Sv. Zhluktov et al., A THERMALLY NONEQUILIBRIUM VISCOUS SHOCK LAYER PAST SLENDER BLUNTED CONES, Journal of applied mathematics and mechanics, 58(3), 1994, pp. 493-505
Physical-chemical processes in a shock layer past a slender sphericall
y blunted body at high supersonic velocities are investigated. Using a
gas-dynamic model, defined by the complete viscous shock-layer equati
ons [1], the steady laminar axisymmetric flow of viscous, hear-conduct
ing, partially dissociated and ionized air under chemical and thermal
non-equilibrium is considered throughout the region between the body a
nd the required thin shock wave. Attention is concentrated on the non-
equilibrium chemical, ionization, and relaxation kinetics at large dis
tances from the leading stagnation point. Multicomponent diffusion and
the reverse influence of dissociation-recombination on the relaxation
of vibrational quantum states, i.e, coupling vibration-dissociation-v
ibration (CVDV), are taken into account. A new model is used to descri
be dissociation-relaxation process [2]. The model includes the effect
of non-equilibrium excitation of vibrations and the equilibrium excita
tion of rotational molecular modes on the dissociation rate constants.
Comparisons with experimentally verified calculations and calculation
s within the scope of the chemically equilibrium full viscous shock-la
yer model indicate that the model is physically adequate. The calculat
ions highlighted physical effects in the non-equilibrium viscous shock
layer past a slender spherically blunted cone at various distances fr
om the stagnation point.