Simulação numérica de confluências utilizando a técnica de canais paralelos

Abstract

This work points to a study of confluences in flows in the rivers using the technique of Parallel Channels (TCP), a one-dimensional hydrodynamic model of numerical simulation that has as a tool for calculating the Standard Step Method (STM). The permanent flows were observed in canals and rivers varied, being associated with the equations that involve the numerical simulations in order to obtain a behavior that could represent significant changes in water flow. Initially took the characterization of a test model from confluent channels elaborating a language in Visual Basic for Applications (VBA). Then, through platforms, graphics and the STM was unable to produce results that measured the flow in this region of Confluence, to later be compared to the HEC-RAS program (Hydrologic Engineering Center's River Analysis System) checking the validity of the proposed model. Even this TCP was applied in two practical situations of real study, a confluence within the urban area and another in a rural watershed. Using software such as Surfer 10 (data visualization program) and 15 AutoCAD (CAD software-Computer Aided Design) were developed maps and pictures of flood forecast zones. With those answers obtained, were also quantified the elements that detail the disposal, such as: stricken areas laterally, the most critical situations the water level, flow velocity, volume, and flow in the sections included the canals. In short, this methodological approach presents advantages for the stability and capability in handling and processing of simulations in confluent channels, which generates benefits for the hydrodynamic modeling in water resources in terms of computational efficiency when applied to more sophisticated systems.