Numerical modeling of a self propelled dolphin jump out of water
Résumé
Abstract A computational model is developed to investigate the jump of a self propelled dolphin out of water. This model relies on the Navier-Stokes equations where a fictitious domain approach with the volume penalization method is used for the fluid structure coupling, and the continuous surface force approach is used to model the water-air interface, the later being tracked in a level-set framework. The dolphin geometry is based on freely available data from the literature. While the body deformation is imposed, the leading linear and angular displacements are computed from the Newton's laws. Numerical simulations show that it is necessary to generate large propulsives forces to allow the jump out of water. When the dolphin is out of water, its trajectory follows a pure ballistic one.
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