Modelagem do potencial eólico do Nordeste do Brasil sob condições atuais e de aquecimento global: uma interface entre modelos numéricos computacionais de microescala e mesoescala

• Autor(a) principal: Faria, Bruno Lopes de
• Data de Publicação: 2010
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/5237
• topic: Vento; Energia eólica; Modelagem numérica; Wind; Eolic energy; Numerical modeling; CNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS::METEOROLOGIA::CLIMATOLOGIA

The source of renewed or clean energy, such as, the eolic energy is presented as an option for the reduction of the energy based on fossil fuel. Brazil, and in special the Brazilian northeast region, is privileged in the eolic potential due to the presence of the trade winds. In this sense, the present study consists of developing a tool to evaluate the potential of eolic power as well as to evaluate the impacts of climatic changes on the intensive kinetic energy of the winds. Climate data from the regional model MM5 (Fifth-Generation NCAR/Penn State Mesoscale Model) under current (1980-2000) and future global warming conditions (2080-2100) have been utilized. These data served as boundary and initial conditions for a micro-scale model in order to evaluate the role/impact of different surface conditions and topography of the eolic energy. The results show that for the future interval there exist a positive trend leading to an intensification of the kinetic energy of the winds, in particular in the second half of the year. This highlights the viability of application of eolic plants in this region of Brazil for both, the current period and the future. The models simulations also indicate the winter period, as being the time most significant of eolic potential, with values of the intensive kinetic energy varying between 15 J/kg the 55 J/kg. The results still indicate that the optimum positioning of eolic turbines as well as the height of the towers, are between 80 and 100 meters from the soil surface. Finally, our investigation suggests that the interface between models of different complexities, as well as the application of different methodologies for the calculation of the eolic potential, is extremely useful to increase the accuracy of estimates of the local capacity for the generation of eolic energy.