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Thermal Instability analysis of an elastico-viscous nanofluid layer

  • Datos identificativos

    Identificador: imarina:5132355
    Autores:
    Chand RRana GPuigjaner D
    Resumen:
    The purpose of this paper is to study the thermal instability analysis of an elastico-viscous nanofluid layer heated from below. The Rivlin-Ericksen type fluid model is used to describe the rheological behavior of an elastico-viscous nanofluid. The linear stability criterion for the onset of both stationary and oscillatory convection is derived by applying the normal model analysis method. The presence of nanoparticles enhances the thermal conductivity of the fluid, and the model used for the nanofluid incorporates the effects of Brownian motion and thermophoresis. The effect of the physical parameters of the system, namely the concentration Rayleigh number, Prandtl number, capacity ratio, Lewis number, and kinematic visco-elasticity coefficient, on the stability of the system is numerically investigated. In addition, sufficient conditions for the non-existence of oscillatory convection are reported.
  • Otros:

    Autor según el artículo: Chand R; Rana G; Puigjaner D
    Departamento: Enginyeria Informàtica i Matemàtiques
    Autor/es de la URV: Puigjaner Riba, Maria Dolores
    Palabras clave: Viscoelasticity Vis-coelasticity Thermal instability Rivlin-ericksen fluid Oscillatory convection Nanofluid
    Resumen: The purpose of this paper is to study the thermal instability analysis of an elastico-viscous nanofluid layer heated from below. The Rivlin-Ericksen type fluid model is used to describe the rheological behavior of an elastico-viscous nanofluid. The linear stability criterion for the onset of both stationary and oscillatory convection is derived by applying the normal model analysis method. The presence of nanoparticles enhances the thermal conductivity of the fluid, and the model used for the nanofluid incorporates the effects of Brownian motion and thermophoresis. The effect of the physical parameters of the system, namely the concentration Rayleigh number, Prandtl number, capacity ratio, Lewis number, and kinematic visco-elasticity coefficient, on the stability of the system is numerically investigated. In addition, sufficient conditions for the non-existence of oscillatory convection are reported.
    Áreas temáticas: General engineering Engineering (miscellaneous) Engineering (all)
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    Direcció de correo del autor: dolors.puigjaner@urv.cat
    Identificador del autor: 0000-0001-5251-2022
    Fecha de alta del registro: 2023-02-18
    Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
    Enlace a la fuente original: https://et.ippt.pan.pl/index.php/et/article/view/401
    Referencia al articulo segun fuente origial: Engineering Transactions. 66 (3): 301-324
    Referencia de l'ítem segons les normes APA: Chand R; Rana G; Puigjaner D (2018). Thermal Instability analysis of an elastico-viscous nanofluid layer. Engineering Transactions, 66(3), 301-324. DOI: 10.24423/EngTrans.401.20180928
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI del artículo: 10.24423/EngTrans.401.20180928
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2018
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Engineering (Miscellaneous)
    Viscoelasticity
    Vis-coelasticity
    Thermal instability
    Rivlin-ericksen fluid
    Oscillatory convection
    Nanofluid
    General engineering
    Engineering (miscellaneous)
    Engineering (all)
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