Title: Gelation effects on the spreading of non-Newtonian drops impacting a reactive liquid Show Chinese title

Title: 非牛顿液滴撞击反应性液体时的凝胶效应对其铺展的影响

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. Show Chinese abstract

Abstract: 我们在本实验和数值研究中报告了凝胶化对毫米级非牛顿液滴（$<$10ms）在含有反应化合物的牛顿液体上撞击时早期扩散的影响。 我们的分析最初通过实验进行，考虑了多种生物聚合物和凝胶化合物浓度以及撞击速度。 然后将实验结果与基于变分多尺度方法的三维数值模拟进行比较，该方法专注于简单粘塑性液滴在无凝胶化的液体浴上的撞击（非反应性液体）。 这些比较促进了理论论证的发展，强调了凝胶化效应对液滴最大扩散的影响。