Conjugated liquid layers driven by the short-wavelength Bénard–Marangoni instability: experiment and numerical simulation

  title={Conjugated liquid layers driven by the short-wavelength B{\'e}nard–Marangoni instability: experiment and numerical simulation},
  author={Iman Nejati and Mathias Dietzel and Steffen Hardt},
  journal={Journal of Fluid Mechanics},
  pages={46 - 71}
The coupled dynamics of two conjugated liquid layers of disparate thicknesses, which coat a solid substrate and are subjected to a transverse temperature gradient, is investigated. The upper liquid layer evolves under the short-wavelength Bénard–Marangoni instability, whereas the lower, much thinner film undergoes a shear-driven long-wavelength deformation. Although the lubricating film should reduce the viscous stresses acting on the up to one hundred times thicker upper layer by only 10 %, it… 
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