2026-10-142026-10-142026-01-26SANTOS JÚNIOR, Clenilton Ribeiro dos. AAnálise dinâmica de uma microturbina eólica com difusor. Orientador: Jerson Rogério Pinheiro Vaz. 2026. 50 f. Trabalho de Curso (Bacharelado em Engenharia de Energia) – Faculdade de Engenharia de Energia, Campus Universitário de Ananindeua, Universidade Federal do Pará, Ananindeua, 2026. Disponível em: https://bdm.ufpa.br/handle/prefix/10338. Acesso em:.https://bdm.ufpa.br/handle/prefix/10338The operation of micro wind turbines in regions with low average wind speeds, such as the Amazon, poses significant challenges to the aerodynamic performance of these systems. In this context, the use of diffusers emerges as an effective alternative to intensify the flow incident on the rotor, increasing torque and extracted power without the need to increase the turbine diameter. This work investigates, through experimental and numerical approaches, the dynamic behavior of a micro wind turbine equipped with a lens-type diffuser operating at low wind speeds. For this purpose, a low-cost wind tunnel was designed and built, in which measurements of the flow velocity profile and dynamic tests of the turbine were conducted for configurations with and without the diffuser. The numerical modeling is based on the Blade Element Momentum Theory, adapted to account for the flow intensification effect promoted by the diffuser, as well as on a formulation for bearing dissipative torque based on the Palmgren model with the Stribeck effect. The results indicate that the presence of the diffuser, due to the increase in effective velocity at the rotor plane, raises the values of mechanical torque, power, and power coefficient, in addition to providing a more favorable dynamic response. Good agreement between experimental and numerical results is observed, confirming the adequacy of the proposed model.Acesso AbertoMicroturbina eólicaDifusorTeoria do Momento do Elemento de PáModelo de PalmgrenEfeito StribeckMicro wind turbineDiffuserBlade Element Momentum TheoryPalmgren modelStribeck effectCNPQ::ENGENHARIAS::ENGENHARIA MECANICA::FENOMENOS DE TRANSPORTE::MECANICA DOS FLUIDOSTrabalho de Curso - Graduação - MonografiaAttribution-NonCommercial-NoDerivs 3.0 Brazil