1. Numerical Investigation of Natural Convection of Nanoparticle Enhanced Ionic Liquids (NEILs) in Enclosure Heated from Below.
- Author
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Paul, Titan C., Morshed, A. K. M. M., and Khan, Jamil A.
- Subjects
NATURAL heat convection ,IONIC liquids ,HEAT transfer ,RAYLEIGH number ,NUSSELT number - Abstract
The paper presents the numerical simulation of natural convection heat transfer of Al
2 O3 nanoparticle enhanced N-butyl-N-methylpyrrolidinium bis{trifluoromethyl)sulfonyl} imide ([C4 mpyrr][NTf2 ]) ionic liquid. The simulation was performed in three different enclosures (aspect ratio: 0.5, 1, and 1.5) with heated from below. The temperature dependent thermophysical properties of base ionic liquids (ILs) and nanoparticle enhanced ionic liquids (NEILs) were applied in the numerical simulation. The numerical results were compared with the experimental result. The numerical results show that at a certain Rayleigh number NEILs has a lower Nusselt number compared to the base IL which are consistent with the experimental results. But the percentage of degradation is much less on the numerical results compared to the experimental. However the numerical results match well with the predicted model of using thermophysical properties of NEILs. From these observations it can be concluded that the extra degradation in the experimental results may occur due the particle-fluid interaction, clustering and sedimentation of nanoparticles. [ABSTRACT FROM AUTHOR]- Published
- 2016
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