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Smoothed particle hydrodynamics (SPH) simulation of a tuned liquid damper (TLD) with angular motion / Gabriele Bulian in Journal of hydraulic research, Vol. 48 N° spécial (2010) 

Public ISBD [article]  in Journal of hydraulic research > Vol. 48 N° spécial (2010) . - pp. 28-39 Titre : Smoothed particle hydrodynamics (SPH) simulation of a tuned liquid damper (TLD) with angular motion Titre original : Simulation d'un amortisseur liquide (TLD) en rotation à l'aide de la méthode SPH Type de document : texte imprimé Auteurs : Gabriele Bulian, Auteur ; Antonio Souto-Iglesias, Auteur ; Louis Delorme, Auteur Année de publication : 2010 Article en page(s) : pp. 28-39 Note générale : Hydraulique Résumés en Anglais et Français Langues : Anglais (eng) Mots-clés : Roll  SDOF  Single  degree  of  freedom  systems  Smoothed  particle  hydrodynamics  SPH  TLD  Tuned  liquid  damper  Wave  breaking Index. décimale : 627 Ingénierie des cours d'eau naturels, des ports, des rades et des cotes. Installations de navigation, de dragage, de récupération et de sauvetage. Barrages et centrales électriques hydrauliques Résumé : The roll motion response of a single degree of freedom (SDOF) structural system to which a rigid rectangular partially filled liquid tank has been attached is considered. The SDOF structural system with the empty tank is first described with a mathematical model and this model is validated by performing decay experiments as well as experiments in which periodic excitations are applied to the system. The responses are accurately predicted by the model. The accuracy of these predictions allows us to study both experimentally and numerically, with weakly compressible SPH, the performance of the partially filled tank as a tuned liquid damper (TLD). The sloshing flows inside the tank comprise the onset of breaking waves which make the TLDs devices extremely difficult to model, especially for the potential flow multimodal approaches commonly used to simulate these sorts of coupled systems. In order to characterise the wave breaking effects on the response curves, tests have been performed with liquids of different viscosity, the increasing viscosity preventing the onset of breaking waves. The capabilities of SPH to treat this coupling problem are assessed and the results show that SPH is able to capture a substantial part of the physics involved in the addressed phenomena but further work remains still to be done relating to a more accurate treatment of the laminar viscosity and turbulence effects. DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.journalhydraulicresearch.com [article] Smoothed particle hydrodynamics (SPH) simulation of a tuned liquid damper (TLD) with angular motion = Simulation d'un amortisseur liquide (TLD) en rotation à l'aide de la méthode SPH [texte imprimé] / Gabriele Bulian, Auteur ; Antonio Souto-Iglesias, Auteur ; Louis Delorme, Auteur . - 2010 . - pp. 28-39. Hydraulique Résumés en Anglais et Français Langues : Anglais (eng) in Journal of hydraulic research > Vol. 48 N° spécial (2010) . - pp. 28-39 Mots-clés : Roll  SDOF  Single  degree  of  freedom  systems  Smoothed  particle  hydrodynamics  SPH  TLD  Tuned  liquid  damper  Wave  breaking Index. décimale : 627 Ingénierie des cours d'eau naturels, des ports, des rades et des cotes. Installations de navigation, de dragage, de récupération et de sauvetage. Barrages et centrales électriques hydrauliques Résumé : The roll motion response of a single degree of freedom (SDOF) structural system to which a rigid rectangular partially filled liquid tank has been attached is considered. The SDOF structural system with the empty tank is first described with a mathematical model and this model is validated by performing decay experiments as well as experiments in which periodic excitations are applied to the system. The responses are accurately predicted by the model. The accuracy of these predictions allows us to study both experimentally and numerically, with weakly compressible SPH, the performance of the partially filled tank as a tuned liquid damper (TLD). The sloshing flows inside the tank comprise the onset of breaking waves which make the TLDs devices extremely difficult to model, especially for the potential flow multimodal approaches commonly used to simulate these sorts of coupled systems. In order to characterise the wave breaking effects on the response curves, tests have been performed with liquids of different viscosity, the increasing viscosity preventing the onset of breaking waves. The capabilities of SPH to treat this coupling problem are assessed and the results show that SPH is able to capture a substantial part of the physics involved in the addressed phenomena but further work remains still to be done relating to a more accurate treatment of the laminar viscosity and turbulence effects. DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.journalhydraulicresearch.com