Marinho, D.A.Barbosa, Tiago M.Mantripragada, NarendraVilas-Boas, João PauloRouard, A.H.Mantha, VishveshwarRouboa, AbelSilva, A.J.2011-03-012011-03-012010Marinho, D.A.; Barbosa, Tiago M.; Mantripragada, N.; Vilas-Boas, J.P.; Rouard, A.; Mantha, V.; Rouboa, A.; Silva, A.J. (2010). The gliding phase in swimming: the effect of water depth. In XI Biomechanics and Medicine in Swimming. Oslo, p. 122-124http://hdl.handle.net/10198/3571The aim of this study was to analyse the effect of depth on drag during the underwater gliding. CFD simulations were applied to the flow around a 3D model of a male adult swimmer in a prone gliding position with the arms extended at the front. The domain to perform the simulations was created with 3.0 m depth, 3.0 m width and 11.0 m length. The drag coefficient and the hydrodynamic drag force were computed, using a steady flow velocity of 2.50 m/s for depths of 0.20, 0.50, 1.0, 1.50, 2.01 2.50 and 2.80 m. As the depth increased, the drag coefficient and drag force decreased. The water depth seems to have a positive effect on reducing hydrodynamic drag during the gliding after starts and turns, although a compromise between decreasing drag (by increasing water depth) and gliding travel distance should be a main concern of swimmers.engCFDHydrodynamicsSimulationHuman modelconference object