Sessile and suspended droplets on a biphilic surface in the presence of natural convection: Experimental studies and modeling

New experimental and modeling results, referring to heating and evaporation of sessile and pendant water droplet on a biphilic surface, are presented. Two modeling approaches are used: one based on the previously developed variable density model in which the droplet shape in the presence of gravity is described by the Bashforth–Adams equation, and the other based on ANSYS Fluent. It is shown that the results predicted by both approaches almost coincide in the absence of gravity, which can be considered as verification of both approaches. The predictions of both approaches are shown to be close to experimental results for pendant droplets. For sessile droplets, however, both approaches tend to under-predict experimental data. The difference in model predictions, taking and not taking into account the effect of natural convection, is shown not to exceed 3% for the experimental conditions under consideration.

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Publication Details

Journal
Physics of Fluids
Published
2025-03-01
DOI
https://doi.org/10.1063/5.0260201
Citations
1
Primary Topic
Nanomaterials and Printing Technologies
Type
article
Field-Weighted Citation Impact
0.73

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Sessile and suspended droplets on a biphilic surface in the presence of natural convection: Experimental studies and modeling

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Sessile and suspended droplets on a biphilic surface in the presence of natural convection: Experimental studies and modeling

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article en
1 citations

Abstract

New experimental and modeling results, referring to heating and evaporation of sessile and pendant water droplet on a biphilic surface, are presented. Two modeling approaches are used: one based on the previously developed variable density model in which the droplet shape in the presence of gravity is described by the Bashforth–Adams equation, and the other based on ANSYS Fluent. It is shown that the results predicted by both approaches almost coincide in the absence of gravity, which can be considered as verification of both approaches. The predictions of both approaches are shown to be close to experimental results for pendant droplets. For sessile droplets, however, both approaches tend to under-predict experimental data. The difference in model predictions, taking and not taking into account the effect of natural convection, is shown not to exceed 3% for the experimental conditions under consideration.

Physics of FluidsVol. 37(3)
University of Bergamo (IT), Novosibirsk State University (RU), National Hellenic Research Foundation (GR), Institute of Thermophysics (RU), University of Brighton (GB)
Università degli studi di Bergamo, Royal Society, Russian Science Foundation, Ministry of Science and Higher Education of the Russian Federation
Openalex Percentile: Top 30%
Nanomaterials and Printing Technologies
0.73
DOIOpen Access PDFOpenAlex
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