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Accueil du site > Séminaires > Archives séminaires > Séminaires 2014 > Séminaire MSC. Lundi 17 Fevrier 2014. Claudio Falcón (DFI-FCFM Universidad de Chile) : "Spatially modulated kinks in one-dimensional fluidized granular layers".

Séminaire MSC. Lundi 17 Fevrier 2014. Claudio Falcón (DFI-FCFM Universidad de Chile) : "Spatially modulated kinks in one-dimensional fluidized granular layers"

Sauf mention contraire, les séminaires et les soutenances se déroulent à 11h30 en salle 454A du bâtiment Condorcet.


Spatially modulated kinks in one-dimensional fluidized granular layers

Claudio Falcón Beas : DFI-FCFM Universidad de Chile

We report on the experimental observation of spatially modulated kinks in a shallow one-dimensional fluidized granular layer subjected to a periodic air flow. We show the appearance of these solutions as the layer undergoes a parametric instability. Due to the inherent fluctuations of the granular layer, the kink profile exhibits an effective wavelength, a precursor, which modulates spatially the homogeneous states and drastically modifies the kink dynamics. We characterize the average and fluctuating properties of this solution. Finally, we show that the temporal evolution of these kinks is dominated by a hoping dynamics, related directly to the underlying spatial structure.


Contact : Équipe séminaires / Seminar team - Published on / Publié le 13 janvier 2014


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