Physics of drying complex fluid drop: Flow field, pattern formation, and desiccation cracks

Mondal, Ranajit and Sahu, Kirti Chandra (2023) Physics of drying complex fluid drop: Flow field, pattern formation, and desiccation cracks. Physics of Fluids, 35 (6). 061301. ISSN 1070-6631

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Drying complex fluids is a common phenomenon where a liquid phase transforms into a dense or porous solid. This transformation involves several physical processes, such as the diffusion of liquid molecules into the surrounding atmosphere and the movement of dispersed phases through evaporation-driven flow. As a result, the solute forming a dried deposit exhibits unique patterns and often displays structural defects like desiccation cracks, buckling, or wrinkling. Various drying configurations have been utilized to study the drying of colloids, the process of their consolidation, and fluid-flow dynamics. This review focuses on the drying of colloids and the related phenomena, specifically the drying-induced effects observed during sessile drop drying. We first present a theoretical overview of the physics of drying pure and binary liquid droplets, followed by drying colloidal droplets. Then, we explain the phenomena of pattern formation and desiccation cracks. Additionally, the article briefly describes the impact of evaporation-driven flows on the accumulation of particles and various physical parameters that influence deposit patterns and cracks.

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IITH Creators:
IITH CreatorsORCiD
Mondal, Ranajit
Sahu, Kirti Chandra
Item Type: Article
Uncontrolled Keywords: Colloids; Cracks; Deposits; Diffusion in liquids; Driers (materials); Drops; Evaporation; Flow of fluids; Wetting; Complex fluids; Desiccation cracks; Drop flow; Flow field pattern; Fluid drop; Liquid Phase; Liquid phasis; Pattern formation; Phase transform; Porous solids; Drying
Subjects: Chemical Engineering
Chemical Engineering > Fluid Mechanics
Divisions: Department of Chemical Engineering
Depositing User: Mr Nigam Prasad Bisoyi
Date Deposited: 12 Nov 2023 09:52
Last Modified: 12 Nov 2023 09:52
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