Table 4.

Percentage enhancement for different volume fraction of Fe₃O₄.

$\varphi ({\text{Fe}}_3{\text{O}}_4)$	$\alpha$	$\tau$	$Pr$	$\text{Re}$	$\mathit{Nu}$	Percentage
0.00	0.5	1	21	1.2	4.708	–
0.01	0.7	1	21	1.2	4.762	1.147
0.02	0.5	1.5	21	1.2	4.817	2.315
0.03	0.5	1	21	1.2	4.871	3.462
0.04	0.5	1	25	1.2	4.926	4.630