The periodic forces imposed at the oars and due to the movement of the rowers induce on the boat secondary motions causing an additional drag which may represent a significant part of total dissipated energy. We have taken the approach of computing the complete scull motion including pitching, vertical and horizontal movement. A full dynamic model requires simulating rowers inertial forces, thrust forces at the oarlocks and fluid-dynamic forces. It is a complex fluid-structure interaction problem that we analyzed by coupling different fluid dynamic models with a dynamic model of the boat. We will therefore compare the results obtained using these alternatives.
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