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Related Experiment Video

Updated: Jun 8, 2026

The Diffusion of Passive Tracers in Laminar Shear Flow

The Diffusion of Passive Tracers in Laminar Shear Flow

Published on: May 1, 2018

Diffuse-interface field approach to modeling arbitrarily-shaped particles at fluid-fluid interfaces.

Paul C Millett¹, Yu U Wang

¹Idaho National Laboratory, Idaho Falls, ID 83415, USA. Paul.Millett@inl.gov

Journal of Colloid and Interface Science

|October 5, 2010

Summary

We developed a new simulation method to model solid particles at fluid interfaces. This approach accurately captures capillary forces and particle behavior, enabling studies of complex interfacial phenomena.

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Area of Science:

Multiphase flow simulations
Interfacial phenomena
Colloid science

Background:

Modeling solid particles at fluid interfaces is crucial for understanding various phenomena.
Existing methods often lack generality in particle shape and interaction modeling.

Purpose of the Study:

To present a novel mesoscale simulation approach for solid particles at fluid-fluid interfaces.
To demonstrate the model's capability in handling arbitrary particle shapes and interactions.

Main Methods:

Utilizing a diffuse-interface field description for fluid phases.
Incorporating solid particles with arbitrary shapes and orientations.
Integrating electrostatic interactions and external forces from prior work.

Main Results:

Verified correct capillary forces and contact angles against analytical solutions.
Simulated particle rotations, external force-induced capillary attraction/repulsion.
Observed spinodal decomposition arrest due to particle jamming at interfaces.

Conclusions:

The novel mesoscale simulation approach is robust and versatile.
The model accurately predicts particle behavior and interfacial phenomena.
This method provides a powerful tool for studying complex colloidal systems at interfaces.