Otimização das leis de manobra de comportas dos circuitos de enchimento e esgotamento de eclusas de navegação

Abstract

The main objective of this thesis is the development of a new method for the optimization of navigation lock aqueduct control gate operation rules, using numerical methods taken from Operations Research. As a component step for the obtention of a general model, a simplified model corresponding to no air inception and variable speed gate operation was developped. The simplified model has the objective of determining the optimal gate operation rule which minimizes total lock filling or emptying time and satisfies the following constraints: - cavitation control no air inception; - maximum gate operation speed for opening or closure is specified; - maximum values of water level raise or drawdown velocity are specified. The technique used is the successive linearization of the problem equations and application of the Simplex Algorithm. The efficiency of this method was tested on the example of the Promiss Powerplant Navigation Lock. ln order to obtain more general conclusions and a comparison between different locks, a formulation using dimensionless variables was also proposed and developped. For the purpose of integrating numericalIy the equation of the surges, the use of a Laplace Transform technique was found to be highly accurate, efficient and stable. Finally, a number of recommendations are presented for future research work. One of the objectives is the establishment of simple relationships between optimal gate operation rules and lock characteristics.