TY - JOUR T1 - Numerical study of effective techniques to increase mixed convection heat transfer rate within the enclosure subjected to magnetic field TT - مطالعه عددی روش های موثر جهت افزایش انتقال حرارت در حالت ترکیبی درون حفره تحت تاثیر میدان مغناطیسی JF - mdrsjrns JO - mdrsjrns VL - 14 IS - 3 UR - http://mme.modares.ac.ir/article-15-7393-en.html Y1 - 2014 SP - 69 EP - 77 KW - Mixed convection heat transfer KW - Magnetic Field KW - nanofluid KW - Enclosure KW - Nusselt number N2 - In this research, two effective techniques to increase mixed convection heat transfer rate within an enclosure subjected to a transverse magnetic field are studied. In order to increase the heat transfer rate, the addition of Al2O3 nanoparticles is concerned as the first strategy and the change in magnetic field inclination angle is considered as the second. In this study, the left and right sides of the enclosure are kept at constant temperature while the top and bottom walls are adiabatic. In this work, the results are obtained with an in-house finite volume code. To validate the code, the results of the present code are compared to that of an existing correlation as well as those of previous works and good agreements are observed. In the present work, Richardson number varies from Ri=0.05 to Ri=50. Results show that the addition of solid particles may increase or decrease the heat transfer rate whereas the increase in magnetic field inclination angle mostly leads to increase in the heat transfer rate. M3 ER -