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arXiv · 2007.09582

Modeling film flows down a fibre influenced by nozzle geometry

Hangjie Ji·Abolfazl Sadeghpour·Y. Sungtaek Ju·Andrea L. Bertozzi
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Abstract

We study the effects of nozzle geometry on the dynamics of thin fluid films flowing down a vertical cylindrical fibre. Recent experiments show that varying the nozzle diameter can lead to different flow regimes and droplet characteristics in the film. Using a weighted residual modeling approach, we develop a system of coupled equations that account for inertia, surface tension effects, gravity, and a film stabilization mechanism to describe both near-nozzle fluid structures and downstream bead dynamics. We report good agreement between the predicted droplet properties and the experimental data.

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Hangjie Ji, Abolfazl Sadeghpour, Y. Sungtaek Ju, Andrea L. Bertozzi. 2020-07-19. Modeling film flows down a fibre influenced by nozzle geometry. https://doi.org/10.1017/jfm.2020.605

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