This paper describes how to tackle new challenging coastal engineering problems related to beach erosion with a shape optimization approach. The method modifies the shape of the sea bottom in order to reduce beach erosion effects. Global optimization is shown to be necessary as the related functionals have several local minima. The authors describe the physical model used, the proposed protection devices against beach erosion and real case applications. Results have shown that geotubes can be designed to reduce beach erosion, under the constraint of minimum water draught for coastal navigation. These devices permit reduction of wave energy, orbital velocity and free surface elevation. Finally, complementary studies have shown that despite not being accounted for during design, the generated currents are also lower after the introduction of the protection device
Shape optimization of geotextile tubes for sandy beach protection
Formoptimierung geotextiler Rohre für den Schutz von Sandstränden
International Journal for Numerical Methods in Engineering ; 74 , 8 ; 1262-1277
2008
16 Seiten, 12 Bilder, 2 Tabellen, 36 Quellen
Aufsatz (Zeitschrift)
Englisch
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