Arrêt de service lundi 11 juillet de 12h30 à 13h : tous les sites du CCSD (HAL, EpiSciences, SciencesConf, AureHAL) seront inaccessibles (branchement réseau à modifier)
Abstract : We report gravity oscillations of a liquid column partially immersed in a bath of liquid. We stress some peculiarities of this system, namely i the fact that the mass of this oscillator constantly changes with time; ii the singular character of the beginning of the rise, for which the mass of the oscillator is zero; iii the sources of dissipation in this system, which is found to be dominated at low viscosity by the entrance or exit effects, leading to a long-range damping of the oscillations. We conclude with some qualitative descriptions of a second-order phenomenon, which is the eruption of a jet at the beginning of the rise.
Élise Lorenceau, David Quéré, Jean-yves Ollitrault, Christophe Clanet. Gravitational oscillations of a liquid column in a pipe. Physics of Fluids, American Institute of Physics, 2002, 14 (6), pp.1985-1992. ⟨10.1063/1.1476670⟩. ⟨hal-01123705⟩