Desenvolvimento de um programa computacional para estudar a propagação de uma cheia em face da variabilidade da rugosidade e da declividade do canal

Abstract

Many studies have been carried out in recent years in attempts to develop mathematical models capable to identify vulnerable areas to floods which are located near riverine systems. However, most of these computational models are often highly sophisticated, time consuming and not easily understood and promptlapplied by inexperienced engineers. There appears, for this reason, to exist a definite need for the development of simpler, efficient, more comprehensive and easier to use computational tools for the prediction of which areas near urban riverine systems may be flooded under the influence of a dynamic wave, predicting an efficient control of such risk areas. This paper discusses the capability and efficiency of a computational program QUARIGUA (Risk Quantitative Analysis of Floods in Rivers), written in FORTRAN 90, based on the hydrodynamics equations, using the Newton-Raphson technique, and under the influence of a dynamic wave. The results show that the program QUARIGUA presents a promising perspective for risk prediction of floods in critical riverine areas, considering channel bed slope and roughness variations.