Experimental and CFD Heat Transfer Studies of Al2O3-Water Nanofluid in a Coiled Agitated Vessel Equipped with Propeller

doi:10.1016/S1004-9541(13)60579-0

Abstract

Abstract: This paper presents the heat transfer characteristics of Al₂O₃-water nanofluid in a coiled agitated vessel with propeller agitator. The experimental study was conducted using 0.10%, 0.20% and 0.30% volume concentration of Al₂O₃-water nanofluids. The results showed considerable enhancement of convective heat transfer using the nanofluids. The empirical correlations developed for Nusselt number in terms of Reynolds number, Prandtl number, viscosity ratio and volume concentration fit with the experimental data within ±10%. The heat transfer characteristics were also simulated using computational fluid dynamics using FLUENT software with the standard k-ε model and multiple reference frame were adopted. The computational fluid dynamics (CFD) predicted Nusselt number agrees well with the experimental value and the discrepancy is found to be less than ±8%.

Key words: Al₂O₃-water nanofluid, computational fluid dynamics, coiled agitated vessel, heat transfer enhancement, Nusselt number

摘要： This paper presents the heat transfer characteristics of Al₂O₃-water nanofluid in a coiled agitated vessel with propeller agitator. The experimental study was conducted using 0.10%, 0.20% and 0.30% volume concentration of Al₂O₃-water nanofluids. The results showed considerable enhancement of convective heat transfer using the nanofluids. The empirical correlations developed for Nusselt number in terms of Reynolds number, Prandtl number, viscosity ratio and volume concentration fit with the experimental data within ±10%. The heat transfer characteristics were also simulated using computational fluid dynamics using FLUENT software with the standard k-ε model and multiple reference frame were adopted. The computational fluid dynamics (CFD) predicted Nusselt number agrees well with the experimental value and the discrepancy is found to be less than ±8%.

关键词: Al₂O₃-water nanofluid, computational fluid dynamics, coiled agitated vessel, heat transfer enhancement, Nusselt number

Thangavelu Perarasu, Mahizhnan Arivazhagan, Palani Sivashanmugam. Experimental and CFD Heat Transfer Studies of Al₂O₃-Water Nanofluid in a Coiled Agitated Vessel Equipped with Propeller[J]. Chin.J.Chem.Eng., 2013, 21(11): 1232-1243.

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Experimental and CFD Heat Transfer Studies of Al₂O₃-Water Nanofluid in a Coiled Agitated Vessel Equipped with Propeller

Experimental and CFD Heat Transfer Studies of Al₂O₃-Water Nanofluid in a Coiled Agitated Vessel Equipped with Propeller

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