  This paper provides a comparison between the vibrational-specific
state-to-state (StS) model for nitrogen plasma elaborated in Part I of this
work and conventional two-temperature (2-T) models for simulating inductively
coupled plasma (ICP) discharges under non-Local Thermodynamic Equilibrium
(NLTE) conditions. Simulations are performed within the multi-physics
computational framework established for ICP in Part I. Based on the findings of
Part I, the quasi-steady-state (QSS) assumption is validated in the plasma
core, thereby enabling the calculation of global rate coefficients under this
assumption. This facilitates the reduction of the StS model to a "consistent"
macroscopic 2-T model. Results from the StS model for nitrogen ICP torch
exhibit considerable discrepancies when compared against predictions from the
widely utilized Park 2-T model. On the contrary, the comparison between the
newly proposed 2-T model, consistently derived from the original vibronic StS
model, and the full StS results demonstrate excellent agreement in terms of
plasma core location, morphology, and peak temperature distributions. This
demonstrates the ability of the proposed 2-T model to capture the energy
transfer and reactive processes predicted by the comprehensive StS model.
Additionally, the study identifies the vibrational-translational (VT) energy
transfer term in the 2-T model as the predominant factor in dictating plasma
core morphology. This suggests a strong sensitivity of the ICP flow field to
heavy-impact vibrational excitations and dissociative events.
