Experimental and Numerical Analysis of a Sprint Canoe for the Olympic Games

• Autor(a) principal: Amorim, João Pedro Pereira
• Data de Publicação: 2021
• Tipo de documento: Dissertação
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10400.6/11688
• topic: Canoagem; Design do Casco; Experimental; Hidrodinâmica; Numérico; Resistência Ao Avanço; Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Aeronáutica

Portuguese culture has always been interconnected with nautical culture. Nowadays, Portugal is a powerful country in canoeing. Besides athletes, excellent training places, Portugal is one of the best manufacturers of canoes and kayaks in the world. To have a constant evolution in the design of the boats, it is crucial to study the hydrodynamics of canoes. Therefore, the present work arises in the context of the lack of scientific studies in the area of hydrodynamics in canoeing, mainly the C1 boat. In this dissertation, simulations of Computational Fluid Dynamics (CFD) were performed in order to simulate the water and air flow around the hull of two canoes to evaluate their performance. For this, the Fluid Volume method (VoF) was used to simulate the free surface, and the turbulence model ?­e Standard to simulate the turbulence. A mesh independence study was also carried out to ensure that the mesh used does not affect the intended results. The software used for this analysis was Ansys Fluent 2019 R3. In order to validate the numerical study, experimental tests were performed at full scale. The numerical model was then applied to the two vessels, where the resistance to advance of the canoes, at a range of velocities was studied, as well as for different pitch angle. Also for comparison purposes the wave elevation, as well as the effect of the flow velocity, in both canoes were evaluated. For the C1 5 L model, the values were overestimated numerically, while for the other model, the C1 8 L, the results were closer to the values obtained experimentally. Other numerical studies have shown similar problems, which possibly has to do with the exact determination of the waterline position, which significantly influences the final results.