Evaporation of vertical and pendant ethanol droplets and internal Marangoni convections

Liu, Jiazheng; Yu, Jialin; Zhang, Pan

doi:10.1016/j.ijheatmasstransfer.2023.124338

Cited by 3 publications

(1 citation statement)

References 43 publications

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“…Both thermocapillary and buoyancy convection are two crucial types of thermal flows 1–3 . Thermal flows play a significant role in various industrial manufacturing processes, including buoyant colloids aggregation, 4–6 droplet evaporation, 1,7,8 microfluidics smart valves, 9 and optofluidic applications 10 . Specifically, it is non‐negligible for driving forces (buoyancy and Marangoni forces) that induced thermal convection, which may change the water surface thermal field distribution and significantly affect the evaporation process 11,12 .…”

Section: Introductionmentioning

confidence: 99%

Visualization of temperature distribution and flow behavior in water evaporation using water‐soluble spiropyran

Wang,

Wan,

Chen

et al. 2024

AIChE Journal

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Understanding the convection flows driven by the uneven temperature distribution in heated aqueous solutions is fascinating and meaningful both in fundamental and industrial aspects. Therefore, it is desirable to develop a simple and convenient method for real‐time tracking of surface temperature distribution and the solvent flow state. Herein, we designed and screened a water‐soluble spiropyran derivative (BS‐SP1) that contains benzothiazole and sulfonic acid groups. The BS‐SP1 molecule was found to exceptionally maintain the reversible photochromic characteristics in water, and then served as a photo‐responsive indicator for visualizing the temperature distribution and flow behavior on water surface with high resolution. This study provides feasible guidance on the dynamic self‐assembly and thermodynamics occurring in the water evaporation system and offers a practical tool for investigating these behaviors.

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