Visualizing the dynamics of two-dimensional foams with FoamVis

Abstract

We describe an interactive computer program FoamVis that provides techniques for visualization, exploration and analysis of time-dependent 2D foam simulation data generated by the Surface Evolver. The program takes a sequence of Surface Evolver files and animates them to show velocity vectors, local strain, the position of topological changes, and the forces on objects immersed in a foam flow, and enables the user to simultaneously compare different simulations. We use FoamVis to show the correlation between different attributes, such as bubble velocity and T1 density, in a foam flowing through a constriction, the relationship between orientation and foam-induced forces acting on an elliptical object falling through a foam under gravity, and the changes in bubble size that occur during diffusion-driven coarsening of a foam containing a mixture of gases.

Bubble Rotational Features – Preliminary Investigations

“…In addition, a set of similar investigations has to be completed in the Southern Hemisphere. Beside the experimental effort, a modeling and recently developed visualization techniques, that are applicable to indicate bubble rotation [23] should be developed. However, if the stated concept is correct, it may have extended impact on the overall chemistry, biology and medicine related research.…”

Visualizing 3D Time-Dependent Foam Simulation Data

“…Evmovie scrolls through a sequence of evolver files, while SE-FIT provides a graphical interface for interacting with Surface Evolver. In previous work we [5,10] presented a tool for exploration, visualization and analysis of foam simulation data in 2D, and here we extend its functionality to 3D.…”

“…Foam scientists use 2D foam simulations to model foam behavior; foam visualization solutions [5,10] have helped them gain insights into their data. A 2D foam can be created experimentally by squeezing bubbles between parallel glass plates [15], thus providing a means to validate simulations.…”