National School of Applied Sciences, Ibn Zohr University, Agadir, BP 1136, Morocco
National School of Applied Sciences, Ibn Zohr University, laboratory of mechanics, energy and envirNational School of Applied Sciences, Ibn Zohr University, Agadir, BP 1136, Morocco
This paper consists on a three-dimensional numerical approach of natural convection in a cavity containing the nanofluid. The cavity contains an isothermal heating block in the middle of the bottom (case BH) and the top (case TH) walls and kept at a hot temperature TH. The right and the left vertical walls of the cavity are kept at a cold temperature Tc. The study's parameters are: the volume fraction Ф varying between 0 and 0.03, and the Rayleigh number . The considered nanofluid is water + Cu. The results illustrate that the Rayleigh number Ra and the volume fraction Ф have a positive effect and they also improve the heat transfer. Interesting results have also been found while comparing the two considered configurations.