Abstract: A new theoretical 1D model of compound channels flows—the exchange discharge model—is presented. The interactions between main channel and floodplains are taken into account as a momentum transfer proportional to the product ...

Abstract: In practice, dam-break modeling is generally performed using a one-dimensional (1D) approach for its limited requirements in data and computation. However, for valleys with multiple sharp bends, such a 1D model may fail ...

Abstract: The equations for two-dimensional (2D), horizontal flow are obtained by vertical depth-integration of the continuity and momentum equations. Diffusion-dispersion terms appear, containing turbulent and dispersion stresses. ...

Abstract: Experimental data are presented for flow in compound channels with symmetrically narrowing floodplains. In such a geometry, the flow behavior presents similarities with the more complex flow in a meandering compound channel, ...

Abstract: Flooding rivers usually present transition reaches where the floodplain width can significantly vary. The present study focuses on an abrupt floodplain contraction (mean angle 22°) in order to determine whether one-dimensional ...

Abstract: A method is proposed for the treatment of irregular bathymetry in one-dimensional finite volume computations of open-channel flow. The strategy adopted is based on a reformulation of the Saint-Venant equations. In contrast ...

Abstract: Common inlet design for compound-channel flumes does not ensure a proper upstream discharge distribution. As the total head in the upstream tank is the same for both main-channel and floodplain subsections, the velocity ...

Abstract: This study presents a novel, simple, but rather accurate approximation of the eigenvalues of the system formed by the Saint-Venant–Exner equations, based on the comparison between eigenvalues for the complete system and ...