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- W2497899186 abstract "This paper reports a quasi 3D numerical simulation in a curved river reach of the Solimoes River near The Anama City, Brazil, aiming to develop a numerical tool for modeling turbulent flows and pollutant transport in complex natural waters. The recently built depth-averaged two-equation turbulence model, together with and models were used to close non-simplified quasi 3D hydrodynamic fundamental governing equations. The discretized equations were solved by advanced multi-grid iterative method under non-orthogonal body-fitted coarse and fine two-levels’ grids with collocated variable arrangement. Except for steady flow and transport computation, the processes of contaminant inpouring and plume development, caused by the side-discharge from a tribytary, also have been investigated numerically. The used three closure approaches are suitable for modeling strong mixing turbulence. The established model with higher order of magnitude of transported variable provides a possibility to elevate the computational precision. Based on the developed hydrodynamic model, a CFD (Computational Fluid Dynamics) software, namely Q3drm1.0, was developed. This tool focuses on the refined simulations of the steady and unsteady problems of flow and temperature/contaminant transports in complicated computational domains with the strong ability to deal with different types of discharges: side-discharge, point-source discharge/point-sink, and area-source discharge from the slope along bank. In this paper, only the study of side-discharge is presented." @default.
- W2497899186 created "2016-08-23" @default.
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- W2497899186 date "2014-09-29" @default.
- W2497899186 modified "2023-09-27" @default.
- W2497899186 title "Numerical simulations of flow and contaminant transport using multiple depth-averaged two-equation turbulence models in the Solimões river near the Anamã city" @default.
- W2497899186 doi "https://doi.org/10.14196/sjes.v3i5.1704" @default.
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