2003, Volume 5, Issue 2
Strategic Study of CAE >> 2003, Volume 5, Issue 2
Numerical Computation of Flow and Pollutant Diffusion - Transportation With Non-orthogonal Curvilinear Coordinates
1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
2. Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510070, China
3. Institute of Environmental Science, Beijing Normal University, Beijing 100875, China
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Abstract
Based on depth-averaged mathematic model of flow and pollutant transportation in non-orthogonal curvilinear coordinates, the k-ε double equations´ turbulence model and the coupling arithmetic of velocity-water depth are adopted, which are applied to the numerical simulation of the flow and the contamination diffusion-transportation. The flow field and concentration of discharge both along bank and in the centerline of the meandering channel in laboratory are calculated, and the calculating results accord well with the measured data.
Keywords
curvilinear coordinates ; meandering channel ; diffusion-transportation ; IMPLEC algorithm ; concentration field
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