Conjugate heat transfer of Al2O3–water nanofluid in a square cavity heated by a triangular thick wall using Buongiorno’s two-phase model

A. I. Alsabery, T. Armaghani, A. J. Chamkha, Ishak Hashim

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The present study investigates the conjugate heat transfer in a square cavity heated by a triangular solid and saturated with (Formula presented.)–water nanofluid. Two-phase Buongiorno’s model is used for modeling the nanofluid heat transfer. The finite element method is used for numerical solution of the dimensionless governing equations subject to the boundary conditions. Comparisons of the proposed method with previously published experimental and numerical works show a good agreement. The effects of some parameters such as the Rayleigh number, thermal conductivity ratio, dimensionless triangular wall thickness and nanofluid volume fraction on heat transfer and nanoparticle distributions are completely studied and discussed. The results show clockwise rotations for streamlines and nanoparticle migration. Also the Nusselt number increases with the nanofluid volume fraction. A continuous reduction is seen for the mean Nusselt number by increasing the dimensionless triangular wall thickness for all the considered values of the Rayleigh number.

Original languageEnglish
Pages (from-to)1-16
Number of pages16
JournalJournal of Thermal Analysis and Calorimetry
DOIs
Publication statusAccepted/In press - 14 Jun 2018

Fingerprint

thick walls
heat transfer
Rayleigh number
Nusselt number
Heat transfer
cavities
Volume fraction
Nanoparticles
nanoparticles
Thermal conductivity
finite element method
thermal conductivity
Boundary conditions
boundary conditions
Finite element method
Water
water

Keywords

  • Brownian motion
  • Heat transfer
  • Nanofluid
  • Nanoparticle distribution
  • Thermophoresis effect
  • Triangular solid

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

Cite this

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title = "Conjugate heat transfer of Al2O3–water nanofluid in a square cavity heated by a triangular thick wall using Buongiorno’s two-phase model",
abstract = "The present study investigates the conjugate heat transfer in a square cavity heated by a triangular solid and saturated with (Formula presented.)–water nanofluid. Two-phase Buongiorno’s model is used for modeling the nanofluid heat transfer. The finite element method is used for numerical solution of the dimensionless governing equations subject to the boundary conditions. Comparisons of the proposed method with previously published experimental and numerical works show a good agreement. The effects of some parameters such as the Rayleigh number, thermal conductivity ratio, dimensionless triangular wall thickness and nanofluid volume fraction on heat transfer and nanoparticle distributions are completely studied and discussed. The results show clockwise rotations for streamlines and nanoparticle migration. Also the Nusselt number increases with the nanofluid volume fraction. A continuous reduction is seen for the mean Nusselt number by increasing the dimensionless triangular wall thickness for all the considered values of the Rayleigh number.",
keywords = "Brownian motion, Heat transfer, Nanofluid, Nanoparticle distribution, Thermophoresis effect, Triangular solid",
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T1 - Conjugate heat transfer of Al2O3–water nanofluid in a square cavity heated by a triangular thick wall using Buongiorno’s two-phase model

AU - Alsabery, A. I.

AU - Armaghani, T.

AU - Chamkha, A. J.

AU - Hashim, Ishak

PY - 2018/6/14

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N2 - The present study investigates the conjugate heat transfer in a square cavity heated by a triangular solid and saturated with (Formula presented.)–water nanofluid. Two-phase Buongiorno’s model is used for modeling the nanofluid heat transfer. The finite element method is used for numerical solution of the dimensionless governing equations subject to the boundary conditions. Comparisons of the proposed method with previously published experimental and numerical works show a good agreement. The effects of some parameters such as the Rayleigh number, thermal conductivity ratio, dimensionless triangular wall thickness and nanofluid volume fraction on heat transfer and nanoparticle distributions are completely studied and discussed. The results show clockwise rotations for streamlines and nanoparticle migration. Also the Nusselt number increases with the nanofluid volume fraction. A continuous reduction is seen for the mean Nusselt number by increasing the dimensionless triangular wall thickness for all the considered values of the Rayleigh number.

AB - The present study investigates the conjugate heat transfer in a square cavity heated by a triangular solid and saturated with (Formula presented.)–water nanofluid. Two-phase Buongiorno’s model is used for modeling the nanofluid heat transfer. The finite element method is used for numerical solution of the dimensionless governing equations subject to the boundary conditions. Comparisons of the proposed method with previously published experimental and numerical works show a good agreement. The effects of some parameters such as the Rayleigh number, thermal conductivity ratio, dimensionless triangular wall thickness and nanofluid volume fraction on heat transfer and nanoparticle distributions are completely studied and discussed. The results show clockwise rotations for streamlines and nanoparticle migration. Also the Nusselt number increases with the nanofluid volume fraction. A continuous reduction is seen for the mean Nusselt number by increasing the dimensionless triangular wall thickness for all the considered values of the Rayleigh number.

KW - Brownian motion

KW - Heat transfer

KW - Nanofluid

KW - Nanoparticle distribution

KW - Thermophoresis effect

KW - Triangular solid

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