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ISSN Online: 2379-1748

ISBN Flash Drive: 978-1-56700-483-0

ISBN Online: 978-1-56700-482-3

4th Thermal and Fluids Engineering Conference
April, 14–17, 2019 , Las Vegas, NV, USA

MATHEMATICAL STUDY OF CONVECTION HEAT TRANSFER UTILIZING SWCNT-WATER NANOFLUID INSIDE PARTIALLY HEATED HEXAGON CAVITY

Get access (open in a dialog) pages 1043-1050
DOI: 10.1615/TFEC2019.fnd.027590

Abstract

The purpose of present paper is to carry out numerical study of convection heat transfer characteristics inside the partially heated hexagon cavity. The bottom wall is maintained at comparatively hot temperature as compared to side walls, while the top wall is kept adiabatic. Cylinder of varying thermal condition is placed at the center of cavity. The cavity is filled with water based Single Wall Carbon Nanotubes (SWCNT-water) nanofluid. The governing equations of the proposed model consists of conservation of mass, momentum and energy equations along with associated boundary conditions. These governing partial differential equations are firstly transformed into nondimensional form using suitable transformation variables before being solved numerically using Finite Element Method (FEM). Non-uniform triangular mesh is used for space discretization. The simulation is performed for the range of emerging physical parameters, such as, Rayleigh number, nanoparticle volume fraction, and three types of cylindrical obstacles (cold, adiabatic, and hot). Streamlines and isotherms are plotted to demonstrate the flow and temperature fields under the effects of physical parameters. Variation in heat transfer rate is shown through the graphs of Nusselt number.