Numerical modeling method on the movement of water flow and suspended solids in two-dimensional sedimentation tanks in the wastewater treatment plant

Article type: Research Article

Authors: Zeng, Guang-ming | Jiang, Yi-min | Qin, Xiao-sheng | Huang, Guo-he | Li, Jian-bing

Affiliations: Department of Environmental Science and Engineering of Hunan University, Changsha 410082, China

Abstract: Taking the distributing calculation of velocity and concentration as an example, the paper established a series of governing equations by the vorticity-stream function method, and dispersed the equations by the finite differencing method. After figuring out the distribution field of velocity, the paper also calculated the concentration distribution in sedimentation tank by using the two-dimensional concentration transport equation. The validity and feasibility of the numerical method was verified through comparing with experimental data. Furthermore, the paper carried out a tentative exploration into the application of numerical simulation of sedimentation tanks.

Keywords: sedimentation tank, numerical simulation, vorticity, stream function

Journal: Journal of Environmental Sciences, vol. 15, no. 1, pp. 31-37, 2003