Numerical model of flow and pollutant transportation in non-orthogonal curvilinear coordinates

Article type: Research Article

Authors: WU, Xiu-guang | SHEN, Yong-ming | ZHENG, Yong-hong | YANG, Zhi-feng

Affiliations: State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China | Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510070, China | Institute of Environmental Science, Beijing Normal University, Beijing 100875, China

Note: [] Corresponding author. E-mail: wuxg_21cn@yahoo.com.cn

Abstract: The planar 2D k-ϵ double equations' turbulence model was adopted and transformed into non-orthogonal curvilinear coordinates. The concentration convection-diffusion was introduced to planar 2D SIMPLEC algorithm of flow in non-orthogonal curvilinear coordinates. The numerical model of pollutant transportation in non-orthogonal curvilinear coordinates was constructed. The model was applied to simulate the flow and pollutant concentration fields. In the testing concentration field, two optimal operations of contamination discharging both along bank and in the centerline at the first bend of the meandering channel were adopted. Comparison with available data showed the model developed was successful, was valuable to engineering application.

Keywords: curvilinear coordinates, diffusion-transportation, SIMPLEC algorithm, concentration fields, meandering channel

Journal: Journal of Environmental Sciences, vol. 16, no. 2, pp. 293-296, 2004