Communications of the ACM
Bubbles, Bubbles Everywhere
Said Harvard's Petros Koumoutsakos, “This new method allows us for the first time to study foams with many bubbles, opening the door for simulating a wide variety of flows from the micro to the macroscale, including wet foams, turbulent flows with b
Credit: Harvard University John A. Paulson School of Engineering and Applied Sciences
The activities of tens of thousands of bubbles in foamy flows can be simulated computationally, thanks to researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) and the Swiss Federal Institute of Technology, Zurich (ETH Zurich).
Rather than color-coating each bubble, the researchers deconstructed foam into a grid, with each cell containing a part of four bubbles at most; each bubble then was color-coded yellow, green, blue, or red.
"We developed an algorithm that can go into other cells and find the remaining pieces of the bubble, matching green to green, blue to blue, etc.," explained SEAS' Petr Karnakov. "So, instead of needing millions of colors, you just need four."
ETH Zurich's Sergey Litvinov said the method can enable large-scale predictive models of flows with multiple interfaces.
From Harvard John A. Paulson School of Engineering and Applied Sciences
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