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A Method of Physical Fractional STEPS for Numerical Solution of Unsteady 2-D Open Channel Flows

Author(s): Liu Yuling; Zhou Xiaode

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Keywords: Boundary-fitted coordinate systems; Orthogonal curvilinear meshes; Technique of moving boundary

Abstract: This paper is concerned with the numerical solution of two-dimensional flows. The technique of boundary-fitted coordinate system is used to overcome the difficulties resulting from the complicated shape of natural river boundaries; the method of physical fractional steps is used to solve the partial differential equations in the transformed plane; and the technique of moving boundary is used to deal with the river bed exposed to water surface. Comparison between computed and experimental data shows a satisfactory agreement.

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Year: 2005

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