Impact of the Wetting Length on Flexible Blade Spreading - Archive ouverte HAL Access content directly
Journal Articles Physical Review Letters Year : 2020

Impact of the Wetting Length on Flexible Blade Spreading

Marion Krapez
  • Function : Author
Anaïs Gauthier
Hamid Kellay
Jean-Baptiste Boitte
  • Function : Author
Odile Aubrun
  • Function : Author
Annie Colin
  • Function : Author

Abstract

We study the spreading of a Newtonian fluid by a deformable blade, a common industrial problem, characteristic of elasto-hydrodynamic situations. Here, we consider the case of a finite reservoir of liquid, emptying as the liquid is spread. We evidence the role of a central variable: the wetting length lw, which sets a boundary between the wet and dry parts of the blade. We show that the deposited film thickness e depends quadratically with lw. We study this problem experimentally and numerically by integration of the elasto-hydrodynamic equations, and finally propose a scaling law model to explain how lw influences the spreading dynamics.
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Dates and versions

hal-03116506 , version 1 (02-03-2021)

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Marion Krapez, Anaïs Gauthier, Hamid Kellay, Jean-Baptiste Boitte, Odile Aubrun, et al.. Impact of the Wetting Length on Flexible Blade Spreading. Physical Review Letters, 2020, 125 (25), ⟨10.1103/PhysRevLett.125.254506⟩. ⟨hal-03116506⟩
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