Conditions for significant gasdynamically induced vibration-recombination coupling
The kinetics of coupled atomic recombination and vibrational de-excitation is considered in a continuously expanding gas flow. A conventional steady-state analysis is used to describe the initial departure from equilibrium, but is shown to break down thereafter, as nonstationary effects become predo...
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| Published in | Symposium, International, on Combustion Vol. 11; no. 1; pp. 23 - 36 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier Inc
1967
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| Online Access | Get full text |
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| Summary: | The kinetics of coupled atomic recombination and vibrational de-excitation is considered in a continuously expanding gas flow. A conventional steady-state analysis is used to describe the initial departure from equilibrium, but is shown to break down thereafter, as nonstationary effects become predominant. Highlynon-Boltzmann distributions of vibrational energy are predicted in the downstream nearly frozen flow. The frozen vibrational energy per molecule may be greatly increased, due to overpopulation of the highly anharmonic upper vibrational energy levels. Nonsteady coupling effects also tend to decrease the apparent three-body recombination rate constant for the production of ground-state molecules, but this effect does not appear to be large within the range of conditions presently accessible to experiment. |
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| ISSN: | 0082-0784 |
| DOI: | 10.1016/S0082-0784(67)80131-0 |