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Orientador(es)
Resumo(s)
The purpose of this study was to analyze the hydrodynamic characteristics of a realistic model of an elite
swimmer hand/forearm using three-dimensional computational fluid dynamics techniques. A three-dimensional
domain was designed to simulate the fluid flow around a swimmer hand and forearm model in different orientations
(0°, 45°, and 90° for the three axes Ox, Oy and Oz). The hand/forearm model was obtained through
computerized tomography scans. Steady-state analyses were performed using the commercial code Fluent.
The drag coefficient presented higher values than the lift coefficient for all model orientations. The drag coefficient
of the hand/forearm model increased with the angle of attack, with the maximum value of the force
coefficient corresponding to an angle of attack of 90°. The drag coefficient obtained the highest value at an
orientation of the hand plane in which the model was directly perpendicular to the direction of the flow. An
important contribution of the lift coefficient was observed at an angle of attack of 45°, which could have an
important role in the overall propulsive force production of the hand and forearm in swimming phases, when
the angle of attack is near 45°.
Descrição
Palavras-chave
Computational fluid dynamics Aquatics Forces Lift Drag
Contexto Educativo
Citação
Marinho, D.A.; Silva, A.J.; Reis, V.M.; Barbosa, Tiago M.; Vilas-Boas, J.P.; Alves, F.B.; Machado, L.; Rouboa, A. - Three-dimensional CFD analysis of the hand and forearm in swimming. Journal of Applied Biomechanics. ISSN 1065-8483. 27:1, p. 74-80
Editora
Human kinetics publ INC