%0 Journal Article %A Bahlaoui, Ahmed %A Raji, Abdelghani %A Hasnaoui, Mohammed %A Naimi, Mohamed %D 2014 %I Begell House %K Mixed convection, nanofluid, suction, injection, vented cavity, numerical study %N 2 %P 129-142 %R 10.1615/ComputThermalScien.2014010294 %T MIXED CONVECTION IN A NANOFLUID-FILLED VENTED RECTANGULAR CAVITY: SUCTION AND INJECTION HEAT PERFORMANCE %U https://www.dl.begellhouse.com/journals/648192910890cd0e,7fa55e471724fdbd,1c290cc13897bb53.html %V 6 %X In this paper, we examine mixed convection in a horizontal ventilated enclosure filled with water−Al2O3 nanofluid. The mixed convection effect is attained by heating the bottom wall at a constant hot temperature and cooling the cavity through an injected or sucked imposed flow. The flow enters the enclosure through an opening located in the lower part of the left vertical wall and leaves from the upper part of the right vertical wall. The remaining boundaries are considered adiabatic. The effects of some pertinent parameters such as the Reynolds number, 200 ≤ Re ≤ 5000, and the solid volume fraction of the nanoparticles, 0 ≤ φ ≤ 0.1, on flow and thermal fields and the resulting heat transfer are examined for the two ventilation modes (injection and suction). The obtained results show that the presence of nanoparticles contributes to enhancement of the heat transfer and an increase in the mean temperature within the cavity. In addition, the Reynolds number and the mode of imposed external flow affect the dynamical and thermal flow structures. Also, it was found that the fluid suction mode favors the heat transfer in comparison with the case of the fluid injection mode. %8 2014-06-18