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Thermal Instability analysis of an elastico-viscous nanofluid layer

  • Dades identificatives

    Identificador: imarina:5132355
    Autors:
    Chand RRana GPuigjaner D
    Resum:
    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.
  • Altres:

    Autor segons l'article: Chand R; Rana G; Puigjaner D
    Departament: Enginyeria Informàtica i Matemàtiques
    Autor/s de la URV: Puigjaner Riba, Maria Dolores
    Paraules clau: Viscoelasticity Vis-coelasticity Thermal instability Rivlin-ericksen fluid Oscillatory convection Nanofluid
    Resum: 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.
    Àrees temàtiques: General engineering Engineering (miscellaneous) Engineering (all)
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: dolors.puigjaner@urv.cat
    Identificador de l'autor: 0000-0001-5251-2022
    Data d'alta del registre: 2023-02-18
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://et.ippt.pan.pl/index.php/et/article/view/401
    Referència a l'article segons font original: Engineering Transactions. 66 (3): 301-324
    Referència 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 Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI de l'article: 10.24423/EngTrans.401.20180928
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2018
    Tipus de publicació: Journal Publications
  • Paraules clau:

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