Effects of inclination angle on natural convection in enclosures filled with Cu–water nanofluid |
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Authors: | Eiyad Abu-Nada Hakan F Oztop |
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Institution: | aDepartment of Mechanical Engineering, Hashemite University, Zarqa 13115, Jordan;bDepartment of Mechanical Engineering, Fırat University, Elazig TR-23119, Turkey |
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Abstract: | Effects of inclination angle on natural convection heat transfer and fluid flow in a two-dimensional enclosure filled with Cu-nanofluid has been analyzed numerically. The performance of nanofluids is tested inside an enclosure by taking into account the solid particle dispersion. The angle of inclination is used as a control parameter for flow and heat transfer. It was varied from = 0° to = 120°. The governing equations are solved with finite-volume technique for the range of Rayleigh numbers as 103 Ra 105. It is found that the effect of nanoparticles concentration on Nusselt number is more pronounced at low volume fraction than at high volume fraction. Inclination angle can be a control parameter for nanofluid filled enclosure. Percentage of heat transfer enhancement using nanoparticles decreases for higher Rayleigh numbers. |
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Keywords: | Nanofluids Enclosure Natural convection Inclination angle |
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