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. 2021 Oct 12;11:20262. doi: 10.1038/s41598-021-99800-0

Table 5.

Nomenclature.

Nomenclature
u, v x and r components of velocity (ms−1) Greek symbol
T Fluid temperature (K) ϕ1, ϕ2 Nanoparticles volume fraction
Tw Wall temperature (K) ρ Fluid density (kgm−3)
T Ambient temperature (K) Ψ Stream function
B0 Strength of magnetic field μ Dynamic viscosity (kgm−1 s−1)
B Radius of the cylinder (m) υ Kinematic viscosity (m2 s−1)
Uw Stretching velocity (ms−1) σ Electric conductivity (Ω−1 m−1)
σ Stefan-Boltzmann constant (Wm−2 K−4) cp Specific heat (Jkg−1 K)
k Mean absorption coefficient κ Thermal conductivity (Wm−1 K−1)
X* Space dependent heat Subscript
Y* Time dependent heat f Base fluid
qr Radiative heat flux (Wm−2) nf Nanofluid
qʺʹ Non-uniform heat flux hnf Hybrid Nanofluid
M Magnetic field parameter s1 First solid nanoparticle
Pr Prandtl number s2 Second solid nanoparticle
Rd Radiation parameter
β Slip parameter
γ Curvature parameter