Numerical Calculation of Flows and Long-Range Transport of Contaminants in Lowland River Reservoirs |
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| Authors: | V I Kvon D V Kvon S D Zonov V B Karamyshev |
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| Institution: | (1) Novosibirsk Branch of the Institute of Water and Environmental Problems, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090;(2) Institute of Computational Technologies, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090 |
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| Abstract: | Flows and contaminant transport in the Novosibirsk reservoir are calculated on the basis of a two-dimensional (plane) nonstationary model with Saint Venant's equations. The model allows for the presence of a large number of islands. Coefficients of horizontal exchange (dispersion) are calculated by the formula taking into account dynamic velocity at the bottom. Numerical implementation of the model employs a semi-implicit conservative finite-difference TVD scheme on a distributed grid and procedures allowing for the flow past these islands. Model examples of calculations and computation results for dynamics of long-range transport of contaminants along the Novosibirsk reservoir are given. |
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| Keywords: | lowland reservoirs contaminant plane model TVD schemes predictor– corrector schemes |
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