Viscous coupling of shear-free turbulence across nearly flat fluid interfaces

  title={Viscous coupling of shear-free turbulence across nearly flat fluid interfaces},
  author={Julian Charles Roland Hunt and Derek D. Stretch and Stephen E. Belcher},
  journal={Journal of Fluid Mechanics},
  pages={96 - 120}
The interactions between shear-free turbulence in two regions (denoted as + and − on either side of a nearly flat horizontal interface are shown here to be controlled by several mechanisms, which depend on the magnitudes of the ratios of the densities, ρ+/ρ−, and kinematic viscosities of the fluids, μ+/μ−, and the root mean square (r.m.s.) velocities of the turbulence, u0+/u0−, above and below the interface. This study focuses on gas–liquid interfaces so that ρ+/ρ− ≪ 1 and also on where… 
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