Table 9 Sensitivity of \({Re}_{x}^{-1/2}{Nu}_{x}\) with response variables setting \({D}_{f}=0\).

From: Statistical analysis for heat transfer optimization of magnetohydrodynamics trihybrid nanofluid over a convectively heated Riga surface

\(\phi\)

\(Nr\)

\(\frac{\partial \left({Re}_{x}^{-1/2}{Nu}_{x}\right)}{\partial {D}_{f}}\)

\(\frac{\partial \left({Re}_{x}^{-1/2}{Nu}_{x}\right)}{\partial \phi }\)

\(\frac{\partial \left({Re}_{x}^{-1/2}{Nu}_{x}\right)}{\partial Nr}\)

\(-1\)

\(-1\)

\(-\) 0.6545

0.8487

0.2289

 

0

\(-\) 0.5830

0.9534

0.8789

 

1

\(-\) 0.4535

0.6443

0.4482

0

\(-1\)

0.6784

0.7648

0.5623

 

0

0.9830

0.9345

0.9345

 

1

0.6982

0.6904

0.8794

1

\(-1\)

0.7954

0.8943

\(-\) 0.8434

 

0

0.8430

0.8909

\(-\) 0.2704

 

1

0.5463

0.8429

\(-\) 0.9070