期刊名称：Journal of Environmental Science and Water Resources
印刷版ISSN：2277-0704
出版年度：2013
卷号：2
期号：2
页码：027-039
出版社：Wudpecker Journals
摘要：This paper reports a q uasi 3D numerical simulation in a meandering river reach of the Yellow River , aiming to develop a tool fo r modeling turbulent flows and pollutant transport in complex natural waters. The recently built depth - averaged two - eq uation tu rbulence . ~ ~ . k model , together with . ~ ~ . k and w k ~ ~ . models , were used to close non - s implified quasi 3 D 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 f or steady flow and transport computation, the processes of contaminant inpouring and plume development, caused by the side - discha rge from a tribytary , also have been investigated numerically . T he used three closure approaches are suitable for modeling st ro ng mixing turbulence. The established . ~ ~ . k model with higher order of magnitude of transported variable . ~ provides a possibility to elevate the computational precision. Based on the developed mathematical model , a C FD ( C omputational F luid D ynamics ) software, namely Q3drm1.0, was developed . T his numerical 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 discharge situations: side - discharge, point - source discharge/point - sink, and area - source discharge from the slope along bank. I n this article , the study of side - discharge is presented only
