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Updated: Aug 3, 2026
10:03
The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids
Published on: September 30, 2014
Disjoining potential and spreading of thin liquid layers in the diffuse-interface model coupled to hydrodynamics
1Department of Chemical Engineering and Minerva Center for Nonlinear Physics of Complex Systems, Technion-Israel Institute of Technology, Haifa 32000, Israel.
Summary
This study uses a hydrodynamic phase field model to simulate film spreading on solid surfaces. Evaporation and condensation significantly impact film dynamics near the contact line, requiring kinetic retardation for accurate theories.
Area of Science:
- Fluid dynamics
- Materials science
- Surface science
Background:
- Film spreading on solid surfaces is crucial in various industrial applications.
- Understanding the behavior of fluids near three-phase contact lines is complex.
- Existing models may not fully capture the effects of phase transitions on film dynamics.
Purpose of the Study:
- To apply a hydrodynamic phase field model to analyze film spreading dynamics.
- To investigate the role of disjoining potential in fluid properties near contact lines.
- To explore the influence of evaporation and condensation on film spreading.
Main Methods:
- Utilized a hydrodynamic phase field model.
- Computed disjoining potential from solvability conditions of the density field equation.
- Derived film motion equations using the lubrication approximation.
- Performed numerical integration for sample solutions.
Main Results:
- The model successfully simulates film spreading on solid surfaces.
- The disjoining potential was computed considering boundary conditions.
- Sharp-interface limits were obtained for quasiequilibrium spreading.
- Evaporation and condensation were shown to significantly affect contact line dynamics.
Conclusions:
- The hydrodynamic phase field model provides a robust framework for studying film spreading.
- Accurate theories require accounting for kinetic retardation of interphase transport.
- Phase transitions like evaporation and condensation are critical factors in film dynamics.
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