Interfacial tension measurements using a new axisymmetric drop/bubble shape technique
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Título: | Interfacial tension measurements using a new axisymmetric drop/bubble shape technique |
Autor/a: | Cabrerizo Vílchez, Miguel Ángel Fernández García, José Ramón Fernández Rodríguez, Miguel Ángel García Río, Luis Muñiz Castiñeira, María del Carmen Núñez García, Cristina |
Centro/Departamento: | Universidade de Santiago de Compostela. Centro de Investigación en Química Biolóxica e Materiais Moleculares Universidade de Santiago de Compostela. Departamento de Didácticas Aplicadas Universidade de Santiago de Compostela. Departamento de Matemática Aplicada Universidade de Santiago de Compostela. Departamento de Química Física |
Palabras chave: | Axisymmetric bubble | Mathematical models | Axisymmetric drop | Young–Laplace equation | |
Data: | 2019 |
Editor: | Royal Society of Chemistry |
Cita bibliográfica: | Cabrerizo-Vilchez, M., Fernández, J., Fernández-Rodríguez, M., García-Río, L., Muñiz, M., & Núñez, C. (2019). Interfacial tension measurements using a new axisymmetric drop/bubble shape technique. RSC Advances, 9(28) |
Resumo: | This paper introduces a new mathematical model that is used to compute either the interfacial tension of quiescent axisymmetric pendant/sessile drops and pendant/captive bubbles. This model consists of the Young–Laplace equation, that describes interface shape, together with suitable boundary conditions that guarantee a prescribed volume of drops/bubbles and a fixed position in the capillary. In order to solve the problem numerically, the Young–Laplace equation is discretized by using numerical differentiation and the numerical solutions are obtained applying the well-know Newton method. The paper contains a validation of the new methodology presented for what theoretical bubble/drops are used. Finally, some numerical results are presented for both drops and bubbles of water as well as several surfactant solutions to demonstrate the applicability, versatility and reproducibility of the proposed methodology |
Versión do editor: | https://doi.org/10.1039/c9ra00940j |
URI: | http://hdl.handle.net/10347/21154 |
DOI: | 10.1039/C9RA00940J |
E-ISSN: | 2046-2069 |
Dereitos: | © Royal Society of Chemistry, 2019. Open access article. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence |
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