Title :
Simulation of flows and pollutant diffusions in bend rivers
Author :
Rong, Guiwen ; Jiang, Hong-ling
Author_Institution :
Coll. of Earth & Environ., Anhui Univ. of Sci. & Technol., Huainan, China
Abstract :
2D depth-averaged flow equations are derived for simulating flows and pollutant diffusions in boundary-fitted orthogonal curvilinear coordinate system. The k-ε turbulence model is applied to compute turbulence stresses. As for the numerical solution procedure, the Finite Volume Method with the staggered grid and the SIMPLEC solution method are used to numerically solve the governing equations that take into consideration the influence of the secondary flow phenomenon. The comparison between the obtained numerical results and the experimental data of the natural bend river shows the validity of the present numerical model.
Keywords :
finite volume methods; flow simulation; rivers; turbulence; water pollution; 2D depth-averaged flow equation; SIMPLEC solution method; bend river; boundary-fitted orthogonal curvilinear coordinate system; finite volume method; flow simulation; k-ε turbulence model; numerical solution; pollutant diffusion; secondary flow phenomenon; turbulence stress; Computational modeling; Equations; Mathematical model; Rivers; Stress; Transportation; Water pollution; bend river; boundary-fitted coordinate technology; pollutant diffusion; secondary flow;
Conference_Titel :
Water Resource and Environmental Protection (ISWREP), 2011 International Symposium on
Conference_Location :
Xi´an
Print_ISBN :
978-1-61284-339-1
DOI :
10.1109/ISWREP.2011.5893272
