Table 2.

Numerical outputs of Nusselt number $-{\mathrm{\Theta }}^{\prime }\left(0\right)$ at the surface of disc.

$Pr$	$\begin{array}{c}-{\mathrm{\Theta }}^{\prime }(0)Ag\\ {\varphi }_{\mathit{Ag}}=0.02\\ \end{array}$	$\begin{array}{c}-{\mathrm{\Theta }}^{\prime }(0)Ag\\ {\varphi }_{\mathit{Ag}}=0.04\\ \end{array}$	$\begin{array}{c}-{\mathrm{\Theta }}^{\prime }(0)Ag+MgO\\ {\varphi }_{\mathit{Ag}}={\varphi }_{\mathit{MgO}}=0.02\\ \end{array}$	$\begin{array}{c}-{\mathrm{\Theta }}^{\prime }(0)Ag+MgO\\ {\varphi }_{\mathit{Ag}}={\varphi }_{\mathit{MgO}}=0.04\\ \end{array}$
6.4	0.976487	0.979312	0.976945	0.981377
6.5	0.975697	0.979587	0.976274	0.979668
6.6	0.974928	0.978862	0.975492	0.969958