“…Under these considerations, the related expressions are: 43–48 ![]()
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with
in which ( u , v ) represent velocity components, μ hnf the dynamic viscosity, σ hnf the electrical conductivity, ( x , r ) the cylindrical coordinates,
the inertia coefficient, ρ hnf the density, k p the porous space permeability, v hnf the kinematic viscosity, C b the drag force coefficient, T the temperature, ( C p ) hnf specific heat, Q 0 > 0 the heat generation coefficient, σ * Stefan Boltzmann constant,
thermal diffusivity, k * mean absorption coefficient, k hnf the thermal conductivity, δ E the thermal relaxation time, T w the wall temperature, u 0 the reference velocity, and T ∞ the ambient temperature.…”