Abstract : We revisit experimental studies performed by Ekman on dead-water using modern techniques in order to present new insights on this peculiar phenomenon. We extend its description to more general situations such as a three-layer fluid or a linearly stratified fluid in presence of a pycnocline, showing the robustness of dead-water phenomenon. We observe large amplitude nonlinear internal waves which are coupled to the boat dynamics, and we emphasize that the modeling of the wave-induced drag requires more analysis, taking into account nonlinear effects.
https://hal-ens-lyon.archives-ouvertes.fr/ensl-00573543
Contributeur : Thierry Dauxois
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Soumis le : vendredi 4 mars 2011 - 10:26:45
Dernière modification le : lundi 9 juillet 2018 - 13:10:02
Document(s) archivé(s) le : dimanche 5 juin 2011 - 02:41:09
