Greek symbols
\(\beta\) Thermal relaxation number \(\nu\) Kinematic viscosity
\(\mu\) Fluid viscosity \(\rho_{p}\) Nanoparticle mass density
\(S\) Dimensionless nanoparticle volume fraction   ηSimilarity variable
\(\theta\) Dimensionless \(\sigma\) Electrical conductivity
\(\lambda_{1}\) Fluid relaxation time \(\lambda_{2}\) Thermal relaxation time