CFD Study of the Turbulent Forced Convective Heat Transfer of Non-Newtonian Nanofluid

Moraveji, M.; Beheshti, A.R.

CFD Study of the Turbulent Forced Convective Heat Transfer of Non-Newtonian Nanofluid

Document Type : Research note

Authors

M. Moraveji ¹

A.R. Beheshti ²

¹ Chemical Engineering Department, Amirkabir University of Technology, Tehran, Iran

² Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran

Abstract

In this study, forced convection heat transfer of non-Newtonian nanofluids in a horizontal tube with constant wall temperature under turbulent flow conditions was investigated using computational fluid dynamics tools. For this purpose, non-Newtonian nanofluids containing three types of nanoparticles (Al2O 3, TiO 2 and CuO) with carboxymethylcellulose aqueous solution as a liquid single phase with three average particle sizes of 10, 25 and 40 nm nanofluids were investigated. Effects of nanoparticle type and Peclet number on the convective heat transfer coefficient were investigated in fully turbulent region of a horizontal tube. A correlated equation was obtained for Nusselt number using the dimensionless numbers by applying the simulation results. Results showed that the correlated data were in very good agreement with the experimental ones obtained from the literature. The maximum error was 12%.

Keywords

Nanofluid

Non-Newtonian

Turbulent

Convective Heat Transfer

CFD