1. Biblioteca Digital da Produção Intelectual Discente
2. Trabalhos de Conclusão de Curso de Graduação
3. Engenharia Mecânica

Título:	Bio-inspired small wind turbines using flying seeds geometry
Autor(es):	Alcantara, Bruno Fracaro Cid de
Orientador(es):	Brasil Júnior, Antônio César Pinho
Assunto:	Turbinas eólicas Design
Data de apresentação:	26-Jul-2023
Data de publicação:	22-Mai-2024
Referência:	ALCANTARA, Bruno Fracaro Cid de. Bio-inspired small wind turbines using flying seeds geometry. 2023. 35 f., il. Trabalho de Conclusão de Curso (Bacharelado em Engenharia Mecânica) — Universidade de Brasília, Brasília, 2023.
Abstract:	This study investigates the power coefficient of falling seeds from the Pterogyne nitens tree and aims to develop a small wind turbine with blades inspired by the seed’s wing-shaped geometry. The study explores the seeds’ geometry, structure, fibers, weight, surface charac teristics, and flight dynamics to understand their motion and potential for energy generation. High-speed cameras were used to capture the seed’s position and inclination during labora tory tests, which provided parameters for rotation and descent. These findings offer insights into the potential for biomimicry in wind turbine design and highlight the importance of un derstanding natural systems for sustainable energy solutions. This research also presents a study on various turbine models aimed at optimizing the blades and evaluating the power coefficient obtained. Numerical analysis was performed on ANSYS CFX software with the Shear Stress Transport turbulence model and a mesh model designed to accurately reflect the blade/fluid interface and the turbine wake. Several turbine designs were evaluated, vary ing characteristics such as blade size, pitch angle, and blade surface. The designed blades showed significant differences from traditional models. The blades were tested as flat sur faces, enabling the study of the surface geometry rather than the wing profile. CFD results showed a power coefficient of 0.26 for two turbine models at different configurations, a high torque and low rotation turbine, and a high rotation and low torque turbine. The power co efficient obtained was similar to other turbines developed by the same laboratory with more conventional techniques, this shows that the flying seeds geometry do offer potential for power extraction as wind turbines.
Informações adicionais:	Trabalho de Conclusão de Curso (graduação) — Universidade de Brasília, Faculdade de Tecnologia, Departamento de Engenharia Mecânica, 2023.
Licença:	A concessão da licença deste item refere-se ao termo de autorização impresso assinado pelo autor que autoriza a Biblioteca Digital da Produção Intelectual Discente da Universidade de Brasília (BDM) a disponibilizar o trabalho de conclusão de curso por meio do sítio bdm.unb.br, com as seguintes condições: disponível sob Licença Creative Commons 4.0 International, que permite copiar, distribuir e transmitir o trabalho, desde que seja citado o autor e licenciante. Não permite o uso para fins comerciais nem a adaptação desta.
Aparece na Coleção:	Engenharia Mecânica

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