Math Modeling of Mixing Zones in River Systemsby Seok S. Park, Rutgers Univ, New Brunswick, NJ, USA,
Christopher G. Uchrin, Rutgers Univ, New Brunswick, NJ, USA,
Abstract: A numerical mixing zone model was developed utilizing an implicit finite difference method with a weighted numerical scheme. The model was based on the two-dimensional advection-dispersion equation formulated with the stream tube concept. To reduce the field data requirements, cross-sectional profiles of the stream geometry and velocity distribution were simulated using the typical flow condition of a shallow river and the resistance equation. The applicability of the model was tested through simulations of mixing zones resulting from municipal wastewater effluent discharges. Conductivity was used as a conservative tracer.
Subject Headings: Two-dimensional models | Rivers and streams | Mathematical models | Mathematics | Hydrologic models | River systems | Numerical models | Numerical methods
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