Natural convection in a horizontal cylindrical annulus filled with a porous medium saturated by a nanofluid using Tiwari and Das’ nanofluid model

M. A. Sheremet, Ioan Pop

Результат исследований: Материалы для журналаСтатья

21 Цитирования (Scopus)

Аннотация

This paper deals with a numerical study of natural convection flow and heat transfer inside a concentric horizontal annulus filled with a porous medium saturated by a cuprum (Cu)-water nanofluid. The inner and outer cylinders are kept at different constant temperatures. First, the governing partial differential equations in dimensional formulation in a polar coordinate system for the physical domain are transformed in dimensionless form in terms of stream function-temperature formulation. These equations along with the corresponding boundary conditions were solved numerically by the finite difference method. Particular efforts have been focused on the effects of the Rayleigh number, porosity of the porous medium, solid volume fraction parameter of nanoparticles, annulus radius ratio, and the solid matrix of the porous medium (glass balls and aluminum foam) on the local and average Nusselt numbers, streamlines and isotherms. It is found that a very good agreement exists between the present results and those from the open literature.

Язык оригиналаАнглийский
Номер статьи107
ЖурналEuropean Physical Journal Plus
Том130
Номер выпуска6
DOI
СостояниеОпубликовано - 8 июн 2015

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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