HEAT TRANSFER INTENSIFICATION IN A 3D CAVITY USING HYBRID CNT-AL2O3 (15-85%) NANOFLUID | Zendy

Abdelkarim Aydi | Zendy; Mohammed A. Tashkandi | Zendy

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HEAT TRANSFER INTENSIFICATION IN A 3D CAVITY USING HYBRID CNT-AL2O3 (15-85%) NANOFLUID

Author(s) -

Abdelkarim Aydi,

Mohammed A. Tashkandi

Publication year - 2018

Publication title -

frontiers in heat and mass transfer

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.404

H-Index - 18

ISSN - 2151-8629

DOI - 10.5098/hmt.11.27

Subject(s) - nanofluid , thermal fluids , heat transfer , materials science , frontier , thermal , enhanced heat transfer , mechanical engineering , nanotechnology , mechanics , thermodynamics , engineering , nanoparticle , political science , thermal resistance , physics , law

In this work, a computational study of convective heat transfer in a hybrid CNT-Al2O3/water nanofluid cavity filled. The main considered parameters are the Rayleigh number and nanoparticles volume fraction. Results are presented in terms of flow structure, temperature field, and average Nusselt number. Since CNT and Al2O3 have different shapes to models are used to evaluate the effective thermal conductivity. It was found that both increasing Rayleigh number and nanoparticles volume fraction increase the heat transfer intensify the flow and affect the temperature field. Adding nanoparticles enhances the heat transfer due to the enhancement of the effective thermal conductivity. The maximum percentage of heat transfer enhancement occurs at the transition regime (Ra = 104) and is equal to 28%.

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