Mixed Convection Heat Transfer for Nanofluids in a Lid-Driven Shallow Rectangular Cavity Uniformly Heated and Cooled from the Vertical Sides: The Cooperative Case. (14th November 2012)

• Record Type: Journal Article
• Authors: Elharfi, Hassan; Naïmi, Mohamed; Lamsaadi, Mohamed; Raji, Abdelghani; Hasnaoui, Mohammed
• Other Names: Abergel R. J. Academic Editor.; Manciu M. Academic Editor.; Yulin S. Academic Editor.
• Is Part Of: ISRN thermodynamics. Volume 2012(2012)
• Publication Date: 2012-11-14
• Subjects: Thermodynamics -- Periodicals; Thermodynamics; Periodicals; Electronic journals; 536.7
• DOI: 10.5402/2012/373202
• Languages: English
• ISSNs: 2090-5203

Abstract

Abstract : A study of mixed convection, in a shallow lid-driven rectangular cavity filled with water-based nanofluids and subjected to uniform heat flux along the vertical side walls, has been performed numerically by solving the full governing equations via the finite volume method and the SIMPLER algorithm. In the limit of a shallow enclosure, these equations have been considerably reduced by using the parallel flow approximation. Solutions, for the flow and temperature fields, and the heat transfer rate, have been obtained as functions of the governing parameters, namely, the Reynolds (Re) and the Richardson (Ri) numbers and the solid volume fraction of nanoparticles (Φ). A good agreement has been obtained between the results of the two approaches for a wide range of the governing parameters. Moreover, it has been found that the addition of Cu-nanoparticles, into the pure water, leads to an enhancement or a degradation of heat transfer depending on the values of Re and Ri.