2012
DOI: 10.1155/2012/139370
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Abstract: Convective heat transfer can be enhanced passively by changing flow geometry and boundary conditions or by improving the thermal conductivity of the working fluid, for example, introducing suspended small solid nanoparticles. In this paper, a numerical investigation on laminar mixed convection in a water-Al 2 O 3 -based nanofluid, flowing in a triangular cross-sectioned duct, is presented. The duct walls are assumed at uniform temperature, and the single-phase model has been employed in order to analyze the na… Show more

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Cited by 14 publications
(14 citation statements)
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References 49 publications
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“…Al 2 O 3 -water nanofluids are selected as working substances in this study [29,30], which are assumed as the mixtures of base fluid (water) and Al 2 O 3 nanoparticle with 30 nm diameter. The physical properties of the base fluid and Al 2 O 3 nanoparticle [31,32] are shown in Table 1, in which the reference temperature is 293 K. A single-phase model [33] is used to evaluate the physical properties of Al 2 O 3 -water nanofluids, and based on the assumptions that the aluminium oxide nanoparticle is spherical and homogeneously suspended in the base fluid, the following models are used to compute density, specific heat, dynamic viscosity, and thermal conductivity, respectively. Obtained from the above data and models, the physical properties of Al 2 O 3 -water nanofluids are shown in Table 2.…”
Section: Physical Properties Of Nanofluidsmentioning
confidence: 99%
“…Al 2 O 3 -water nanofluids are selected as working substances in this study [29,30], which are assumed as the mixtures of base fluid (water) and Al 2 O 3 nanoparticle with 30 nm diameter. The physical properties of the base fluid and Al 2 O 3 nanoparticle [31,32] are shown in Table 1, in which the reference temperature is 293 K. A single-phase model [33] is used to evaluate the physical properties of Al 2 O 3 -water nanofluids, and based on the assumptions that the aluminium oxide nanoparticle is spherical and homogeneously suspended in the base fluid, the following models are used to compute density, specific heat, dynamic viscosity, and thermal conductivity, respectively. Obtained from the above data and models, the physical properties of Al 2 O 3 -water nanofluids are shown in Table 2.…”
Section: Physical Properties Of Nanofluidsmentioning
confidence: 99%
“…Forced convection was predominantly investigated both in laminar flow [13][14][15] and in turbulent one [16][17][18][19]. Furthermore, literature covers different fluids, like gas, liquid, non-Newtonian fluids, and, recently, nanofluids [14,20,21]. An experimental approach [4,17] or analytical [22] and numerical methods [21,23,24] have been adopted.…”
Section: Introductionmentioning
confidence: 99%
“…Furthermore, literature covers different fluids, like gas, liquid, non-Newtonian fluids, and, recently, nanofluids [14,20,21]. An experimental approach [4,17] or analytical [22] and numerical methods [21,23,24] have been adopted. Shah and London [25] performed a huge and exhaustive review about theoretical and experimental analyses on laminar forced convection and heat transfer in noncircular ducts.…”
Section: Introductionmentioning
confidence: 99%
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