Thermal conductivity variation on natural convection flow of water–alumina nanofluid in an annulus

• Published in: International journal of heat and mass transfer Vol. 55; no. 19-20; pp. 5268 - 5274
• Main Authors: Parvin, Salma, Nasrin, Rehena, Alim, M.A., Hossain, N.F., Chamkha, Ali J.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.09.2012; Elsevier
• Subjects: Annulus; Applied sciences; Chemistry; Colloidal state and disperse state; Condensed matter: structure, mechanical and thermal properties; Convection and heat transfer; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Fluid dynamics; Fundamental areas of phenomenology (including applications); General and physical chemistry; Heat flux; Heat transfer; Heat transfer enhancement; Nanofluid; Natural convection; Physical and chemical studies. Granulometry. Electrokinetic phenomena; Physics; Theoretical studies. Data and constants. Metering; Thermal properties of condensed matter; Thermal properties of small particles, nanocrystals, nanotubes; Turbulent flows, convection, and heat transfer; Heat transfer enhancement; Annulus; Natural convection; Nanofluid; Heat flux; Water; Aluminium oxide; Temperature distribution; Annular space; Nanoparticle; Heat flow; Boundary condition; Modeling; Finite element method; Laminar flow; Thermal conductivity; Numerical simulation; Stream line; Heat transfer

This work is focused on the numerical modeling of steady laminar natural convection flow in an annulus filled with water–alumina nanofluid. The inner surface of the annulus is heated uniformly by a uniform heat flux q and the outer boundary is kept at a constant temperature Tc. Two thermal conductiv...