Comparing single vs. two-phase models for Al2O3-H2O nanofluid in minichannels

Résumé fourni par la source

CFD predictions of a steady laminar forced convective heat transfer of a nanofluid AL2O3-water mixture in a horizontal 2D minichannel were studied numerically. The governing equations for the classical Newtonian nanofluid and the approach founded on the two-phase models had been numerically solved using Fluent CFD software. The impacts of the Nusselt number, volume concentration, coefficient of heat transfer, wall temperature, pressure drop, and hydrodynamic flow were studied via single-phase fluid and two-phase (Eulerian, mixture) models. A numerical process comparison with available numerical and experimental data was done to ensure the validity and reliability of the models, where a satisfactory agreement was found. Heat transfer efficiency raises as the nanoparticle volume concentration and Reynolds number rise, and the results of two-phase modelling demonstrate a larger enhancement of heat transfer compared to those from a single-phase model.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.