Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
NEW EMPIRICAL CORRELATIONS FOR PREDICTING THE THERMAL CONDUCTIVITY AND VISCOSITY OF NANOFLUIDS Al2O3/WATER
Submission Author:
Anderson Antonio Ubices de Moraes , SP , Brazil
Co-Authors:
Anderson Antonio Ubices de Moraes, Gustavo Wink, Tiago Augusto Moreira
Presenter: Anderson Antonio Ubices de Moraes
doi://10.26678/ABCM.ENCIT2018.CIT18-0655
Abstract
This work concerns the development of empirical correlations to predict the thermal conductivity and dynamic viscosity of nanofluids composed of Al2O3/water by the teory of Vaschy-Bckingham. The database used in this work has 264 results for the thermal conductivity and 258 for the viscosity, with volumetric concentrations up to 2%, nanoparticles diameters varying from 10 to 235 nm and fluid temperatures ranging from 10 to 90°C. The correlations proposed in this work predicted the database with a mean error of 2.94% for the thermal conductivity and 6.14% for the viscosity. The new correlation for thermal conductivity predicted the database with a mean error of 2,94% and 90% of them are correlated within a mean deviation of ±5%. To viscosity, a correlation proposed in this work predicted the database with a mean error of 6,14% and more than 90% of them are correlated within a mean deviation of ±15%.
Keywords
Nanofluid, correlation, thermal conductivity, viscosity
