Open Access

ARTICLE

Spreading of a Multicomponent Drop in Water: Solutions and Suspensions

Andrey Y. Ilinykh^*

Ishlinsky Institute for Problems in Mechanics of the Russian Academy of Sciences, Moscow, 119526, Russia

* Corresponding Author: Andrey Y. Ilinykh. Email:

(This article belongs to this Special Issue: Hydrodynamics of a Drop)

Fluid Dynamics & Materials Processing 2020, 16(4), 723-735. https://doi.org/10.32604/fdmp.2020.08987

Received 31 October 2019; Accepted 13 March 2020; Issue published 11 August 2020

Abstract

The distribution of material resulting from the impact of a freely falling drop with a target liquid has been studied by photo and video registration methods. Different cases have been investigated by considering drops made of aqueous solutions (ink, salt, acid) and including fine solid particles (i.e., suspensions). New features have been observed in terms of flow dynamics and thin components produced as a result of the impact (such as banded elements, ligaments, and vortices at the surface of the liquid). In particular, the characteristics of emerging netlike structures have been found to depend on the size of the suspension clusters. For the case of acetic acid, a different patterning behavior has been obtained: sequences of concentric arcs are produced in that case. However, linear scaling laws and the discrete nature of the distribution of the droplet material seem to be features common to all the cases considered.

---

Keywords

---