Nonlinear Dynamics in experimental devices with compressed/expanded surfactant monolayers

Higuera, María; Perales Perales, José Manuel y Vega de Prada, José Manuel (2013). Nonlinear Dynamics in experimental devices with compressed/expanded surfactant monolayers. "Fluid Dynamics Research", v. 46 (n. 4); pp. 1-13. https://doi.org/10.1088/0169-5983/46/4/041404.

Descripción

Título: Nonlinear Dynamics in experimental devices with compressed/expanded surfactant monolayers
Autor/es:
  • Higuera, María
  • Perales Perales, José Manuel
  • Vega de Prada, José Manuel
Tipo de Documento: Artículo
Título del Evento: International Conference XXXIII Dynamics Days Europe. Book of abstracts.
Fechas del Evento: 19/05/2013 - 23/05/2013
Lugar del Evento: Center for Biomedical Technology, Madrid, Spain.
Título de Revista/Publicación: Fluid Dynamics Research
Fecha: Abril 2013
Volumen: 46
Materias:
Escuela: E.T.S.I. Aeronáuticos (UPM) [antigua denominación]
Departamento: Fundamentos Matemáticos de la Tecnología Aeronáutica [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

A theory is provided for a common experimental set up that is used to measure surface properties in surfactant monolayers. The set up consists of a surfactant monolayer (over a shallow liquid layer) that is compressed/expanded in a periodic fashion by moving in counter-phase two parallel, slightly immersed solid barriers, which vary the free surface area and thus the surfactant concentration. The simplest theory ignores the fluid dynamics in the bulk fluid, assuming spatially uniform surfactant concentration, which requires quite small forcing frequencies and provides reversible dynamics in the compression/expansion cycles. In this paper, we present a long-wave theory for not so slow oscillations that assumes local equilibrium but takes the fluid dynamics into account. This simple theory uncovers the physical mechanisms involved in the surfactant behavior and allows for extracting more information from each experimental run. The conclusion is that the fluid dynamics cannot be ignored, and that some irreversible dynamics could well have a fluid dynamic origin

Más información

ID de Registro: 29966
Identificador DC: http://oa.upm.es/29966/
Identificador OAI: oai:oa.upm.es:29966
Identificador DOI: 10.1088/0169-5983/46/4/041404
URL Oficial: http://iopscience.iop.org/article/10.1088/0169-5983/46/4/041404/
Depositado por: Memoria Investigacion
Depositado el: 13 Abr 2015 17:37
Ultima Modificación: 17 Ene 2017 12:11
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