The performance evaluation of Al2O3/water nanofluid flow and heat transfer in microchannel heat sink |
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| Authors: | Dorin Lelea |
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| Affiliation: | 1. Department of Chemical Engineering, College of Chemical Engineering, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran;2. Computational Fluid Dynamic (CFD) Research Laboratory, School of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran 16846, Iran;1. Faculty of Mechanical Engineering and Mechatronics, University Politehnica of Bucharest, Splaiul Independentei nr. 313, sector 6, Bucuresti, Romania;2. Department of Chemical Engineering, Faculty of Science and Engineering, Curtin University, 6102 Bentley, Australia;3. Department of Mechanical and Manufacturing Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia |
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| Abstract: | The numerical modeling of the conjugate heat transfer and fluid flow of Al2O3/water nanofluid through the microchannel heat sink is presented in the paper. The laminar flow regime was considered along with viscous dissipation effect. The microchannel heat sink with square microchannels and Dh = 50 μm is considered. The heat flux was fixed to q = 35 W/m2 with heating and cooling cases. The water based Al2O3 nanofluid was encountered with various volume concentrations of Al2O3 particles and three diameters of the particle dp = 13, 28 and 47 nm. The analysis is performed on the results obtained for the local heat transfer coefficients based on a fixed pumping power. The results reveal a different local heat transfer behavior compared to the analysis made on a basis of the constant Re. |
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