Sv. Zhluktov et al., NUMERICAL INVESTIGATION OF THERMAL AND CHEMICAL NONEQUILIBRIUM FLOWS PAST SLENDER BLUNTED CONES, Journal of thermophysics and heat transfer, 10(1), 1996, pp. 137-147
A steady laminar axisymmetric flow of viscous, heat conducting, nonequ
ilibrium, partially dissociated, and ionized air past a thin slender s
phere-cone is considered. The flowfield characteristics with the inter
play between reactions and vibrational relaxation taken into account a
re investigated, An ''adiabatic'' dissociation model accounting for bo
th nonequilibrium excitation of vibrational modes and equilibrium exci
tation of rotational modes of the air molecules is used to calculate t
hermal nonequilibrium dissociation rate constants, In the case of ther
mal equilibrium, the model yields a good agreement of dissociation con
stants with experimental data widely used in hypersonic calculations.
The combined effect of the multicomponent diffusion with real binary d
iffusion coefficients on the heat transfer rates has been evaluated, Q
uantitative assessments of the influence of thermal nonequilibrium on
the flow parameters have been obtained at various freestream condition
s, The influence of the body surface activity with respect to accommod
ation of vibrational energy on the heat transfer rate has been evaluat
ed.