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Accueil du site > Évènements > Séminaires > Séminaires IRPHE > Archives IRPHE > 2014

Mardi 14 Octobre 2014 / IRPHE

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Séminaire IRPHE

Peder A. Tyvand, Department of Mathematical Sciences and Technology, Norwegian University of Life Sciences, "2D oscillatory source in shear flow with a free surface", le Mardi 14 Octobre 2014 à 11h, IRPHE

Résumé : The linearised water-wave radiation problem for the oscillating 2D submerged source in an inviscid shear flow with a free surface is investigated analytically. There is a nonzero surface velocity. The depth is infinite and the vorticity is uniform. The amplitudes radiated from the source are calculated analytically. Due to Doppler effects, there may be up to four different emitted waves, and there is resonance with zero group velocity and infinite amplitude.

Keywords : Doppler effects, Green function, oscillating source, shear flow, water waves.

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