Numerical Prediction of Forced Convective Heat Transfer and Friction Factor of Turbulent Nanofluid Flow through Straight Channels

Abstract

A numerical analysis has been implemented applying on turbulent forced convection flow of water inside a horizontal circular channel with a constant heatflux applied to the wall. Nusselt number and friction factor have been tested for Reynolds number, Re= 5000to 20000. Results present that the heat transfer rate increases as the Reynolds number increase. On the other hand, the friction factor increase when the Reynolds number decrease.
Finally, results of the average Nusselt number and frictional factor for pure fluid (water) have been verified and validated with experimental results as well as with available correlations where a logical good agreement has been fulfilled.