Effect of inside heated cylinder on the natural convection heat transfer of nanofluids in a wavy-wall enclosure. (December 2016)

• Record Type: Journal Article
• Authors: Hatami, M.; Safari, H.
• Is Part Of: International journal of heat and mass transfer. Volume 103(2016:Dec.)
• Page Start: 1053
• Page End: 1057
• Publication Date: 2016-12
• Subjects: Wavy-wall cavity -- Heated cylinder -- Nusselt number -- FEM -- Nanofluid; Heat -- Transmission -- Periodicals; Mass transfer -- Periodicals; Chaleur -- Transmission -- Périodiques; Transfert de masse -- Périodiques; Electronic journals; 621.4022
• DOI: 10.1016/j.ijheatmasstransfer.2016.08.029
• Languages: English
• ISSNs: 0017-9310

Abstract

Highlights: Natural convection heat transfer of nanofluids in a wavy-wall enclosure is studied. Finite element method (FEM) has been employed to solve the governing equations. A heated cylinder is located in the cavity. Effects of center location for cylinder on the Nusselt numbers are investigated. Abstract: In this study, natural convection heat transfer of nanofluids in a wavy-wall enclosure is studied while a heated cylinder is located inside the cavity. The governing equations for a simple cavity are studied based on the previous work and changed it to complicated two-phase nanofluid and solved by finite element method (FEM). Because the location on inside cylinder has a significant effect on the heat transfer and Nusselt number, it is important to find the best location for this cylinder. In our study the cylinder is movable in X and Y directions which affects the temperatures, stream lines and nanoparticles concentration contours. The results indicate that center location for the cylinder assists the heat transfer in both wavy side walls.