Thickness fluctuations in turbulent soap films.
Rapidly flowing soap films provide a simple and attractive system to study two-dimensional hydrodynamics and turbulence. By measuring the rapid fluctuations of the thickness of the film in the turbulent regime, we find that the statistics of these fluctuations closely resemble those of a passive scalar field in a turbulent flow. The scalar spectra are well described by Kolmogorov-like scaling while the high-order moments show clear deviations from regular scaling just like dye or temperature fluctuations in 3D turbulent flows.
Greffier
O
O
Centre de Physique Moleculaire Optique et Hertzienne (UMR 5798), Université Bordeaux I, 351 cours de la Liberation, 33405 Talence, France.
Amarouchene
Y
Y
Kellay
H
H