Development of Study on Numerical Simulation of Meandering River Flow and Bed Deformation
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Abstract:
River flow and bed deformation in meandering streams are more complex than those in straight rivers, which is one of the main subjects in river dynamics. In recent years, with the rapid development of computer hardware and software and the appearance of efficient numerical methods as well, numerical simulation of meandering river flow and sediment transport develops with greater progress. This paper summarized the properties of meandering flow, such as the lateral slope of water surface, transverse circulation, average velocity along vertical line, and bed shear stress, and the basic characteristics of sediment transport. In addition, the research progress on the two-dimensional and three-dimensional flow models and bed evolution models in meandering streams were reviewed. The exiting problems of current numerical simulation on meandering river flow and sediment transport were pointed out and some possible solutions for future research in meandering river flow and bed deformation were proposed.
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