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Related Experiment Videos

Gravitational effects on structure development in quenched complex fluids.

V E Badalassi1, H D Ceniceros, S Banerjee

  • 1Department of Chemical Engineering, University of California-Santa Barbara, Santa Barbara, CA 93106-5080, USA. badalass@engineering.ucsb.edu

Annals of the New York Academy of Sciences
|January 13, 2005
PubMed
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Gravity significantly impacts how liquid mixture domains coarsen, leading to anisotropic growth laws. This study explores these effects, revealing similarities to sedimentation processes.

Area of Science:

  • Physical Chemistry
  • Materials Science
  • Fluid Dynamics

Background:

  • Binary liquid mixtures separate into distinct phases upon rapid cooling.
  • In the absence of external forces, domain coarsening exhibits dynamic scaling and self-similarity.
  • Gravity introduces anisotropy in domain growth, accelerating coarsening along the force direction.

Purpose of the Study:

  • To investigate the anisotropic growth laws in binary liquid mixtures under gravitational effects.
  • To characterize the late-time behavior of phase separation under gravity.
  • To explore the influence of gravity on scaling laws during coarsening.

Main Methods:

  • Numerical calculation of anisotropic growth laws.
  • Analysis of domain morphology and length-scale evolution.

Related Experiment Videos

  • Comparison with sedimentation processes.

    • Main Results:

    • Gravitational effects lead to anisotropic coarsening, deviating from isotropic scaling.
    • Multiple length scales emerge in the presence of gravity.
    • The growth mechanism shows similarities to sedimentation, even with small density mismatches.

    Conclusions:

    • Gravity significantly alters phase separation dynamics in binary liquid mixtures.
    • Anisotropic growth laws are crucial for understanding coarsening under external forcing.
    • This study provides foundational numerical insights into gravity-driven coarsening.