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Abstract(s)
Ao longo das últimas décadas, o conhecimento detalhado das características do escoamento à volta de embarcações é considerado primordial para o projeto adequado dessas embarcações, permitindo dessa forma, para o projetista, a melhoria da eficiência energética bem como a melhoria das características dinâmicas das mesmas.
Surge assim, neste contexto, a simulação. A sua principal utilização tem sido para otimização geométrica, de forma a obter um ganho na redução da resistência de avanço.
Na grande maioria da análise de projetos, há a necessidade de se realizar ensaios com modelos em escala reduzida. A utilização desses modelos exigem não só uma quantidade de tempo considerável como também tem custos elevados associados
O presente trabalho teve como principal objetivo a determinação da força de arrasto bem como o coeficiente de arrasto numa canoa de ripas de madeira de cedro.
Numa primeira fase recorreu-se ao software Solidworks para modelação e simulação da canoa. Passando para uma fase experimental, o objetivo foi determinar a força de arrasto a partir de modelos de escala utilizando um canal hidráulico.
Por fim, procedeu-se à comparação dos resultados obtidos no canal hidráulico com os obtidos em Solidworks, cujos resultados mostraram grande concordância.
Over the last decades, the detailed knowledge of the characteristics of the flow around vessels is considered essential for the adequate design of these vessels, thus allowing, for the designer, the improvement of energy efficiency as well as the improvement of their dynamic characteristics. Thus, in this context, the simulation appears. Its main use has been for geometric optimization, in order to obtain a gain in the reduction of the advance resistance. In the great majority of the analysis of projects, it is necessary to carry out tests with small scale models. The use of these models requires not only a considerable amount of time but also high costs associated with The main objective of this work was to determine the drag force as well as the drag coefficient in a canoe of cedar wood slats. In a first phase we used the software Solidworks for modeling and simulation of the canoe. Moving to an experimental phase, the objective was to determine the drag force from scale models using a hydraulic channel. Finally, the results obtained in the hydraulic channel were compared with those obtained in Solidworks, whose results showed great agreement
Over the last decades, the detailed knowledge of the characteristics of the flow around vessels is considered essential for the adequate design of these vessels, thus allowing, for the designer, the improvement of energy efficiency as well as the improvement of their dynamic characteristics. Thus, in this context, the simulation appears. Its main use has been for geometric optimization, in order to obtain a gain in the reduction of the advance resistance. In the great majority of the analysis of projects, it is necessary to carry out tests with small scale models. The use of these models requires not only a considerable amount of time but also high costs associated with The main objective of this work was to determine the drag force as well as the drag coefficient in a canoe of cedar wood slats. In a first phase we used the software Solidworks for modeling and simulation of the canoe. Moving to an experimental phase, the objective was to determine the drag force from scale models using a hydraulic channel. Finally, the results obtained in the hydraulic channel were compared with those obtained in Solidworks, whose results showed great agreement
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Keywords
Canoa de ripas de madeira de cedro Modelos de escala Arrasto Coeficiente de arrasto Simulação Solidworks Canal hidráulico