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


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    Title :

    Shape optimization of geotextile tubes for sandy beach protection


    Additional title:

    Formoptimierung geotextiler Rohre für den Schutz von Sandstränden


    Contributors:


    Publication date :

    2008


    Size :

    16 Seiten, 12 Bilder, 2 Tabellen, 36 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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