Journal
EUROPEAN JOURNAL OF MECHANICS B-FLUIDS
Volume 29, Issue 6, Pages 472-482Publisher
ELSEVIER
DOI: 10.1016/j.euromechflu.2010.06.008
Keywords
Lid-driven enclosure; Mixed convection; Nanofluids; Heat transfer enhancement
Categories
Funding
- Arab Fund
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This work is focused on the numerical modeling of steady laminar mixed convection flow in a lid-driven inclined square enclosure filled with water-Al2O3 nanofluid. The left and right walls of the enclosure are kept insulated while the bottom and top walls are maintained at constant temperatures with the top surface being the hot wall and moving at a constant speed. The developed equations are given in terms of the stream function-vorticity formulation and are non-dimensionalized and then solved numerically subject to appropriate boundary conditions by a second-order accurate finite-volume method. Comparisons with previously published work are performed and found to be in good agreement. A parametric study is conducted and a set of graphical results is presented and discussed to illustrate the effects of the presence of nanoparticles and enclosure inclination angle on the flow and heat transfer characteristics. It is found that significant heat transfer enhancement can be obtained due to the presence of nanoparticles and that this is accentuated by inclination of the enclosure at moderate and large Richardson numbers. (c) 2010 Elsevier Masson SAS. All rights reserved.
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