Effects of bulk elasticity on sheet formation and expansion

Rodríguez-Hakim, Mariana, Stricker, Laura y Vermant, Jan . (2022) Effects of bulk elasticity on sheet formation and expansion. Journal of Non-Newtonian Fluid Mechanics, Volume 308, 2022, 104882

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Título Effects of bulk elasticity on sheet formation and expansion
Autor(es) Rodríguez-Hakim, Mariana
Stricker, Laura
Vermant, Jan
Materia(s) Física
Abstract The destabilization, fragmentation, and atomization of thin fluid sheets governs processes such as the aerosolization of sneeze ejecta, agrochemical spraying, and fuel injection in liquid rocket engines. Although the evolution, stability, and breakup of fluid sheets composed of a Newtonian liquid has been extensively studied, the morphology and dynamics of viscoelastic fluid sheets remains poorly understood. This manuscript provides a theoretical and numerical framework that integrates the effects of fluid elasticity, surface tension, inertia, and viscosity to predict the morphology, velocity, and stress within stable fluid sheets composed of viscoelastic fluids as a function of the dimensionless Weber, Reynolds, and Weissenberg numbers. We find a non-monotonic behavior in the sheet’s size, velocity, and stress distribution as a function of the ratio between the Weissenberg and the Weber numbers. In particular, a minimum in the sheet’s size and a maximum in the stress occur when such a ratio is of the order of unity. We interpret these results as the consequence of the competing effects of the growth-favoring inertia and the restoring elastic forces acting within the sheet.
Palabras clave Viscoelasticity
Impinging jets
Fluid sheets
Extensional flow
Upper convected Maxwell model
Editor(es) Elsevier
Fecha 2022-10-01
Formato application/pdf
Identificador bibliuned:DptoFF-FCIE-Articulos-Mrodriguez-0006
http://e-spacio.uned.es/fez/view/bibliuned:DptoFF-FCIE-Articulos-Mrodriguez-0006
DOI - identifier https://doi.org/10.1016/j.jnnfm.2022.104882
ISSN - identifier 0377-0257; eISSN: 1873-2631
Nombre de la revista Journal of Non-Newtonian Fluid Mechanics
Número de Volumen 308
Publicado en la Revista Journal of Non-Newtonian Fluid Mechanics, Volume 308, 2022, 104882
Idioma eng
Versión de la publicación publishedVersion
Tipo de recurso Article
Derechos de acceso y licencia http://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
Tipo de acceso Acceso abierto
Notas adicionales The registered version of this article, first published in Journal of Non-Newtonian Fluid Mechanics,Volume 308, 2022, 104882, is available online at the publisher's website: Elsevier, https://doi.org/10.1016/j.jnnfm.2022.104882
Notas adicionales La versión registrada de este artículo, publicado por primera vez en Journal of Non-Newtonian Fluid Mechanics,Volume 308, 2022, 104882, está disponible en línea en el sitio web del editor: Elsevier, https://doi.org/10.1016/j.jnnfm.2022.104882

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Creado: Mon, 05 Feb 2024, 22:09:50 CET