Table 4: represents the variation of the axial pressure gradient pa,z for various values of the Hartmann and Reynolds numbers, for Grashof number Gr=0, and κ=0.2. As the Hartmann number increases the absolute value of the axial pressure gradient highly increases, due to the effect of the opposite direction of the Lorentz force on the direction of the flow.
c ¯ fi
Re
Ha 100 1000 2000
0 13,77 13,65 13,54
10 13,78 13,68 13,60
20 13,82 13,72 13,64
50 34,85 34,85 32,52
100 64,56 80,39 81,67
200 102,25 131,37 138,51
500 217,70 246,58 259,38
1000 404,47 423,99 446,10
2000 722,25 757,11 763,76
c ¯ fo
Re
Ha 100 1000 2000
0 10,86 10,73 10,61
10 10,87 10,76 10,67
20 10,90 10,80 10,72
50 35,05 30,68 28,09
100 83,79 82,76 79,67
200 164,98 173,12 173,48
500 335,57 355,98 339,26
1000 635,65 658,30 657,13
2000 1172,11 1213,88 1215,32