FIELDS; FLOW;
D O I
10.3390/w10121725
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Sediment and deposition are among the main problems in dam engineering and other related fields. Because of the numerous advantages of numerical modeling, effects of different geometries of reservoirs on the flow pattern and deposition of sediments are investigated using the finite volume based Flow-3D software package. In this study, three rectangular reservoirs with different dimensional ratios are simulated using the large eddy simulation (LES) turbulence model. To validate the numerical modeling, existing experimental data is used. Results indicate that Flow-3D can accurately simulate flow and sediment deposition in the reservoirs, and the numerical data are in reasonable agreement with the experimental results. Numerical efforts showed that the amount of deposition in reservoirs is significantly dependent on the geometry. Among the modeled reservoirs, the 6 x 4 m one has the best performance. Moreover, it can be said that changing the position of the flow's inlet and outlet of the reservoir does not have a considerable effect on increasing its efficiency.
引用
收藏
页数:12
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