Bubble effect on Kelvin-Helmholtz' instability

Details Bubble effect on Kelvin-Helmholtz' instability Bubble effect on Kelvin-Helmholtz' instability

2008-01-16

arxiv.org/abs/0801.2457v1

Continuum Mechanics and Thermodynamics 16, 1-2 (2004) 31-42

Physics

Fluid Dynamics

19 pages

Scientific paper

10.1007/s00161-003-0139-z

We derive boundary conditions at interfaces (contact discontinuities) for a class of Lagrangian models describing, in particular, bubbly flows. We use these conditions to study Kelvin-Helmholtz' instability which develops in the flow of two superposed layers of a pure incompressible fluid and a fluid containing gas bubbles, co-flowing with different velocities. We show that the presence of bubbles in one layer stabilizes the flow in some intervals of wave lengths.

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