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). .. , , vol.87

. .. Étude, 100 4.3.1 Ballottement sans système oscillant : cas de référence

.. .. Conclusion,

. .. Bibliographie-du-chapitre,

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. .. Étude-d'un-système-houlomoteur, 112 5.2.3 Étude du rendement par la simulation numérique

.. .. Conclusion,

. .. Bibliographie-du-chapitre,

, 12 -Réponse de l'oscillateur libre, initialement écarté de sa position d'équilibre, FIGURE 5

, t=0,513s. (d) t=0, p.885

, 13 -Instantanés du mouvement d'oscillateur libre, initialement écart de sa position d'équilibre, FIGURE 5

, Étude d'un système houlomoteur FIGURE 5.17 -Réponse du batteur à l'excitation de la houle régulière imposée

P. and =. , La figure 5.18 donne le puissance instantanée récupérée par le système houlomoteur en fonction du temps

, Le rendement du système se calcule en faisant le rapport entre l'énergie récupérée et l'énergie disponible La formule utilisée est présentée dans l

, Bibliographie du chapitre

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. .. Conclusion,

, Nous pensons qu'il serait intéressant d'approfondir cette étude afin d'optimiser les paramètres de l'oscillateur (c.-à-d. m, k et c) en fonction des caractéristiques du réservoir (c.-à-d. L et H) et de la fréquence de l'excitation extérieure. Il serait par exemple intéressant d'arriver à introduire un déphasage entre le mouvement de la surface libre et celui du système d'amortissement afin d'obtenir une dissipation d'énergie plus rapide et plus importante. Faute de temps, dans cette thèse nous nous sommes concentrés sur l'influence de l'inertie de l'oscillateur. Les premiers résultats obtenus laissent penser que ces deux caractéristiques jouent un rôle important mais il

, En effet, nous pourrions par exemple nous servir des données de houle récoltées par la bouée que nous avons au large de la côte basque pour étudier les possibilités de mise en place de systèmes houlomoteurs oscillants sur nos côtes. Il serait également intéressant de comparer les résultats obtenus à des calculs potentiels afin de quantifier la dissipation introduite par les tourbillons. D'autre part, comme nous l'avons vu un peu plus haut, la résolution des problèmes au niveau des points triples sera une avancée majeure vis à vis de l'étude des systèmes houlomoteurs. En effet, un grand nombre de ces système n'étant pas totalement immergés, Enfin les dernières perspectives envisagées sont relatives à l'étude des systèmes houlomoteurs oscillants. Dans un premier temps nous souhaiterions étudier le rendement et la survivabilité de tels systèmes en modifiant la houle incidente

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