RT Journal Article
ID 0be2b58f63465387
A1 Ragui, Karim 
A1 Benkahla, Youb Khaled
A1 Labsi, Nabila
A1 Boutra, Abdelkader 
T1 NATURAL CONVECTION HEAT TRANSFER IN A DIFFERENTIALLY HEATED ENCLOSURE WITH ADIABATIC PARTITIONS AND FILLED WITH A BINGHAM FLUID
JF Heat Transfer Research
JO HTR
YR 2015
FD 2015-08-04
VO 46
IS 8
SP 765
OP 783
K1 Bingham fluid
K1 natural convection
K1 centrally located partitions
K1 offset partitions
K1 finite volume method
AB The present numerical study deals with two-dimensional natural convection in a differentially heated square enclosure, with centrally located partitions and offset partitions. The cavity is considered to be completely filled with a yield fluid obeying the rheological model of Bingham. The governing equations were solved using a code based on the finite volume method. The code has been validated for both cases of a Newtonian and non-Newtonian fluid, after comparison between the present results and those given in the literature.<br>
In order to investigate the effect of a set of parameters, i.e., the partitions height and thickness, on heat and flow behaviors, the Prandtl number is taken equal to 20, the Rayleigh number is fixed at 10<sup>6</sup>, and the Bingham number covers the range from 0 to 20. The results show, on the one hand, that the average Nusselt number is a decreasing function of the Bingham number and that all parameters related to geometrical dimensions of partitions exert a crucial effect on the flow field and heat transfer, on the other hand. Moreover, it has been pointed out that the position of such partitions has an important effect on both fluid flow and heat transfer and that the partitions thickness enhanced heat transfer.
PB Begell House
LK https://www.dl.begellhouse.com/journals/46784ef93dddff27,3977649942d91f8c,0be2b58f63465387.html