Comparison of the present results of local Nusselt number –θ′(0) for the case of Newtonian fluid with the results of Khan and Pop [5], Wang [21] and Gorla and Sidawi [22].
When free convection is to be calculated for very thin wires in rarefied atmospheres, the Rayleigh number becomes very small. At these small Rayleigh numbers, available correlations are no longer appl
