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Related Experiment Videos

Interface pinning in spontaneous imbibition.

M Dubé1, S Majaniemi, M Rost

  • 1Centre for the Physics of Materials, McGill University, Montréal, Québec, Canada H3A 2T8.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|December 12, 2001
PubMed
Summary
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This study investigates how evaporation and gravity affect spontaneous imbibition using phase field modeling. Results show interface position and roughness dynamics are influenced by these factors, leading to distinct scaling behaviors.

Area of Science:

  • Physics
  • Fluid Dynamics
  • Materials Science

Background:

  • Spontaneous imbibition is crucial in various natural and industrial processes.
  • Understanding interface dynamics under external forces like evaporation and gravity is essential.

Purpose of the Study:

  • To analyze the effects of evaporation and gravity on spontaneous imbibition using a phase field model.
  • To characterize the interface position, pinning phenomena, and statistical roughness.

Main Methods:

  • Utilized a phase field formalism to model spontaneous imbibition.
  • Introduced evaporation via a nonconserving term and gravity via a convective term.
  • Analyzed interface position H(t) and statistical roughness exponent chi.

Main Results:

Related Experiment Videos

  • Early interface position follows H(t) ~ t^1/2 until a crossover time.
  • Pinning height Hp(g,epsilon) is approached exponentially.
  • Interface roughness exponent chi ~ 1.25, with crossover in dynamic length scale.

Conclusions:

  • Evaporation and gravity significantly influence spontaneous imbibition dynamics.
  • The study provides a quantitative description of interface pinning and roughness under these conditions.
  • Phase field modeling offers a robust framework for studying complex fluid-interface phenomena.