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arXiv · 2509.08558

Gelation effects on the spreading of non-Newtonian drops impacting a reactive liquid

Julie Godefroid·David Bouttes·Anselmo Pereira·Cécile Monteux
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Abstract

We report in this experimental and numerical study effects of gelation on the early-time spreading ($<$ 10ms) of millimetric non-Newtonian drops of biopolymer and particle suspensions impacting a Newtonian liquid containing reactive compounds. Our analyses are initially conducted through experiments by considering a variety of biopolymer and gelling compound concentrations, and impact velocities. The experimental results are then compared to three-dimensional numerical simulations based on a variational multiscale approach, which focuses on the impact of simple viscoplastic drops on a liquid bath in the absence of gelation (non-reactive liquid). These comparisons enable the development of theoretical arguments that emphasise relevant gelation effects on the drop's maximum spreading.

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Julie Godefroid, David Bouttes, Anselmo Pereira, Cécile Monteux. 2025-09-10. Gelation effects on the spreading of non-Newtonian drops impacting a reactive liquid. https://arxiv.org/abs/2509.08558

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