Relações de resistência e de transporte para canais aluviais.

Abstract

The present work analyzes the hydraulic behavior of alluvial channels with solid transport, in terms of flow resistance and sediment transport, made together as simultaneous functions of the same basic variables. Considering the shapes of the bed as the most important factor among those that contribute to variations in resistance and transport, this work deals with these forms separately to avoid the effects of interactions. Using the dimensional analysis, the influential parameters were identified and the nature of the functions was established experimentally, using a recirculation system in the laboratory. The results demonstrate that the adopted methodology is very useful in the definition of the resistance and transport functions and that extensive investigations covering a greater range of variation of the parameters can provide solutions to the fundamental issues of flow in alluvial channels.