Rayleigh-Bénard Convection of Non-Newtonian Power-Law Fluids with Temperature-Dependent Viscosity. (14th November 2012)

• Record Type: Journal Article
• Authors: Kaddiri, Mourad; Naïmi, Mohamed; Raji, Abdelghani; Hasnaoui, Mohammed
• Other Names: Aranovich G. L. Academic Editor.; Espeau P. Academic Editor.; Hirao H. 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: 10.5402/2012/614712
• Languages: English
• ISSNs: 2090-5203

Abstract

Abstract : Two-dimensional steady-state Rayleigh-Bénard convection of thermodependent power-law fluids confined in a square cavity, heated from the bottom and cooled on the top with uniform heat fluxes, has been conducted numerically using a finite difference technique. The effects of the governing parameters, which are the Pearson number( 0 ≤ m ≤ 10 ), the flow behaviour index( 0.6 ≤ n ≤ 1.4 ), and the Rayleigh number( 0 < R a ≤ 10 5 ), on the flow onset, flow structure, and heat transfer have been examined. The heatlines concept has been used to explain the heat transfer deterioration due to temperature-dependent viscosity effect that m expresses.