Numerical Investigation on Laminar Forced Convection of Various Nanofluids Flow in Sudden Expansion Channels under Constant Heat Flux
Engin Gedik Cuneyt Uysal Ozan Gülser Hüseyin Kurt
AbstractIn the present work, forced convection heat transfer were investigated numerically for the fully developed fluid flow of incompressible viscous laminar flow (Re=50-500) under the constant wall heat flux in sudden expansion channels. Various fluids were used with different concentration of nanoparticle such as TiO2, ZnO and SiO2. These nanoparticles were dispersed with the range of 0.5-2% volume concentrations in pure water to form stable suspensions of nanofluids. The flow assumed to be uniform in the channel inlet and numerical computations were performed for the fully developed laminar flow conditions. ANSYS Fluent15.0 code, commercially available software based on finite volume approach was used to calculate the governing continuity, momentum and energy equations. Obtained results from numerical study was plotted graphically and discussed in detail. Effect of nanoparticle volume fraction and Reynolds number on the convective heat transfer, Nusselt number, pressure drop and Darcy friction factor were determined.