Author(s): Marcelo Reggio; Andre Hess; AdriaN. Ilinca

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Abstract: A 3-D multiple-layer model to describe and compute free surface flows has been applied to rivers and seashore parts. Vertical convective fluxes and shear stress at the interface are kept in the x-y momentum equation. The hydrostatic pressure of the top layer, is taken into account. The flow is calculated via a finite volume numerical scheme. The solver is based on Roe's Flux Difference-Splitting (FDS) method. The spatial discretization uses triangular elements as the basic control-volume cells. Data obtained from references, analytical solutions and real configurations have been used to evaluate the performance of the proposed method. The numerical scheme has been shown to be capable of predicting the behavior of Ekman's classical surface layer or of a simple tide wave fixed on an open boundary of a rectangular domain, for example. The evolution of a tidal constituent on the St.Lawrence estuary is also presented.

DOI: https://doi.org/10.1080/00221680209499884

Year: 2002