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The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids
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Dynamics of two-dimensional liquid bridges.

Rodrigo C V Coelho1,2, Luís A R G Cordeiro1,2, Rodrigo B Gazola1,2

  • 1Centro de Física Teórica e Computacional, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|February 28, 2022
PubMed
Summary

Researchers simulated liquid bridge motion using a lattice Boltzmann method. They analyzed drag forces, deformation, and breakup conditions for different velocities, contact angles, and Bond numbers.

Keywords:
binary fluidsfluid dynamicslattice Boltzmann methodliquid bridgewetting

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Area of Science:

  • Fluid dynamics
  • Computational physics

Background:

  • Understanding liquid bridge dynamics is crucial for microfluidics and material science.
  • Simulating these systems requires robust numerical methods to capture complex interface behaviors.

Purpose of the Study:

  • To simulate the motion of a vertical, two-dimensional liquid bridge between two solid substrates.
  • To analyze the drag force, deformation, and breakup dynamics of the liquid bridge under varying conditions.

Main Methods:

  • A multicomponent pseudopotential lattice Boltzmann method was employed for simulation.
  • The Young-Laplace equation was used to validate the numerical method against equilibrium bridge shapes.

Main Results:

  • Drag force was calculated as a function of velocity, contact angle, and Bond number.
  • Liquid bridge deformation was studied by analyzing advancing and receding contact angles.
  • The critical velocity for liquid bridge breakup was investigated.

Conclusions:

  • The study provides insights into the steady-state and dynamic behaviors of liquid bridges.
  • The findings are valuable for predicting liquid bridge stability and breakup in various applications.