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- Resumen es exacto "The different sources of energy, the consequences of their depletion, and the fluctuations in energy prices in the world market form the axis of the global energy debate. The growing need for energy and the environmental impacts associated with all energy generation projects, in addition to the concern over climate change, have led to the search for new horizons in the area of non-polluting renewable energies. This global situation has allowed the development of a new source of energy: hydrokinetic energy, which uses the kinetic energy contained in river currents, tidal currents, and artificial channel currents to generate electrical energy. Despite its potential benefits, such as its low environmental impact and high predictability compared to other renewable sources, hydrokinetic energy is still at an early stage of development. Although there are already commercial-type devices installed in the world, significant research and development efforts are still required to turn hydrokinetic energy into a competitive alternative compared to other more established energy sources. This thesis develops a comprehensive optimization methodology for the hydraulic design of a horizontal axis hydrokinetic turbine, based on numerical modeling. The methodology seeks to maximize the energy extracted from the flow, increasing the profitability of the system and contributing to the feasibility of hydrokinetic energy as a solid alternative for energy development in the 21st century. The use of a composite methodology that successively applies inverse and direct design methods is proposed. In an initial stage, a preliminary geometry is generated using the lifting line method and optimizing the pressure distribution on the rotor blades for ideal flow conditions. The rotor geometry is further optimized in a second stage based on a surrogate model, generated from numerical analyses using a Reynolds-Averaged Navier Stokes (RANS) three-dimensional viscous flow model. The goal is to create a robust and flexible methodology that allows the systematic design of hydrokinetic rotors for an arbitrary combination of flow and installation conditions. The method minimizes the number of geometric assumptions required and therefore also its dependence on the designer's experience."
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