Numerical Investigation of Heat Transferred Enhancement in Nano-fluid Flow through Elastic Conduit Channel

Abstract

Heat transferred during fluid flow in conduit is a concern of design engineers. In this article, numerical models had been explored to investigate heat transferred within Nano-fluid in state of aqueous suspensions of 0.2% volume of Graphene-Oxide and water (GO/water) at constant heat flux. Numerical model captured geometrical and physical properties of uniform elastic pipe channel and fluid flow phenomena within the control volume. Nano-fluid was suspended with a view to enhancing the heat transfer rate and thermal performance. Constitutive equations of fluid flow with Navier-Stokes equations and energy equation for heat transfer were explored and solutions obtained numerically. Boundary temperatures were captured such that inlet temperature of 288 K and thermal boundary conditions were applied during investigation. Fill- ratio of 50%, 60%, 70%, 80%, 90%, 100% were considered at interval of 6 hrs. for 24 hrs. for heat loads of between 5W and 30W at intervals. With 0.20vol. % GO/water, Nano-fluids, maximum coefficient of heat transferred occurs at the highest heat load at 30W for 50% fill ratio and less heat-transfer coefficient at heating power of 10 W. This article therefore displays potential of numerical investigation in the analysis of thermal distribution within regular conduit.