In this paper, shape optimization tools are applied to coastal engineering. A barred beach
protection study is described, using a new type of
water wave attenuator device, namely geotextile tube, to
reduce the mobilization of sediments. A global
optimization algorithm, able to pursue beyond local minima, is
used to search for the optimum properties of the geotextile tube.The optimal
configuration is then post-validated for generated currents.
Mathematics Subject Classification: Primary: 58F15, 58F17; Secondary: 53C35.