Thermal dissociation of anharmonic oscillators in a boundary layer
A study was made to evaluate how the vibration anharmonicity, when taken into account in the expression for the macroscopic dissociation rate, modifies the correction for the motion of the gas. It was assumed that diatomic molecules, Morse anharmonic oscillators, constitute a small impurity in a monoatomic inert gas. It is shown that in the case of harmonic oscillators the motion of the gas in the nonisothermal boundary layer leads to the repopulation of the higher oscillatory levels of the anharmonic oscillators. The diffusion approximation obtained led to a solution which gives an effect of the motion on the reaction rate weaker than that given by the numerical solution. A nitrogen-argon mixture was used to illustrate the results.
- OSTI ID:
- 6476506
- Journal Information:
- Fluid Dyn. (Engl. Transl.); (United States), Journal Name: Fluid Dyn. (Engl. Transl.); (United States) Vol. 22:5; ISSN FLDYA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
420300* -- Engineering-- Lasers-- (-1989)
ARGON
BOUNDARY LAYERS
COLLISIONS
DISSOCIATION
DISSOCIATION ENERGY
ELEMENTS
ENERGY
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EQUILIBRIUM
EXCITATION
EXCITED STATES
FLUIDS
GAS LASERS
GASES
HARMONIC OSCILLATOR MODELS
LASER MATERIALS
LASERS
LAYERS
LTE
MATERIALS
MATHEMATICAL MODELS
MOLECULES
NITROGEN
NONMETALS
PLANCK LAW
POPULATION INVERSION
RARE GASES
ROTATIONAL STATES
VIBRATIONAL STATES