شماره ركورد كنفرانس :
4518
عنوان مقاله :
A CFD study on the convective heat transfer of Al2O3/Water nanofluids under laminar flow regime
Author/Authors :
Ahmad Azari Department of Chemical Engineering -Amirkabir University of Technology (Tehran Polytechnic) - Mahshahr Branch , Mansour Kalbasi Department of Chemical Engineering -Amirkabir University of Technology (Tehran Polytechnic) - Mahshahr Branch , Masoud Rahimi Research Center Chemical Engineering Department - Razi University, Kermanshah
كليدواژه :
Nanofluids , Nusselt number , heat transfer coefficient , single-phase model , constant and variable property
عنوان كنفرانس :
The 7th International Chemical Engineering Congress & Exhibition (IChEC 2011
چكيده لاتين :
This paper reports Computational Fluid Dynamics (CFD) investigations on the Nusselt number
and heat transfer performance of Al2O3/Water nanofluids under laminar flow condition in circular
tube submitted to a constant and uniform heat flux at the wall. A single-phase model is employed
with either constant or temperature dependent properties. The investigation is accomplished for
size particles equal to 50 nm. Convective heat transfer coefficient for nanofluids is greater than
that of the base liquid and heat transfer enhancement increases with the particle volume
concentration. Higher heat transfer coefficients are detected in the case of temperature dependents
model and the heat transfer always improves, as Reynolds number increases. Moreover a
comparison with the experimental data present in the literature is carried out and good conformity
between the model predictions and the experimental data is achived.
