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arXiv · 2409.03401

Grand-potential phase field simulations of droplet growth and sedimentation in a two-phase ternary fluid

Werner Verdier·Alain Cartalade·Mathis Plapp
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Abstract

A methodology is built to model and simulate the dynamics of domain coarsening of a two-phase ternary liquid with an arbitrary phase diagram. High numerical performance is obtained through the use of the phase field-method for interface capturing, a lattice Boltzmann method numerical scheme for all the model equations, and a portable, parallel simulation code running on multiple GPUs. The model is benchmarked against an analytic solution for a ternary diffusion couple. It also reproduces the well-known power law for droplet coarsening during Ostwald ripening without fluid flow. Large-scale simulations with flow illustrate the effects of momentum transport and buoyancy, as well as droplet coalescence and sedimentation.

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Werner Verdier, Alain Cartalade, Mathis Plapp. 2024-09-05. Grand-potential phase field simulations of droplet growth and sedimentation in a two-phase ternary fluid. https://doi.org/10.1088/1361-651x/ad627e

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