Droplets Through a Forest

When droplets flow through a forest of microfluidic posts, they can deform around the obstacle or break up into smaller droplets. Here, researchers explore the factors that control the outcome, as well as when droplets collide, coalesce, and mix. (Video and image credit: D. Meer et al.)

A Drop’s Shape Effects

Falling raindrops get distorted by the air rushing past them, ultimately breaking large droplets into many smaller ones. This research poster shows how variable this process is by showing two different raindrops, both of the same 8-mm initial diameter. On the left, the drop is prolate — longer than it is wide — and on the right, the drop is oblate — wider than it is long. Moving from bottom to top, we see a series of snapshots of each drop’s shape as it deforms and, eventually, breaks into smaller drops. The overall process is similar for each: the drop flattens, dimples, and then inflates like a sail, with part of the drop thinning into a sheet and ultimately breaking into smaller droplets. Yet, each drop’s specific details are entirely different. (Image credit: S. Dighe et al.)

#2024gofm #bag #dropletBreakup #droplets #flowVisualization #fluidDynamics #physics #raindrops #science

There is new interesting numerical work from @[email protected] A. Vela-Martín and @[email protected] about #DropletBreakup.

Our department is very active in this field for a long time, with numerous experimental approaches.
I'll link some of this work in the 🧵

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https://www.science.org/doi/10.1126/sciadv.abp9561