Mixed convection flow in a lid-driven inclined square enclosure filled with a nanofluid

• Published in: European journal of mechanics, B, Fluids Vol. 29; no. 6; pp. 472 - 482
• Main Authors: Abu-Nada, Eiyad, Chamkha, Ali J.
• Format: Journal Article
• Language: English
• Published: Issy-les-Moulineaux Elsevier Masson SAS 01.12.2010; Elsevier Masson
• Subjects: Condensed matter: structure, mechanical and thermal properties; Convection and heat transfer; Enclosure; Exact sciences and technology; Fluid dynamics; Fundamental areas of phenomenology (including applications); Heat transfer; Heat transfer enhancement; Laminar flows; Laminar flows in cavities; Lid-driven enclosure; Mathematical models; Mixed convection; Nanocomposites; Nanofluids; Nanomaterials; Nanoparticles; Nanostructure; Physics; Thermal properties of condensed matter; Thermal properties of small particles, nanocrystals, nanotubes; Turbulent flows, convection, and heat transfer; Walls; Heat transfer enhancement; Mixed convection; Nanofluids; Lid-driven enclosure; Temperature distribution; Digital simulation; Velocity distribution; Cavity flow; Inclination; Finite volume methods; Moving wall; Combined convection; Nanoparticles; Laminar flow; Modelling; Square section; Heat transfer
• ISSN: 0997-7546; 1873-7390
• DOI: 10.1016/j.euromechflu.2010.06.008

This work is focused on the numerical modeling of steady laminar mixed convection flow in a lid-driven inclined square enclosure filled with water–Al 2O 3 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.