TY  - EJOU
AU  - Kolsi, Lioua 

TI  - MHD MIXED CONVECTION AND ENTROPY GENERATION IN A 3D  LID-DRIVEN CAVITY
T2  - Frontiers in Heat and Mass Transfer

PY  - 2016
VL  - 7
IS  - 1
SN  - 2151-8629

AB  - In this study, the effects of Richardson and Hartmann numbers on heat and mass transfer in a three-dimensional lid-driven cubical cavity subjected to 
a uniform magnetic field are investigated numerically. The lid is maintained at constant high temperature and is moving downwards in the negative 
y-direction. The wall opposite to the lid is stationary and maintained at constant low temperature, and all other walls are kept adiabatic. Entropy 
generation is also calculated to investigate the nature of irreversibility in heat transfer inside the cavity. The computations are performed for the 
Richardson numbers 10 and 100, and Hartmann number in the range between 0 and 80. Prandtl number and the irreversibility coefficient are 
considered constant and given the values 0.054 and 10<sup>-4</sup>, respectively. It was found out that the average Nusselt number decreases when the 
Hartmann number increases for all values of the Richardson number. Also, the Bejan and average Nusselt numbers have a converse relationship for 
the same range of Hartmann and Richardson numbers. In addition, the study shows that for all the considered cases, the entropy generation rate 
decreases with increasing the Hartmann number.
KW  - <i>Magneto-hydrodynamic
KW  -  Lid-driven cavity
KW  -  Three-dimensional flow
KW  -  Entropy generation</i>

DO  - 10.5098/hmt.7.26