Nomenclature | Greek Symbols | ||
a | Constant | Magnetic parameter | |
Bi | Biot number | Dimensionless similarity variable | |
cf | Skin friction coefficient | Nanoparticles volume fraction | |
Ec | Eckert number | Thermal conductivity | |
H 0 | Uniform magnetic field | Density | |
h | Convective heat transfer coefficient | Heat capacity | |
k | Mean absorption coefficient | Magnetic permeability | |
Nu | Nusselt number | Magnetic diffusivity | |
Pr | Prandtl number | μ | Dynamic viscosity |
qr | Radiative heat flux | Kinematic viscosity | |
qw | Heat transfer at wall | σ | Stefan-Boltzmann constant |
R | Radiation parameter | θ | Dimensionless temperature |
Re | Reynolds number | Wall shear stress | |
s | Nanoparticles shape factor | ε | Temperature ratio parameter |
T | Fluid temperature | Subscripts | |
Tw | Surface temperature | hnf | Hybrid nanofluid |
T∞ | Ambient temperature | f | Base fluid |
u, w | Velocity components in r-, z- directions. | w | Surface condition |
Uw | Stretching velocity | ∞ | Ambient condition |
U∞ | Ambient velocity | s1,s2 | Shape factors of Copper and Alumina |