Analysis of the flow pattern modifications in a bubbly Couette-Taylor flow
Langue
en
Article de revue
Ce document a été publié dans
Physics of Fluids. 2007-11, vol. 19, p. 118101-1: 118101-4
American Institute of Physics
Résumé en anglais
The aim of this Brief Communication is to discuss the bubble effect on the Couette-Taylor flow patterns in the transition from laminar to turbulent flow, especially in the weakly turbulent regime. It is shown that bubble ...Lire la suite >
The aim of this Brief Communication is to discuss the bubble effect on the Couette-Taylor flow patterns in the transition from laminar to turbulent flow, especially in the weakly turbulent regime. It is shown that bubble location and local void fractions both in the vortices cores and in the near wall regions directly influence the axial wavelength. Bubbles trapped in the vortices tend to increase the vorticity and reduce the axial diffusivity. Bubbles near the wall contribute to “shear induced” turbulence depending on the void fraction gradient near the wall and the bubble size.< Réduire
Mots clés en anglais
Couette flows
Vortex dynamics
Bubble dynamics
Turbulent flows
Rotating flows
Origine
Importé de halUnités de recherche