A NUMERICAL INVESTIGATION ON THE EFFECT OF SCILLATING PIPE ON NANOPARTICLE SUSPENSIONS BEHAVIOUR: THERMAL AND FLOW

Abstract

In this study, numerical investigation is carried out on the laminar convective heat transfer for water based TiO2 nanoparticle suspensions flow through an oscillating pipe subjected to constant heat flux. The numerical model is carried out by applying the two-phase (Eulerian-Lagrangian discrete phase) flow model which is one of the accurate methods for the observation of the interaction between the dispersed nanoparticles and the base fluid. The Reynolds number and nanoparticles volume fraction are in the ranges of (Re= 500-2000) and (Ø=0.1-0.5 vol. %). Friction factor and pressure drop along the oscillating pipe are investigated. Also, the thermal performance is examined in the terms of average Nusselt number and average heat transfer coefficient. The results show the effect of oscillating pipe on the flow parameters and thermal performance. Also, it can be observed that there is a significant effect of the nanoparticles on the heat transfer enhancement, taking into the consideration the required pumping power. The obtained Average nusselt number results are compared with others from litreture.