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. 2022 Jan 12;13(1):116. doi: 10.3390/mi13010116
List of variables Description S.I. Units
a Constants s−1
B0 Strength of uniform magnetic field Tesla
Bi Biot number −
b Constant s−1
CP Specific heat at constant Pressure Jkg−1K−1
d & c Stretching/shrinking parameter along x and y axis −
Da−1 Inverse Darcy number −
f Non dimensional transverse velocity −
g Non dimensional velocity −
fη Non dimensional Tangential velocity −
k Material constant W/mK
h Heat transfer coefficient −
k Material constant W/mK
k* Coefficient of mean absorption m−2
K Permeability of porous medium m2
L Coefficient of first order slip −
l Characteristic length −
M Hartman number −
Pr Prandtl number −
qr Radiative heat flux −
qw Local heat flux Wm−2
R Radiation parameter −
Vc Mass transpiration −
T∞ Far field temperature K
Tw Wall temperature K
T Temperature K
u,v,w Velocities along x, y, and z direction, respectively ms−1
x,y,z Cartesian coordinates m
w0 Wall transpiration ms−1
Greek symbols
β Dimensionless viscoelastic parameter −
λ Solution domain −
η Similarity variable −
γ Porosity parameter −
γ0 Porosity −
μ Dynamic viscosity m−1s−1
ν Kinematic viscosity m2s−1
κ Thermal conductivity Wm−1K−1
ρ Fluid density kgm−3
θ Dimensionless temperature −
σ Electric conductivity Sm−1
σ* Stefan–Boltzmann constant Wm−2K−4
Γa,z Incomplete gamma function −
Γ Special constant used in the problem −
Subscripts
w Wall condition −
∞ Free stream condition −
η Differentiation with respect to η −
Abbreviations
MHD Magneto hydrodynamics −
ODEs Ordinary differential equations −
PDEs Partial differential equations −