The present study explores the impact of a non-Newtonian fluid drop on a rigid surface using a mesh-free approach, Smoothed Particle Hydrodynam-ics. The complex interaction between viscous and elastic forces during drop impact may be reproduced by integrating the Oldroyd-B model, which de-scribes viscoelastic fluids, into the developed computational framework. A suit-able boundary condition is assumed for interaction between fluid and solid sur-faces. The ongoing study examines how a droplet deforms, spreads, and recoils after an impact due to its viscoelasticity. The developed computational frame-work is validated by comparing results from existing literature, providing an understanding of how viscoelasticity influences drop-impact behaviour and opening up new avenues for subsequent research in fluid dynamic problems.

翻译：本研究采用无网格方法——光滑粒子流体动力学，探索了非牛顿流体液滴撞击刚性表面的过程。通过将描述粘弹性流体的Oldroyd-B模型集成到所开发的计算框架中，可以再现液滴撞击过程中粘性力与弹性力之间的复杂相互作用。针对流体与固体表面的相互作用，采用了适当的边界条件。本研究考察了液滴因其粘弹性而在撞击后发生的变形、铺展和回缩行为。通过将计算结果与现有文献进行对比，验证了所开发计算框架的有效性，从而深入理解粘弹性如何影响液滴撞击行为，并为后续流体动力学问题的研究开辟了新途径。